PROMIS and FAAM Minimal Clinically Important Differences in Foot and Ankle Orthopedics

Effects of Travel Distance on Complications and Outcomes in Total Ankle Arthroplasty

Owing to the last decade's increase in the number of total ankle arthroplasty (TAA) procedures performed annually, there is a concern that the disproportionate distribution of orthopaedic surgeons who regularly perform TAA may impact complications and/or patient satisfaction. This study examines patient-reported outcomes and complications in TAA patients who had to travel for surgery compared to those treated locally. This is a single-center retrospective review of 160 patients undergoing primary TAA between January 2016 and December 2018, with mean age 65 (range: 59-71) years, mean body mass index (BMI) 28.7 kg/m2, 69 (43.1%) females, and mean 1.5 (SD = 0.51) years follow-up. Patients were grouped by distance traveled (<50 miles [n = 89] versus >50 miles traveled [n = 71]). There were no significant differences in rate or type of postoperative complications between the <50 mile group (16.9%) and the >50 mile group (22.5%) (P = .277). Similarly, there were no significant difference in postoperative PROMIS scores between the groups (P = .858). Given uneven distribution of high-volume surgeons performing TAA, this is important for patients who are deciding where to have their TAA surgery and for surgeons on how to counsel patients regarding risks when traveling longer distances for TAA care.Levels of Evidence: Level III: Retrospective Cohort Study.

Comparison of PROMIS scores after total hip and total ankle arthroplasty : a propensity score-matched study

Aims

This study evaluated joint-specific and generic patient-reported outcome measures (PROMs) after total hip arthroplasty (THA) and total ankle arthroplasty (TAA) in matched cohorts, while evaluating implant survivorship and 90-day hospital use.

Methods

Primary THA and TAA patients from 1 January 2015 to 1 January 2023 with minimum one-year follow-up were retrospectively reviewed. After applying exclusion criteria, 2,092 THAs and 478 TAAs were analyzed. Demographics, pre- and postoperative PROMs, revision surgeries, emergency department visits, and readmissions were collected. THA and TAA patients were then propensity score matched at a 2:1 ratio for age, sex, race, BMI, American Society of Anesthesiologists classification, and comorbidities, resulting in a final cohort of 844 THAs and 455 TAAs for comparison.

Results

Median preoperative Patient-Reported Outcomes Measurement Information System (PROMIS) pain interference (PI) scores between THA and TAA were calculated (66.0 (IQR 62.0 to 70.0) vs 65.0 (IQR 62.0 to 70.0); p = 0.276), and both showed improvement at six weeks. However, THA patients exhibited lower median PROMIS PI scores at one year (53.0 vs 54.0; p = 0.009), as well as a greater median decrease in PROMIS PI from preoperative to one year (-13.0 (IQR -20.0 to -8.0) vs -12.0 (IQR -18.0 to -7.0); p = 0.023). Median preoperative PROMIS physical function (PF) was worse in THA patients (36.0 (IQR 32.0 to 40.0) vs 37.0 (IQR 33.0 to 40.0); p = 0.031), but showed greater median improvement compared to TAA patients at both six weeks (7.0 (IQR 3.0 to 12.0) vs 3.0 (IQR -2.0 to 9.0); p < 0.001) and one year (11.0 (IQR 6.0 to 17.0) vs 8.0 (IQR 4.5 to 13.0); p < 0.001). Preoperative PROMIS depression scores were similar and improved similarly in both groups. Joint-specific PROMs improved in both cohorts.

Conclusion

Patients undergoing THA or TAA experienced improvements in joint-specific PROMs postoperatively which translated to improved generic PROMs across both joints. Generic PROMs can be a useful tool to compare outcomes in THA and TAA. Results suggest that higher functional scores may be achieved sooner in THA.

Functional outcomes following minimally invasive Achilles rupture repair: a retrospective comparative study of PARS and midsubstance speedbridge techniques

BACKGROUND

Prior studies have compared patient-reported outcomes between open repair and one of either the two minimally invasive techniques for Achilles tendon rupture: Percutaneous Achilles Repair System (PARS) and Midsubstance Speedbridge Implant System (MSB). However, no study has compared patient-reported outcomes measured by Patient Reported Outcomes Measurement Information System (PROMIS) physical function (PF) and PROMIS pain interference (PI) and the Achilles Tendon Total Rupture Score (ATRS) between PARS and MSB. Our study compared patient-reported outcomes measured by PROMIS and ATRS scores between PARS and MSB. We hypothesized that patient-reported outcomes would be similar between groups.

METHODS

This was a retrospective review of 434 patients who underwent Achilles rupture repair from 2018 to 2023 at a single institution. Tendinopathies, open injuries, concomitant fractures, tendon transfers, gastrocnemius recessions, and open repairs were excluded. A total of 316 patients met inclusion criteria and were contacted to complete a postoperative questionnaire containing PROMIS and ATRS. 119 (78 PARS and 41 MSB) completed all surveys and were included for final analysis. Wilcoxon rank-sum and Kruskal-Wallis tests were used to assess differences in mean scores. Chi-squared and Fisher's exact tests were used to compare incidence of complications. All tests were conducted at a significance level of α = 0.05.

RESULTS

Average follow-up was 30 months at time of survey completion. There were no significant differences in PROMIS PF, PROMIS PI, and ATRS measures between groups (p > 0.05). Mean PARS PROMIS PF, PROMIS PI, and ATRS were 58.8, 44.2, and 86.0, respectively. Mean MSB PROMIS PF, PROMIS PI, and ATRS were 55.3, 44.0, and 82.5, respectively. No significant differences existed in incidence of each postoperative complication between groups (p > 0.05).

CONCLUSION

In the largest study to compare patient-reported outcomes between PARS and MSB, outcomes were similar between both groups. Both techniques resulted in PROMIS PF greater than the population mean and PROMIS PI lower than the population mean. Each had similar ATRS scores. Overall, both MSB and PARS were safe and effective strategies for surgically managing Achilles ruptures.

Health economic evaluation of trans-tibial prosthetic suspension systems: a protocol for a pilot using an observational study and synthetic cohort

BACKGROUND

Health Economic Evaluations (HEEs) provide the necessary evidence of cost-benefit to inform policy and investment decisions. No HEEs have quantified the cost-benefit of passive suction (PS) vs vacuum assisted suction (VAS) suspension for trans-tibial prosthesis users. There are methodological challenges to conducting HEE in prosthetics given the benefit measures are not focused on the things most important to prosthesis users and funders, and the required time horizons are lengthy. To address these challenges, we propose a pilot study using two PROMIS instruments to measure benefits and trial the use of a Synthetic Cohort Method, to quantify the cost-effectiveness and cost-utility of PS and VAS suspension for people living with trans-tibial amputation.

METHODS

An observational study will measure the costs and benefits of PS and VAS suspension for trans-tibial prosthesis users using a Synthetic Cohort Method, a technique used in epidemiological modelling of life-time risks. Each intervention will include 3 sub-groups, representing prosthesis users in the first, second, or third year of the intervention since fitting. A prosthetic payor perspective will be taken, with data collected over a 1-year period and synthesised to reflect the costs and benefits over a 3-year time horizon. Benefits will be measured using two PROMIS instruments reported to best measure the benefits most important to prosthesis users and funders. Costs will be calculated from actual billable costs to the funder. Costs and benefits will be discounted at 4%. Cost-effectiveness and cost-utility will be calculated using the incremental costs and incremental benefits, with results presented as incremental cost-effectiveness and incremental cost-utility ratios. Bootstrapping will be undertaken to assess uncertainty, and discounting will be analysed through a one-way sensitivity analysis.

DISCUSSION

This pilot will make a novel contribution by trailing the use of a Synthetic Cohort Method to reduce the lengthy time horizons required in prosthetic HEE. The HEE will use a two-pronged approach whereby cost-utility and cost-effectiveness are simultaneously evaluated using the PROMIS instruments to inform a wide range of policy and investment decisions. Additionally, this pilot will be the first HEE of suction suspension systems for people with transtibial amputation and will therefore make an important contribution to the prosthetic evidence base.

Patients With Higher Resilience Report Greater Improvement in Global Physical Health and Pain Interference Following Foot and Ankle Surgery

BACKGROUND

Recovery from orthopaedic surgery requires a degree of physical and mental resilience. To date, there is limited evidence evaluating the use of resilience as a preoperative benchmark in foot and ankle orthopaedic procedures. This study aims to determine whether resilience, measured using the Brief Resilience Scale (BRS), is associated with improved patient-reported outcomes following foot and ankle surgery.

METHODS

Patients undergoing foot and ankle surgery at a single institution completed the BRS scale preoperatively and were categorized into low- (LR), average- (AR), and high-resilience (HR) groups based on standard deviation (SD). Patients also completed the PROMIS physical function (PF), PROMIS pain interference (PI), PROMIS depression, PROMIS global physical health (GPH) and global mental health (GMH), and a Single Assessment Numeric Evaluation (SANE) preoperatively and 24 months postoperatively. A total of 1180 patients had at least one 24-month outcome available and were included for analysisResults:The mean preoperative BRS was 3.87 ± 0.69 SD, defining HR as a score of 4.57 to 5.00, AR as 3.18 to 4.56, and LR as 0.00 to 3.17. At 24-month follow-up, HR and AR patients reported significantly greater mean scores than LR patients for all collected patient-reported outcomes (P < .001). All resilience groups reported significant improvement from baseline in PF, PI, SANE, and GPH (P < .001), at an average score exceeding the published minimal clinically important difference range for each outcome. However, HR and AR patients reported significantly greater improvement compared with the LR group for PI (P = .004), and AR patients furthermore reported greater improvement in GPH (P = .033) and SANE (P = .005) compared with LR patients.

CONCLUSION

Patients with higher preoperative resilience scores demonstrated greater 24-month improvements in PI, GPH, and SANE compared to patients with low resilience scores. While all groups reported clinically meaningful improvement from baseline, our results support that higher preoperative resilience, measured using BRS, is associated with improved patient-reported outcomes. Additional resources or support may be beneficial to improve postoperative outcomes for patients with lower resilience.

Does Deltoid Ligament Repair Reduce Complications and Improve Functional Outcomes Measured by PROMIS Scores Following Ankle Fracture Surgery?

Background

Deltoid repair (DR) in ankle fracture surgery remains controversial. This study aims to determine whether DR reduces complications and improves outcomes measured by Patient Reported Outcomes Measurement Information System (PROMIS) computerized adaptive tests (CATs) of physical function (PF) and pain interference (PI). We hypothesized that DR would reduce complications and improve PROMIS scores.

Methods

This was a retrospective study of 782 patients at a single institution who underwent ankle fracture surgery between January 2016 and December 2021. Two fellowship-trained foot and ankle orthopaedic surgeons independently reviewed all radiographs and assessed reduction quality and complications at final follow-up. Multiple extremity injuries, open fractures, and pilon variants were excluded. A total of 345 patients with deltoid ruptures were sent PROMIS CATs. Of those, 265 patients with minimum 1-year follow-up were analyzed for complications. Finally, 112 patients who completed CATs were analyzed for PROMIS. Wilcoxon rank-sum test compared PROMIS between groups. Linear regression modeled DR effect on PROMIS adjusted for relevant covariates and propensity scores.

Results

Fifty of the 265 patients (18.9%) underwent DR. The incidence of radiographic evident complications among 215 patients (81.1%) without repair (NDR) was 14.42%: 7 (3.26%) degenerative joint disease, 3 (1.40%) ankle joint malreduction, 4 (1.86%) syndesmotic malreduction, and 8 (3.72%) malleolar malunion. The DR group had no radiographic complications. Among patients who completed CATs (n = 112), DR (n = 21) was not significantly different for mean PF (54.31±9.83 vs 52.79±10.42, P = .71) or mean PI (47.21±7.82 vs 48.53±8.37, P = .59) than NDR (n=91). Adjusted regression models estimated a 1.89-point increase in PF and a 1.67-point decrease in PI for DR vs NDR. When adjusted for propensity scores, DR had PF 2.17 higher and PI 1.73 lower compared to NDR. Neither of these reach minimal clinically important difference criteria.

Conclusion

DR was associated with reduced radiographically evident complications following ankle fracture surgery. This study was underpowered to detect small effect sizes in PROMIS, and we remain uncertain if DR meaningfully improved patient-reported outcomes.

Level of Evidence

Level IV, retrospective case series study.

PROMIS Minimal Clinically Important Differences Across Foot and Ankle Surgeries

Background

Minimal clinically important differences (MCIDs) increase patient-reported outcome measure (PROM) utility by defining benchmarks of meaningful improvement. The threshold for appreciable improvement may be unique to specific patient characteristics. To help establish benchmarks and improve evaluation of patient progress, this study investigates whether surgery type and demographic characteristics impact MCID.

Methods

All foot and ankle patients within a single institution's PRO registry were screened. Patients without preoperative or ≥ 180-day follow-up in PROMIS physical function (PF) Computer Adaptive Test (CAT) (v2.0) and pain interference (PI) CAT (v1.1) were excluded. Foot and Ankle Single Assessment Numeric Evaluation (FA SANE) was used as an anchor for MCID calculations. MCID was compared across 11 foot and ankle surgical categories, reported sex, body mass index (BMI), and social deprivation index (SDI).

Results

We included 1243 patients with an average follow-up of 456 ± 176 days. Patients significantly improved in PF by 8.2 ± 10.9 (P < .001) and PI by -8.1 ± 9.5 (P < .001). Global MCID estimates for PF and PI were 5.5 (95% CI 4.9, 6.0) and -5.8 (95% CI -5.3, -6.3), respectively, when anchored against FA SANE. The MCIDs using a ½ SD distribution-based method were 5.5 and -4.8, respectively. Surgery type greatly affected MCID, ranging from 2.3 and -3.8 for hardware removals to 15.7 and -9.8 for small soft tissue surgeries. MCID differences across reported sex, BMI, and SDI never exceeded 1.9 points.

Conclusion

A 6-month postoperative improvement of ≥ 5.5 and ≤ -4.8 in PROMIS PF and PI suggest meaningful clinical differences from baseline. However, MCID values for PROMIS scales vary across foot and ankle surgeries and patient characteristics, suggesting a global MCID for patient populations may not reflect the true threshold of meaningful change for each individual patient. Anchoring to FA SANE allows physicians to more objectively gauge appreciable change in patient-specific contexts.

Level of Evidence

Level III, retrospective cohort study.

Are There Differences in Patient-Reported Outcomes Measurement Information System Scores After Total Knee and Total Ankle Arthroplasty in Matched Patients?

BACKGROUND

The purpose of this study was to evaluate Patient-Reported Outcomes Measurement Information System (PROMIS) scores, a generic patient-reported outcome measure (PROM), as a tool to compare outcomes between total knee (TKA) and total ankle arthroplasty (TAA).

METHODS

Patients who underwent TKA or TAA from January 1, 2019, to December 31, 2023, with at least 1 year of follow-up, were reviewed retrospectively. Upon application of the criteria, 2,418 TKAs and 500 TAAs were utilized for analysis. Demographics, PROMs, emergency department visits, readmissions, and revision surgeries were collected. Propensity score matching at a 3:1 ratio of TKA to TAA patients was then done, balancing age, sex, race, body mass index, and American Society of Anesthesiologists classification, which resulted in a final cohort of 1,256 TKAs and 470 TAAs.

RESULTS

Preoperative PROMIS pain interference (PI) scores were similar between TKA and TAA, and both showed improvements by 6 weeks. Patients undergoing TAA, however, had a greater decrease in PI scores at 1 year (TKA: -10.0 [-15.0 to -5.0]) versus TAA: -11.0 [-17.0 to -6.0]; P = 0.044). Regarding PROMIS physical function (PF), preoperative scores were also similar for TKA and TAA patients. Additionally, patients in both groups had similar improvement in PF at 1 year; however, TKA patients had better PF at 6 weeks (TKA: 41.0 [36.0 to 46.0] versus TAA: 37.0 [33.0 to 41.0]; P < 0.001). Preoperative PROMIS depression scores were similar between groups and showed similar improvement after surgery. Joint-specific PROMs improved in each cohort, respectively.

CONCLUSIONS

Both TKA and TAA showed improvement postoperatively in joint-specific PROMs, which concurrently resulted in PROMIS score improvement across all domains in both joints. This suggests that arthroplasties across different anatomic sites can be compared using generic PROMs. For TKA and TAA, similar improvements in PROMIS PI, PF, and depression were noted 1 year after surgery.

LEVEL OF EVIDENCE

III.

The Impact of Social Deprivation on Outcomes in Forefoot Surgery

BACKGROUND

The impact of social deprivation (SD) on health outcomes is a topic of increasing interest in orthopaedics. There are limited studies and no clear consensus, though, on the impact of SD on outcomes in foot and ankle surgery. Area deprivation index (ADI) is a well-studied and validated surrogate metric for SD. We hypothesized that patients with greater SD would have worse patient-reported pain and physical function at baseline and at 6 weeks and 6 months following elective forefoot surgery.

METHODS

We retrospectively analyzed data from 477 forefoot surgeries between January 2015 and December 2022 to determine if SD was associated with patient-reported outcomes (PROs) related to pain and physical function. Patient-Reported Outcomes Measurement Information System (PROMIS) physical function (PF) and pain interference (PI) assessments administered preoperatively and at 6 weeks and 6 months postoperatively. SD was quantified using the ADI. Patients were divided into high- and low-deprivation groups using the national median ADI of 50.

RESULTS

At baseline before surgery, PROMIS-PF and PROMIS-PI scores were similar between high and low social deprivation groups. At 6 weeks and 6 months after surgery, there were no significant differences between high- and low-deprivation groups for either PROMIS-PF or PROMIS-PI. Both groups (high and low social deprivation) demonstrated similar improvements in pain and function at 6 months after surgery. The only variable associated with outcomes was employment status, with disabled and unemployed patients exhibiting greater pain and less function before surgery. Disabled patients also had greater pain after surgery.

CONCLUSION

Based on our data, social deprivation did not appear to be associated with patient-reported pain or physical function prior to forefoot surgery or at 6 weeks or 6 months following surgery.

Outcomes of cobalt-chrome 3D-printed total talus replacement with and without combined total ankle replacement

BACKGROUND

Collapse of the talus and peri-talar arthritis pose treatment challenges due to the anatomy and location of the talus as a keystone of the foot and ankle. Custom 3D-printed total talus replacement (TTR) and combined total ankle total talus replacement (TATTR) have emerged as treatment options for these pathologies. However, the safety and efficacy of these implants is unknown due to the limited number of cases and short follow-up durations.

METHODS

This was a retrospective study to assess surgical outcomes of patients who underwent a TTR and TATTR with or without subtalar fusion. Patient demographics, intraoperative parameters, device related surgical and non-surgical events, imaging and clinical evaluations, and patient reported outcome (PRO) measures were compiled.

RESULTS

A total of 38 patients received a custom 3D-printed implant with mean follow-up time of 22.1 (range: 12-45) months. In this cohort, 7 (18.4 %) required secondary surgery and 3 (7.9 %) required implant removal. Multivariate logistic regression revealed that patient diagnosis of depression was a significant predictor of secondary surgery with an OR 17.50 (p = 0.037). Significant postoperative improvements were observed in the talocalcaneal height (p = 0.005) and talar declination angle (p = 0.013) for the TATTR group. VAS and PROMIS pain interference (PI) scores demonstrated an initial significant improvement in pain, but this improvement did not maintain significance at most recent follow-up. However, there was a significant increase in the PROMIS physical function (PF) scores (p = 0.037) at most recent follow-up.

CONCLUSION

These results demonstrate that TTR and TATTR provide significant improvement in post-operative radiographic foot and ankle alignment and physical function at the two-year timepoint. PRO findings suggest that patients are more active after surgery. Surgeons considering proceeding with either of these procedures should counsel patients about pain and functional outcomes as well as realistic expectations in patients with depression.

LEVEL OF EVIDENCE

Level 3.

Association of Preoperative Walking Speed With 1-Year Outcomes After Hip Arthroscopy for Femoroacetabular Impingement Syndrome

BACKGROUND

Previous studies have identified demographic, radiographic, and intraoperative predictors of outcomes after hip arthroscopy for femoroacetabular impingement syndrome, yet few studies have identified whether preoperative gait metrics can predict outcomes.

HYPOTHESIS

Increased preoperative step count, walking speed, step length, and gait symmetry will be associated with better outcomes after surgery.

STUDY DESIGN

Retrospective cohort study.

LEVEL OF EVIDENCE

Level 4.

METHODS

Patients who underwent hip arthroscopy between 2019 and 2022 and downloaded the smartphone app rHip, allowing for retroactive access of gait metric data, were identified. Preoperative gait metrics, age, sex, body mass index (BMI), and exercise participation were analyzed via multivariate stepwise linear regression for a relationship with 1-year postoperative patient-reported outcomes (PROs), including Hip Outcome Scale-Activities of Daily Living (HOS-ADL); HOS-Sports Subscale (HOS-SS), and 12-item international Hip Outcome Tool (iHOT-12). Thresholds for preoperative gait metrics were analyzed via receiver operator characteristic curve. A subgroup analysis was performed to compare those who did and did not reach this threshold.

RESULTS

A total of 43 patients (86% female; age, 33.1 ± 13.7 years; BMI, 23.9 ± 4.4 kg/m2) met inclusion criteria. Multivariate regression found that preoperative walking speed was significantly associated with postoperative HOS-ADL, HOS-SS, and iHOT-12 (P ≤ .01). A preoperative walking speed threshold of 1.065 m/s was predictive of outcome achievement. Those who failed to achieve this threshold were significantly older, of greater BMI, and less active (P ≤ .04). They also showed significantly worse 1-year postoperative scores (P ≤ .02) and lower PASS achievement for HOS-ADL, HOS-SS, and iHOT-12 (P ≤ .04).

CONCLUSION

Preoperative walking speed is significantly associated with 1-year outcomes after hip arthroscopy. Patients who averaged <1.065 m/s show significantly worse outcomes after surgery.

CLINICAL RELEVANCE

Assessment of preoperative walking speed may allow physicians to better counsel patients regarding expected outcomes after hip arthroscopy.

Patient-reported outcomes using PROMIS after tarsal tunnel release surgery

Tarsal tunnel syndrome is an entrapment neuropathy of the tibial nerve and its branches in the tarsal tunnel. The literature on surgical release of the tarsal tunnel shows variable outcomes with no studies reporting validated patient reported outcomes. We aim to determine clinical response after tarsal tunnel release using the Patient-Reported Outcomes Measurement Information System (PROMIS). CPT code 28035 was used to identify patients who underwent isolated tarsal tunnel release (TTR) between 1/1/2015 and 12/15/2022 at a single institution. Patient demographic data and PROMIS physical function (PF), pain interference (PI), and depression scores were prospectively collected at the initial pre-operative clinic visit and in follow-up throughout the episode of care after TTR. The validated distribution-based method (1/2 sd) was used to assess minimal clinically important difference (MCID) and bivariate analysis was used to determine postoperative recovery. A total of 39 patients who underwent TTR were included. The mean t-score change (pre- to post-operation) was 7.2 for PF, -6.1 for PI, and -5.93 for depression. MCID thresholds were calculated as PF increase of 4.7, PI decrease of 3.9, and depression decrease of 5.1. Fourteen (35 %), 24(62 %), and 27 (69 %) patients reached MCID for PF, PI, and depression, respectively. No relationship was observed between space-occupying lesions and patient outcomes. This study provides validated outcomes after TTR. Though there is significant improvement after surgery, the patients still experience some pain and physical limitations.

Establishment of Minimum Clinically Important Difference and Patient Acceptable Symptom State Thresholds for Foot and Ankle Ability Measure and Visual Analog Scale Scores After Hallux Valgus Surgery

BACKGROUND

Although clinically relevant thresholds such as minimal clinically important difference (MCID) and patient acceptable symptom state (PASS) have been widely described across orthopaedics, their application in hallux valgus surgery remains scarce. The purpose of this study was to determine the MCID and PASS thresholds for the visual analog scale (VAS) and Foot and Ankle Ability Measure (FAAM) scores after hallux valgus surgery.

METHODS

A retrospective review was performed in patients undergoing hallux valgus surgery at a single institution from January 2021 through December 2022. Patient-reported outcome measures (PROMs) were collected preoperatively and 1 year postoperatively. The specific PROMs used were the FAAM-activities of daily living (FAAM-ADL), Single Assessment Numeric Evaluation (SANE), and VAS scale. Two methods were used to calculate MCID and PASS thresholds: a distribution-based approach for MCID and an anchor-based approach using responses to a 1-year postoperative satisfaction question for PASS. The analysis identified optimal cutoff points that maximized sensitivity and specificity based on the Youden index. Overall, 86% (136/158) completed baseline PROMs, and 73% (99/136) completed 1-year PROMs.

RESULTS

The distribution-based MCID for FAAM-ADL, SANE, and VAS were calculated to be 10.8, 14.1, and 1.2, respectively. The percentage of patients who achieved MCID thresholds was 54% for FAAM-ADL, 42% for SANE, and 96% for VAS. The PASS threshold for FAAM-ADL, SANE, and VAS were ≥78.5, ≥85, and ≤ 2, respectively. The percentage of patients who achieved PASS thresholds was 78% for FAAM-ADL, 72% for SANE, and 69% for VAS.

CONCLUSION

This study identified useful values for the MCID and PASS thresholds of FAAM-ADL, SANE, and VAS scores at 1-year follow-up for patients undergoing hallux valgus surgery. Overall, despite not meeting the MCID thresholds, patients undergoing hallux valgus surgery were still likely to be satisfied with their surgery.

Clinical relevance of current patient-reported outcome measures for ankle fracture: surgeons' perspective

Objectives

Determine the relevance of the most frequently used patient-reported outcome measures (PROMs) for monitoring patient recovery after ankle fracture, from the clinical perspective of orthopaedic trauma surgeons, given lack of validated PROMs.

Design

Prospective cohort.

Setting

Orthopaedic Trauma Association committee meetings, electronic correspondence.

Patients/Participants

Orthopaedic trauma surgeons.

Intervention

Delphi method for consensus activities.

Level of Evidence

IV.

Main Outcome Measurements

Most clinically relevant PROMs for ankle fracture recovery.

Results

Several English-language PROMs were identified based on use in literature and relevance to ankle fractures. 7 were selected by expert consensus. These are the Ankle Fracture Outcome of Rehabilitation Measure (A-FORM), Foot and Ankle Ability Measure (FAAM), American Academy of Orthopaedic Surgeons (AAOS), Foot and Ankle Disability Index (FADI) Score, Lower Extremity Functional Scale (LEFS), Olerud-Molander Ankle Score (OMAS), and Patient-Reported Outcome Measurement Information System Physical Function (PROMIS PF). The most clinically relevant PROM is the A-FORM, followed by the AAOS, LEFS, PROMIS PF, FADI, and OMAS, and the least clinically relevant overall, the FAAM.

Conclusions

Understanding which PROM best matches physician expectations for tracking recovery is an important step toward a robust, evidence-based approach to patient care. The A-FORM was identified as the most clinically relevant among the most used PROMs. These results will aid surgeons, clinicians, and scientists to identify a uniformly, clinically relevant PROM for the treatment and study of outcomes and recovery after isolated ankle fracture.

Social Vulnerability Index Provides Greater Granularity Compared With the Area Deprivation Index When Assessing Outcomes Following Elective Lumbar Fusion

STUDY DESIGN

Retrospective review of a single institution cohort.

OBJECTIVE

To determine whether area deprivation index (ADI) or social vulnerability index (SVI) is more suitable for evaluating minimum clinically important difference (MCID) achievement following elective lumbar fusion as captured by the Patient-Reported Outcomes Measurement Information System (PROMIS).

SUMMARY OF BACKGROUND DATA

A total of 182 patients who underwent elective one-level to two-level posterior lumbar fusion between January 2015 and September 2021.

MATERIALS AND METHODS

ADI and SVI values were calculated from patient-supplied addresses. Patients were grouped into quartiles based on values; higher quartiles represented greater disadvantage. MCID thresholds for Pain Interference (PI) and Physical Function (PF) were determined through a distribution-based method. Multivariable logistic regression was performed to identify factors impacting MCID attainment. Univariate logistic regression was performed to determine which themes comprising SVI values affected MCID achievement. Statistical significance was set at P <0.05.

RESULTS

Multivariable logistic regression demonstrated that ADI and SVI quartile assignment significantly impacted achievement of MCID for PI ( P =0.04 and 0.01, respectively) and PF ( P =0.03 and 0.02, respectively). Specifically, assignment to the third ADI and SVI quartiles were significant for PI (OR: 0.39 and 0.23, respectively), and PF (OR: 0.24 and 0.22, respectively). Race was not a significant predictor of MCID for either PI or PF. Univariate logistic regression demonstrated that among SVI themes, the socioeconomic status theme significantly affected achievement of MCID for PI ( P =0.01), while the housing type and transportation theme significantly affected achievement of MCID for PF ( P =0.01).

CONCLUSION

ADI and SVI quartile assignment were predictors of MCID achievement. While ADI and SVI may both identify patients at risk for adverse outcomes following lumbar fusion, SVI offers greater granularity in terms of isolating themes of disadvantage impacting MCID achievement.

Arthroscopic treatment of ankle multiligamentous injuries provides similar clinical outcomes to the treatment of isolated lateral ligament injury at the 2-year follow-up

PURPOSE

Rotational ankle instability is a multiligamentous injury defined as an overload injury of the deltoid ligament caused by a long-standing injury of the lateral collateral ligament in patients affected by chronic ankle instability. The purpose of the study was to compare the clinical outcomes of combined arthroscopic repair of lateral and medial ankle ligaments for rotational ankle instability versus isolated arthroscopic lateral ligament repair for lateral ankle instability at 2 years' follow-up.

METHODS

Between 2019 and 2021, 108 patients with chronic ankle instability were consecutively treated by arthroscopy. Of this group, 83 patients (77%) [median age: 26 (range, 14-77) years] underwent an isolated all-inside lateral ligament repair for lateral ankle instability (group A). In the remaining 25 patients (23%) [median age: 27 (range, 17-58) years], rotational ankle instability was clinically suspected and confirmed during arthroscopy; thus, a combined all-inside repair of lateral and medial ligaments was performed (group B). The same postoperative protocol was utilised for both groups. Patients were prospectively evaluated before surgery, at 3, 6, 12 and 24 months with Foot Functional Index (FFI) score, visual analogue scale (VAS) and Foot and Ankle Ability Measure-Sports subscale (FAAM-SS). At the latest follow-up, the satisfaction rate and complications were also recorded.

RESULTS

In both groups, FFI, VAS and FAAM-SS scores significantly improved compared to preoperative values (p < 0.001). In addition, according to all the scores evaluated, there was no significative difference (n.s) between groups at the final follow-up or at any of the intermediate follow-up. No major complications were observed in both groups.

CONCLUSIONS

Arthroscopic ligament repair in case of ankle multiligamentous injuries, such as in rotational ankle instability, provides excellent clinical outcomes and is comparable to isolated lateral ligament repair at 2 years' follow-up. Therefore, when treating ankle instability, arthroscopic repair of each and every ligament that appears injured provides the best potential outcomes and is the recommended treatment.

LEVEL OF EVIDENCE

Level II, prospective comparative.

Minimal important clinical difference values are not uniformly valid in the active duty military population recovering from shoulder surgery

BACKGROUND

There are multiple methods for calculating the minimal clinically important difference (MCID) threshold, and previous reports highlight heterogeneity and limitations of anchor-based and distribution-based analyses. The Warfighter Readiness Survey assesses the perception of a military population's fitness to deploy and may be used as a functional index in anchor-based MCID calculations. The purpose of the current study in a physically demanding population undergoing shoulder surgery was to compare the yields of 2 different anchor-based methods of calculating MCID for a battery of PROMs, a standard receiver operating characteristic (ROC) curve-based MCIDs and baseline-adjusted ROC curve MCIDs.

METHODS

All service members enrolled prospectively in a multicenter database with prior shoulder surgery that completed pre- and postoperative PROMs at a minimum of 12 months were included. The PROM battery included Single Assessment Numeric Evaluation (SANE), American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form (ASES), Patient Reported Outcome Management Information System (PROMIS) physical function (PF), PROMIS pain interference (PI), and the Warfighter Readiness Survey. Standard anchor-based and baseline-adjusted ROC curve MCIDs were employed to determine if the calculated MCIDs were both statistically and theoretically valid (95% confidence interval [CI] either completely negative or positive).

RESULTS

A total of 117 patients (136 operations) were identified, comprising 83% males with a mean age of 35.7 ± 10.4 years and 47% arthroscopic labral repair/capsulorrhaphy. Using the standard, anchor-based ROC curve MCID calculation, the area under the curve (AUC) for SANE, ASES, PROMIS PF, and PROMIS PI were greater than 0.5 (statistically valid). For ASES, PROMIS PF, and PROMIS PI, the calculated MCID 95% CI all crossed 0 (theoretically invalid). Using the baseline-adjusted ROC curve MCID calculation, the MCID estimates for SANE, ASES, and PROMIS PI were both statistically and theoretically valid if the baseline score was less than 70.5, 69, and 65.7.

CONCLUSION

When MCIDs were calculated and anchored to the results of standard, anchor-based MCID, a standard ROC curve analysis did not yield statistically or theoretically valid results across a battery of PROMs commonly used to assess outcomes after shoulder surgery in the active duty military population. Conversely, a baseline-adjusted ROC curve method was more effective at discerning changes across a battery of PROMs among the same cohort.

Defining Clinically Significant Outcome Thresholds for the Patient-Reported Outcomes Measurement Information System (PROMIS) at 2 Years After Gluteus Medius and/or Minimus Repair

Background

Clinically significant outcome (CSO) thresholds are invaluable to the interpretation of patient-reported outcomes (PROs). The Patient-Reported Outcomes Measurement Information System (PROMIS) is gaining popularity among the orthopaedic community; however, CSO thresholds for PROMIS are yet to be defined for outcomes after gluteus medius and/or minimus (GM) repair.

Purpose

To (1) define CSO thresholds for PROMIS-Pain Interference (PROMIS-PI) and PROMIS-Physical Function (PROMIS-PF) after GM repair, (2) correlate these PROMIS scores with legacy hip-specific PROs, and (3) quantify their floor and ceiling effects.

Study Design

Case series; Level of evidence, 4.

Methods

Consecutive patients who underwent primary GM repair between September 2017 and June 2021 with completed PROMIS at minimum 2-year follow-up were evaluated. The minimal clinically important difference, Patient Acceptable Symptom State, and substantial clinical benefit thresholds were defined for the PROMIS-PI and PROMIS-PF as well as for legacy PROs: Hip Outcome Score-Activities of Daily Living (HOS-ADL) and Hip Outcome Score-Sports Subscale (HOS-SS); modified Harris Hip Score (mHHS); 12-item International Hip Outcome Tool (iHOT-12); and the visual analog scale (VAS) for pain and satisfaction. Pearson correlations were performed between PROMIS scores and legacy PROs. Rates of floor and ceiling effects were quantified.

Results

Overall, 107 patients (81.7% follow-up compliance; mean age, 59.8 ± 8.8 years; 92.5% female; mean body mass index, 28.6 ± 6.3 kg/m2) were included in the analysis. GM tears were partial thickness in 56.1% of cases and treated endoscopically in 64.5% of cases. The minimal clinically important difference, Patient Acceptable Symptom State, and substantial clinical benefit thresholds, respectively, were as follows: PROMIS-PI (-4.6, 56.0, 52.6), PROMIS-PF (3.5, 42.7, 43.7), HOS-ADL (10.7, 68.2, 78.6), HOS-SS (16.5, 58.6, 60.6), mHHS (9.0, 64.3, 71.5), iHOT-12 (14.2, 63.6, 69.4), VAS pain (-16.1, 34.9, 28.1), and VAS satisfaction (not applicable, 70.9, 93.6). Moderate to strong correlations were observed between the PROMIS and legacy PROs. The PROMIS-PI showed a significant postoperative floor effect of 18.7%.

Conclusion

Study findings indicated that the PROMIS is effective for use in GM repair patients, given the moderate-to-strong correlations between the PROMIS and legacy hip-specific PROs, the mostly limited floor and ceiling effects, and large effect sizes. Use of PROMIS instead of legacy PROs may aid in limiting survey burden.

Safety and Efficacy of One vs Two Incision Broström Gould with Calcaneal Osteotomy and Peroneal Tendon Debridement Surgery

Surgical intervention, such as the Broström-Gould procedure, is typically indicated for patients with chronic lateral ankle instability. In this study, we are comparing the safety and efficacy of the Broström-Gould procedure with peroneal tendon debridement, a sliding lateralizing calcaneal osteotomy, and adjuvant procedures performed with a single- versus double-incision approach. Our retrospective analysis included patients who underwent the procedure of interest between 2011 and 2020. Patients were divided into 2 groups: undergoing either a 1-incision (n = 53) or a 2-incision approach (n = 47), both with a lateralizing calcaneal osteotomy. A significant difference in skin bridge breakdown was observed between the 2-incision (n = 6 [13%]) and 1-incision groups (n = 0 [0%]). There were no significant differences in infection, deep wound dehiscence, nerve palsy, or neuroma between patients in the 2 groups. Furthermore, no statistically significant differences in mean PROMIS scores existed between the cohorts. The described Broström-Gould procedure shows promise for treating chronic ankle instability. While patients in both single- and double-incision groups had similar rates of postoperative complications, the decreased incidence of skin bridge breakdown in the 1incision group highlights the approach's safety and potential benefits in reducing wound-related complications.

Early Functional Outcomes and Complications of Tibial and/or Peroneal Sesamoidectomy Utilizing a Burr Through a Medial Approach

BACKGROUND

Sesamoid pathology can lead to significant pain and disability both with activities of daily living and high-impact athletic movements. Sesamoidectomy is a widely used procedure for patients who fail conservative treatment measures. Traditional dorsal or plantar approaches for sesamoidectomy have shown to successfully alleviate pain, but complications were reported. A proposed alternative medial approach using a burr may provide many advantages compared with traditional approaches. This study presents patient outcomes and complications for this technique.

METHODS

This was a retrospective chart review of patients undergoing sesamoidectomy (tibial, peroneal, or both) using a burr through a medial approach to the sesamoid metatarsal articulation. Data collected included patient demographics, radiographic analysis, and outcomes: Veterans Rand 12 Item Health Survey (VR-12), Foot and Ankle Ability Measure (FAAM), visual analog scale (VAS), patient satisfaction, and complications.

RESULTS

Twenty-seven patients (29 feet) were included. The mean age was 38.4 years followed up for a mean of 30.9 months. VR-12 physical component improved from 35.98 ± 7.86 to 51.34 ± 8.01 (P < .001), FAAM ADL and sport improved from 58.33 ± 16.61 to 83.27 ± 18.28 (P < .001) and 26.37 ± 20.31 to 63.75 ± 29.74 (P < .001), respectively. Patient satisfaction with the treatment was 80.59% ± 27.06%. The overall complication rate was 11 (37.9%) whereas the overall reoperation rate was 4 (13.7%) of 29 feet. Complications included 1 arthrofibrosis, 1 flexor hallucis longus subacute rupture, and 1 asymptomatic hallux valgus. There were no sesamoid excision revisions.

CONCLUSION

Sesamoidectomy using a medial approach with a burr provided significantly improved short-term functional outcomes, 80% patient satisfaction rate, with a relatively acceptable complications rate including 20% persistent pain. The medial approach is familiar to orthopaedic foot and ankle surgeons, provides adequate exposure, and eliminates the possibility of a painful plantar scar while avoiding disruption of the plantar plate, flexor hallucis brevis tendon, and ligamentous structures attached to the sesamoids. Larger studies with long-term follow-up from other centers are needed.

Clinical Outcomes of Revision Surgery Using a Dorsal Approach After Failed Primary Interdigital Neuroma Excision

BACKGROUND

Revision neurectomy may be approached with either a dorsal or a plantar incision. Although a plantar approach is more commonly described, few studies have investigated outcomes following a dorsal revision neuroma excision. In this study, we performed a case series on a group of patients who underwent revision neuroma excision through a dorsal approach and reported complications and outcomes using validated patient-reported outcome measures (PROMs).

METHODS

This retrospective case series included 10 patients who underwent a dorsal-approach revision neuroma excision and had preoperative and minimum 1-year postoperative Patient-Reported Outcomes Measurement Information System (PROMIS) scores. Complications including neuroma recurrence and continued unresolved pain were obtained from the electronic medical record. Preoperative and postoperative PROMIS scores were compared to assess improvement in PROMs.

RESULTS

There were significant improvements in the PROMIS pain interference (P = .026), pain intensity (P = .008), and global physical health (P = .017) domains. One patient experienced recurrence of their neuroma 4 years after surgery.

CONCLUSION

This case series provides preliminary data indicating that revision neurectomy using a dorsal approach leads to satisfactory outcomes in pain-related PROMs. Further research with comparative study designs is necessary to determine if one approach is superior to the other.

LEVELS OF EVIDENCE

Level IV: Retrospective.

The Impact of Blood Flow Restriction Training on Tibial Bone Stress Injury Rehabilitation: An Exploratory Case Series

Background

Lower extremity bone stress injuries (BSI) are common injuries among athletes and military members. Typical management involves a period of restricted weightbearing which can have rapid detrimental effects upon both muscle and bone physiology. Few studies have investigated the effect of blood flow restriction (BFR) training on bone in the rehabilitative setting.

Purpose

The purpose of this study was to investigate the effects of lower extremity exercise with the addition of BFR upon bone mineral density, bone mineral content, and lean body mass in military members with tibial BSIs.

Study Design

Case series.

Methods

Twenty military members with MRI-confirmed tibial BSI were recruited to complete lower extremity exercise with the addition of BFR twice per week for four weeks. The BFR cuff was applied proximally to the participant's involved limb while they performed gluteal, thigh, and leg resistance exercises. Outcomes were assessed at baseline and four weeks. The primary outcomes were whole leg bone mineral density (BMD), bone mineral content (BMC), and lean body mass (LM) as measured by dual-energy x-ray absorptiometry. Secondary outcomes included thigh and leg circumference measures and patient-reported outcomes, including the Lower Extremity Functional Scale (LEFS), Patient-Reported Outcomes Measurement Information System 57 (PROMIS-57), and Global Rating of Change (GROC).

Results

No significant differences were found in BMD (p=0.720) or BMC (p=0.749) between limbs or within limbs over time. LM was generally less in the involved limb (p=0.019), however there were no significant differences between or within limbs over time (p=0.404). For thigh circumference, significant main effects were found for time (p=0.012) and limb (p=0.015), however there was no significant interaction effect (p=0.510). No significant differences were found for leg circumference (p=0.738). Participants showed significant mean changes in LEFS (15.15 points), PROMIS physical function (8.98 points), PROMIS social participation (7.60 points), PROMIS anxiety (3.26 points), and PROMIS pain interference (8.39 points) at four weeks.

Conclusion

The utilization of BFR in the early rehabilitative management of tibial BSI may help mitigate decrements in both bone and muscle tissue during periods of decreased physical loading.

Level of Evidence

4.

The minimal important change is not a universal fixed value across diagnoses when using the FAOS and FAAM in patients undergoing elective foot and ankle surgery

PURPOSE

This study aimed to calculate region and diagnosis-specific minimal important changes (MICs) of the Foot and Ankle Outcome Score (FAOS) and the Foot and Ankle Ability Measure (FAAM) in patients requiring foot and ankle surgery and to assess their variability across different foot and ankle diagnoses.

METHODS

The study used routinely collected data from patients undergoing elective foot and ankle surgery. Patients had been invited to complete the FAOS and FAAM preoperatively and at 3-6 months after surgery, along with two anchor questions encompassing change in pain and daily function. Patients were categorised according to region of pathology and subsequent diagnoses. MICs were calculated using predictive modelling (MICPRED) and receiver operating characteristic curve (MICROC) method and evaluated according to strict credibility criteria.

RESULTS

Substantial variability of the MICs between forefoot and ankle/hindfoot region was observed, as well as among specific foot and ankle diagnoses, with MICPRED and MICROC values ranging from 7.8 to 25.5 points and 9.4 to 27.8, respectively. Despite differences between MICROC and MICPRED estimates, both calculation methods exhibited largely consistent patterns of variation across subgroups, with forefoot conditions systematically showing smaller MICs than ankle/hindfoot conditions. Most MICs demonstrated high credibility; however, the majority of the MICs for the FAOS symptoms subscale and forefoot conditions exhibited insufficient or low credibility.

CONCLUSION

The MICs of the FAOS and FAAM vary across foot and ankle diagnoses in patients undergoing elective foot and ankle surgery and should not be used as a universal fixed value, but recognised as contextual parameters. This can help clinicians and researchers in more accurate interpretation of the FAOS and FAAM change scores.

LEVEL OF EVIDENCE

Level IV.

The severity of preoperative bone marrow oedema negatively influences short-term clinical outcomes following arthroscopic bone marrow stimulation for osteochondral lesions of the talus

PURPOSE

The purpose of this study was to study the effects of the severity of preoperative bone marrow oedema (BME) on the postoperative short-term outcomes following bone marrow stimulation (BMS) for osteochondral lesions of the talus (OLTs) and to propose a new metric that combines volume and signal density to evaluate BME.

METHODS

Sixty-five patients with symptomatic OLTs (<100 mm2) and preoperative BME, who received BMS in our institution from April 2017 to July 2021 with follow-ups of 3, 6 and 12 months, were analysed retrospectively. The area, volume and signal value of the BME were collected on preoperative magnetic resonance imaging. The enroled patients were divided into two groups according to the BME index (BMEI), which was defined as the product of oedema relative signal intensity and the relation of oedema volume to total talar volume. Visual analogue scale, American Orthopedic Foot and Ankle Society (AOFAS), Tegner, Foot and Ankle Ability Measure (FAAM)-activities of daily living (ADL) and Sports scores were assessed before surgery and at each follow-up. The relationship between the scores and the volume, relative signal intensity and BMEI was explored.

RESULTS

Sixty-five patients with preoperative BME were divided into the mild (n = 33) and severe (n = 32) groups based on the BMEI. A significant difference was found for each score with the general linear model for repeated measures through all follow-up time points (p < 0.001). For the preoperative and 12-month postoperative changes of the enroled patients, 53 patients (81.5%) exceeded the minimal clinically important difference of AOFAS and 26 (40.0%) exceeded that of FAAM-sports in this study. The mild group showed significantly more improvement in AOFAS scores at 12 months (89.6 ± 7.0 vs. 86.2 ± 6.2) and FAAM-ADL scores at 6 months (83.6 ± 7.6 vs. 79.7 ± 7.7) and 12 months (88.5 ± 8.5 vs. 84.4 ± 7.7) than the severe group (p < 0.05). No significant difference of all the scores between the groups was found at 3 months. No significant correlation was found in each group between BMEI and clinical outcomes.

CONCLUSION

The severity of the preoperative BME negatively affected short-term clinical outcomes following arthroscopic BMS for OLTs. Worse clinical outcomes were shown at postoperative 6 and 12 months in patients with a high preoperative BMEI, which could be a favourable parameter for assessing the severity of BME and assist in developing personalised rehabilitation plans and determining the approach and timing of surgery.

LEVEL OF EVIDENCE

Level III.

Defining the Patient Acceptable Symptom State (PASS) for PROMIS After Total Ankle Replacement

BACKGROUND

Although patient-reported outcomes (PROs), such as the Patient-Reported Outcomes Measurement Information System (PROMIS), are a key element of evaluating success after total ankle replacement (TAR), many do not explicitly state a key factor of postoperative success: is the patient satisfied with their outcome after TAR? The patient acceptable symptom state (PASS) represents the symptom threshold beyond which patients consider themselves well. This study aimed to establish the PROMIS thresholds for the PASS in a primary cohort of TAR patients.

METHODS

This single-institution study included 127 primary TAR patients with preoperative and 2-year postoperative PROMIS scores. At 2 years postoperatively, patients answered 2 PASS anchor questions (Satisfaction, Delighted-Terrible scale) with Likert-scale responses. PASS thresholds with 95% confidence intervals (CIs) were calculated from PROMIS scores using an anchor-based method. Using a bootstrapping technique with 1,000 iterations, the Youden index was calculated to determine the best specificity and sensitivity coordinates to maximize their combination. Finally, preoperative variables associated with the likelihood of achieving the PASS were assessed.

RESULTS

There was a strong association between PASS thresholds and PROMIS domains, especially Pain Interference (PASS threshold of <56.0, area under the receiver operating characteristic curve [AUC] = 0.940), Pain Intensity (<48.4, AUC = 0.936), and Physical Function (>44.7, AUC = 0.883). The likelihood of achieving the PASS was not affected by age, race, gender, American Society of Anesthesiologists (ASA) class, body mass index, or severity of ankle deformity. Patients with worse preoperative Physical Function and Global Mental Health scores were less likely to meet the PASS threshold for Physical Function postoperatively (p = 0.028 and 0.041).

CONCLUSIONS

The ability to reach the PASS after TAR was most strongly associated with postoperative PROMIS pain scores. However, PASS thresholds were generally poorer than population means. This demonstrates that patients do not need to reach normal pain or physical function levels to have an acceptable symptom state after TAR.

LEVEL OF EVIDENCE

Prognostic Level IV . See Instructions for Authors for a complete description of levels of evidence.

Role of insole material in treatment of plantar fasciitis: A randomized clinical trial

BACKGROUND

In this randomized clinical trial, we compared the early effects of polyethylene (PE), polyurethane (PU), and Carbon Fiber insoles in the treatment of PF using a set of patient-reported outcomes.

METHODS

Patients were randomly allocated one of the three prefabricated insoles - Carbon Fiber (n = 14), PU (n = 14), or PE (n = 17) for regular use. Their response was recorded using PROMIS 3a (for pain intensity), PROMIS 4a (for pain interference), FAOS (Foot and Ankle Outcome Score), and VAS for pain at baseline, two, six, and twelve weeks.

RESULTS

The PROMIS pain intensity scores improved in both the Carbon Fiber and the PE groups starting at the 6th week (p = 0.04) and 2nd week (p = 0.002), respectively. PROMIS pain interference scores also showed positive trends in these two groups (p = 0.02, p = 0.004, respectively).

CONCLUSION

Prefabricated Carbon Fiber and PE insoles showed significant pain-reducing effects in patients with PF.

LEVELS OF EVIDENCE

Level I, Randomized controlled trial.

Early results of combined total ankle total talus replacement in the revision setting

BACKGROUND

Revision of failed total ankle replacement (TAR) is challenging and associated with increased morbidity. Given the increased popularity of TAR in treating end-stage ankle arthritis (ESAA), viable revision options are needed. The objective of this case series is to present a minimum 2-year clinical and radiographic outcomes of patient-specific custom 3D-printed total ankle total talus (TATR) prostheses in this unique subset of patients.

METHODS

19 participants with ESAA and failed primary TAR who underwent TATR by a single surgeon at our institution from 2019 to 2021 were retrospectively identified. All participants were indicated for revision of primary STAR implant (Stryker, Kalamazoo, MI) and underwent replacement with 3D-printed titanium implants based on preoperative CT analysis (Additive Orthopaedics, Little Silver, NJ). Custom components included a mobile-bearing total talus and stemmed tibial system, performed through an anterior approach. Pre- and postoperative patient-reported outcomes were assessed using the Patient Reported Outcomes Measurement Information System (PROMIS). Pre- and postoperative implant alignment was assessed using medial distal tibial angle (MDTA) and tibiotalar angle (TTA) on anteroposterior, and sagittal tibial angle (STA) on lateral weight-bearing plain films.

RESULTS

The average patient age was 60.6 (range, 39-77) years, with an average follow-up of 37.9 (range, 25.3-57.5) months. There was statistically significant improvement in all PROMIS domains. Short-term survivorship was 100%, with two participants (11.0%) requiring reoperation for postoperative complications: one underwent open reduction internal fixation of the tibia for a periprosthetic fracture, and another underwent medial gutter debridement and tarsal tunnel release for recurrent pain. There were no significant differences in pre- versus postoperative radiographic alignment measured by MDTA (89.9 vs 86.4), TTA (89.7 vs 88.1), or STA (85.2 vs 85.3).

CONCLUSION

Custom 3D-printed TATR is a promising option for revision TAR. There was significant short-term improvement in pain and physical function, with excellent short-term survivorship and an acceptable postoperative complication rate.

Defining the patient acceptable symptom state using PROMIS following reconstruction of the progressive collapsing foot deformity

BACKGROUND

The patient acceptable symptom state (PASS) represents the threshold beyond which patients are satisfied with their outcome. This study aimed to define PASS thresholds for progressive collapsing foot deformity (PCFD) reconstruction using Patient-Reported Outcomes Measurement Information System (PROMIS) scores and anchor question responses.

METHODS

This retrospective study consisted of 109 patients who underwent flexible PCFD reconstruction, had preoperative and 2-year postoperative PROMIS scores, and 2-year postoperative anchor question responses. ROC curve analyses were performed to quantify PASS thresholds.

RESULTS

PASS thresholds for the PROMIS Physical Function (PF) and Pain Interference (PI) domains were found to be lower and higher, respectively, than population norms. Furthermore, patients with higher preoperative PROMIS PF scores or lower preoperative PROMIS PI scores had a significantly higher likelihood of achieving the PASS thresholds.

CONCLUSION

In addition to guiding future outcomes research, these results may help surgeons optimize treatment for PCFD and better manage patient expectations.

LEVEL OF EVIDENCE

III, retrospective cohort study.

A Comparison of PROMIS Scores of Metatarsophalangeal Joint Arthrodesis and Polyvinyl Alcohol Hydrogel Implant Hemiarthroplasty for Hallux Rigidus

BACKGROUND

The current literature shows similar clinical outcomes between first metatarsophalangeal (MTP) joint arthrodesis and synthetic cartilage implant (SCI) hemiarthroplasty in the treatment of hallux rigidus; however, prior studies have not reported validated patient-reported outcome measures (PROMs). To our knowledge, this is the first study to compare PROMs using 6 domains of the validated Patient-Reported Outcomes Measurement Information System (PROMIS) in patients treated for hallux rigidus with MTP joint arthrodesis and with SCI hemiarthroplasty. In addition, this novel study provides comparative data on the complication and revision rates for each procedure.

METHODS

A single-center, retrospective registry search identified all patients with preoperative PROMIS scores who underwent MTP joint arthrodesis or SCI hemiarthroplasty for hallux rigidus between February 2016 and June 2021. The study aimed to determine if the 2 procedures showed statistically or clinically equivalent PROMIS scores in 6 domains: physical function, pain interference, pain intensity, global physical health, global mental health, and depression. A multivariable linear regression analysis was performed to compare adjusted 1-year postoperative PROMIS scores between the 2 cohorts. Complication and revision rates were also compared.

RESULTS

The study included 82 patients who underwent SCI hemiarthroplasty and 101 who underwent MTP joint arthrodesis. Demographic data and preoperative hallux rigidus severity showed no significant differences between the cohorts. PROMIS scores were mostly comparable between the 2 groups, except for the pain intensity domain. The patients who underwent MTP joint arthrodesis exhibited significantly better pain relief at 1 and 2 years postoperatively, which was supported by adjusted postoperative PROMIS scores. At 2 years, the SCI group had worse pain intensity scores and lower global physical health scores. There were no differences between the cohorts in additional PROMIS scores or complication data.

CONCLUSIONS

While outcomes in most of the domains were similar, MTP joint arthrodesis was more effective at mitigating pain intensity compared with SCI hemiarthroplasty. This information can guide patient counseling and decision-making when considering surgical intervention for hallux rigidus.

LEVEL OF EVIDENCE

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Comparison of Minimally Invasive Chevron Akin and Open Lapidus Surgery in Older Patients at a Minimum 1-Year Follow-Up

Background

Hallux valgus deformity affects more than 35% of people aged ≥65 years. Surgical correction in this population can be more complicated because of poor bone quality, worse deformity, and postoperative recovery challenges. The purpose of this study was to compare the radiographic and clinical outcomes of patients aged ≥65 years who underwent either open Lapidus or minimally invasive chevron Akin osteotomy for bunion correction.

Methods

A retrospective review identified 62 patients aged ≥65 years who were treated surgically for hallux valgus with at least 1-year postoperative Patient-Reported Outcomes Measurement Information System (PROMIS) scores (physical function and pain interference). Preoperative and at least 6-month postoperative radiographs were measured for the hallux valgus angle and intermetatarsal angle. PROMIS scores were obtained preoperatively and at 1 and/or 2 years postoperatively. Differences in demographic, clinical, and radiographic outcomes were assessed using the Mann Whitney U test and P values were adjusted for a false discovery rate of 5%.

Results

There was no difference between the MIS and open cohorts in pre- or postoperative radiographic measurements or clinical outcomes at any time point. At 1 year postoperatively, both groups had statistically significant improvements in the PROMIS pain interference domain but only the MIS group had a statistically significant improvement in the PROMIS physical function domain. Clinical significance was equivocal. At 2 years postoperatively, there were clinically and statistically significant improvements in the PROMIS pain interference and physical function domains for the open and MIS groups.

Conclusion

Patients in both surgical groups had improvement in radiographic measurements and 2-year PROMIS scores, although there was no clinical or statistical difference found between groups. MIS and open surgical techniques appear to be safe and effective in correcting hallux valgus in older patients; however, patients may need to be counseled that maximum improvement after surgery may take more than 1 year.

Level of Evidence

Level III, retrospective cohort study.

Differences in Baseline Physical Function and Mental Health PROM Scores in Patients With Foot and Ankle Conditions

BACKGROUND

This study sought to establish normative values for baseline physical and mental health by foot and ankle diagnosis using validated PROMIS scores and to compare the correlation between these 2 outcomes across common diagnoses. Additionally, it investigated the effects associated with chronic vs acute conditions and specific diagnoses on mental health.

METHODS

We reviewed baseline PROMIS Physical Function 10a (PF10a) and PROMIS Global-Mental (PGM) scores of 14,245 patients with one of the 10 most common foot and ankle diagnoses seen at our institution between 2016 and 2021. Pearson correlation coefficients were calculated to assess the relationship between PF10a and PGM by diagnosis. A multivariable regression model including age, sex, language, race, ethnicity, education level, income, and Charlson Comorbidity Index was used to determine the associated effect of diagnosis on PGM score.

RESULTS

On unadjusted analysis, patients diagnosed with an ankle fracture had the lowest mean physical function, whereas patients with hallux valgus had the highest (PF10a = 33.9 vs 46.7, P < .001). Patients with foot/ankle osteoarthritis had the lowest mean self-reported mental health, whereas patients with hallux rigidus had the highest (PGM = 49.9 vs 53.4, P < .001). PF10a and PGM scores were significantly positively correlated for all diagnoses; the correlation was strongest in patients diagnosed with foot/ankle osteoarthritis or hammertoes (r = 0.511) and weakest in patients with ankle fractures (r = 0.232) or sprains (r = 0.280). Chronic conditions, including hammertoes (β = -5.1, 95% CI [-5.8, -4.3], P < .001), foot/ankle osteoarthritis (β = -5.0, 95% CI [-5.7, -4.3], P < .001), and hallux valgus (β = -4.8, 95% CI [-5.5, -4.1], P < .001) were associated with the largest negative effects on patients' mental health.

CONCLUSION

Self-reported physical function and mental health varied across common foot and ankle diagnoses and were more tightly correlated in chronic conditions. The associations between diagnosis and mental health scores appear larger for more chronic diagnoses, including those that are generally associated with relatively unimpaired physical function.

Recovery Curves for Lisfranc ORIF Using PROMIS Physical Function and Pain Interference

OBJECTIVES

To determine the postoperative trajectory and recovery of patients who undergo Lisfranc open reduction and internal fixation using Patient-Reported Outcomes Measurement Information System (PROMIS) physical function (PF) and pain interference (PI).

METHODS

DESIGN

Retrospective cohort study.

SETTING

Level 1 trauma center.

PATIENT SELECTION CRITERIA

Patients who underwent Lisfranc open reduction and internal fixation between January 2002 and December 2022 with documented PROMIS PF and/or PI scores after surgery.

OUTCOME MEASURES AND COMPARISONS

PROMIS PF and PI were mapped over time up to 1 year after surgery. A subanalysis was performed to compare recovery trajectories between high-energy and low-energy injuries.

RESULTS

A total of 182 patients were included with average age of 38.7 (SD 15.9) years (59 high-energy and 122 low-energy injuries). PROMIS PF scores at 0, 6, 12, 24, and 48 weeks were 30.2, 31.4, 39.2, 43.9, and 46.7, respectively. There was significant improvement in PROMIS PF between 6 and 12 weeks ( P < 0.001), 12-24 weeks ( P < 0.001), and 24-48 weeks ( P = 0.022). A significant difference in PROMIS PF between high and low-energy injuries was seen at 0 week (28.4 vs. 31.4, P = 0.010). PROMIS PI scores at 0, 6, 12, 24, and 48 weeks were 62.2, 58.5, 56.6, 55.7, and 55.6, respectively. There was significant improvement in PROMIS PI 0-6 weeks ( P = 0.016). A significant difference in PROMIS PI between high-energy and low-energy injuries was seen at 48 weeks with scores of (58.6 vs. 54.2, P = 0.044).

CONCLUSIONS

After Lisfranc open reduction and internal fixation, patients can expect improvement in PF up to 1 year after surgery, with the biggest improvement in PROMIS PF scores between 6 and 12 weeks and PROMIS PI scores between 0 and 6 weeks after surgery. Regardless the energy type, Lisfranc injuries seem to regain comparable PF by 6-12 months after surgery. However, patients with higher energy Lisfranc injuries should be counseled that these injuries may lead to worse PI at 1 year after surgery as compared with lower energy injuries.

LEVEL OF EVIDENCE

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

Using PROMIS Scores to Provide Cost-Conscious Follow-up After Foot and Ankle Surgery

BACKGROUND

National campaigns in the United States, such as Choosing Wisely, emphasize that decreasing low-value office visits maximizes health care value. Although patient-reported outcomes (PROs) are frequently used to quantify postoperative outcomes, they have not been assessed as a tool to help guide clinicians consider alternatives or discontinue in-person follow-up visits. The purpose of this study is to assess the frequency and cost of in-person follow-up visits after patients report substantial improvement defined as 2 consecutive improvements above preoperative Patient Reported Outcomes Measurement Information System (PROMIS) pain interference (PI) scores.

METHODS

Retrospective PROMIS PI data were obtained between 2015 and 2020 for common elective foot (n = 759) and ankle (n = 578) surgical procedures. Patients were divided into quartiles according to their preoperative PI score. Multivariable Cox proportional hazards models were used to investigate time to substantial improvement. Substantial improvement was defined as having 2 consecutive postoperative minimal clinically important differences (MCIDs) above preoperative PROMIS PI scores. MCID was measured using the distribution-based method. Multivariable negative binomial models were used to determine the number of visits and direct associated costs after substantial improvement. The cost to payors was estimated using reimbursement rates.

RESULTS

Within 3 months, 12% to 46% of foot and 16% to 61% of ankle patients achieved substantial improvement. Results vary by preoperative pain quartile, with patients who report higher preoperative pain scores achieving earlier improvement. After achieving substantial improvement, foot and ankle patients averaged 3.60 and 4.01 follow-up visits during the remaining 9 months of the year. Visit costs averaged $266 and $322 per foot and ankle patient respectively.

CONCLUSION

Postoperative follow-up visits are time-consuming and costly. Physicians might consider objective measures, such as PROMIS PI, to determine the need, timing, and alternatives for in-person follow-up visits for elective foot and ankle surgeries after patients demonstrate reliable clinical improvement.

LEVEL OF EVIDENCE

Level III, retrospective cohort study at a single institution.

A Novel Technique of Medial Displacement Calcaneal Osteotomy Using the Intramedullary Fixation of a Conventional Low-Profile Locking Wedge Plate

BACKGROUND

Postoperative heel pain arising from prominent screw heads is a common complication following medial displacement calcaneal osteotomy (MDCO). This study aims to present the clinicoradiographic outcomes of a novel MDCO technique, wherein intramedullary fixation of a conventional low-profile locking wedge plate is employed.

METHODS

A retrospective analysis, involving a comparison of clinical and radiographic parameters among consecutive patients who underwent MDCO was conducted. The patients were subjected to either intramedullary wedge plate fixation through the osteotomy site (IWPF group, n = 45 cases) or conventional cannulated screw fixation from the heel (CCSF group, n = 51 cases). Radiographic evaluation included measurement of hindfoot alignment angle, alignment ratio, and moment arm. Clinical outcomes were measured with the American Orthopaedic Foot & Ankle Society ankle-hindfoot score, and the Foot and Ankle Ability Measure (FAAM) activities of daily living and sports subscales, before and at 6, 12, and ≥24 months postoperatively. The presence of heel pain was evaluated at the postoperative 6 and 12 months in both groups.

RESULTS

For both groups, a marked enhancement in all 3 radiographic parameters was observed. The extent of correction for all clinicoradiographic parameters demonstrated no statistically significant divergence between the 2 groups. However, the FAAM-Sports scores at the 6-month postoperative juncture exhibited a significant elevation in the IWPF group relative to the CCSF group. Importantly, no patient reported heel pain at postoperative 6 and 12 months in the IWPF group whereas the rates of patients having heel pain at postoperative 6 and 12 months were 56.8% (29 cases) and 33.3% (17 cases), respectively, in the CCSF group.

CONCLUSION

Both techniques yield analogous postoperative clinical and radiographic enhancements. However, the utilization of IWPF promotes a swifter clinical improvement with respect to sports activities when juxtaposed with the CCSF from the calcaneal tuberosity.

LEVEL OF EVIDENCE

Level III, retrospective comparative study.

Peroneus Longus Tendon Autograft May Present a Viable Alternative for Anterior Cruciate Ligament Reconstruction: A Systematic Review

PURPOSE

To examine the available literature to better understand the objective and patient-reported outcomes using peroneus longus tendon (PLT) autograft compared with more commonly used autografts, such as the quadrupled hamstring tendons (HT), in patients undergoing primary for anterior cruciate ligament reconstruction (ACLR).

METHODS

A comprehensive search of published literature in PubMed, Web of Science, Cochrane Library, Ovid, and EMBASE databases was performed according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Inclusion criteria included patients undergoing ACLR with PLT autograft, inclusion of patient-recorded outcome measures, and availability in English language. Publications that included only biomechanical analysis or ACLR with use of allograft or combination grafts were excluded.

RESULTS

A total of 16 studies (Level of Evidence range: I-IV) met inclusion criteria, with follow-up ranging from 3 months to 5 years. In the available case series, patient-reported outcomes ranged from Lysholm = 80.7 to 95.1, International Knee Documentation Committee 78.1 to 95.7. In prospective cohorts and randomized controlled trials, PLT performance was comparable with HT autografts (PLT/HT: Lysholm = 88.3-95.1/86.5-94.9, International Knee Documentation Committee = 78.2-92.5/87.4-93.4). The majority of PLT grafts diameters were equal or greater than HT counterparts with a mean of >8 mm (PLT/HT: 7.0-9.0 mm/7.65-8.5 mm). There was minimal donor-site morbidity associated with PLT harvest.

CONCLUSIONS

Although limitations exist within the available literature, existing evidence suggests that PLT autograft routinely produces adequately sized grafts with comparable early outcomes to HT autograft and low risk of donor-site morbidity. However, the PLT autograft is yet to demonstrate superiority to any of the more-traditional autograft selections.

LEVEL OF EVIDENCE

Level IV, systematic review of Level I-IV studies.

Machine Learning-Based Predictive Models for 90-Day Readmission of Total Joint Arthroplasty Using Comprehensive Electronic Health Records and Patient-Reported Outcome Measures

Background

The Centers for Medicare & Medicaid Services currently incentivizes hospitals to reduce postdischarge adverse events such as unplanned hospital readmissions for patients who underwent total joint arthroplasty (TJA). This study aimed to predict 90-day TJA readmissions from our comprehensive electronic health record data and routinely collected patient-reported outcome measures.

Methods

We retrospectively queried all TJA-related readmissions in our tertiary care center between 2016 and 2019. A total of 104-episode care characteristics and preoperative patient-reported outcome measures were used to develop several machine learning models for prediction performance evaluation and comparison. For interpretability, a logistic regression model was built to investigate the statistical significance, magnitudes, and directions of associations between risk factors and readmission.

Results

Given the significant imbalanced outcome (5.8% of patients were readmitted), our models robustly predicted the outcome, yielding areas under the receiver operating characteristic curves over 0.8, recalls over 0.5, and precisions over 0.5. In addition, the logistic regression model identified risk factors predicting readmission: diabetes, preadmission medication prescriptions (ie, nonsteroidal anti-inflammatory drug, corticosteroid, and narcotic), discharge to a skilled nursing facility, and postdischarge care behaviors within 90 days. Notably, low self-reported confidence to carry out social activities accurately predicted readmission.

Conclusions

A machine learning model can help identify patients who are at substantially increased risk of a readmission after TJA. This finding may allow for health-care providers to increase resources targeting these patients. In addition, a poor response to the "social activities" question may be a useful indicator that predicts a significant increased risk of readmission after TJA.

A Patient-Reported Outcome-Based Comparison of Cheilectomy With and Without Proximal Phalangeal Dorsiflexion Osteotomy for Hallux Rigidus

INTRODUCTION

This study provides the first comparison of patient-reported outcomes between isolated cheilectomy (C) and cheilectomy with Moberg (CM) osteotomy for hallux rigidus.

METHODS

A single-center, retrospective registry search identified all patients with preoperative Patient-Reported Outcomes Measurement Information System (PROMIS) scores who underwent cheilectomy, with and without concomitant proximal phalangeal dorsiflexion osteotomy, for hallux rigidus between January 2016 and December 2020. Because there were far fewer isolated cheilectomies (62), all C patients were compared with a commensurate number of consecutive CM cases (67) using preoperative, 1-year, and 2-year PROMIS scores for physical function, pain interference, pain intensity, global physical health, global mental health, and depression, as well as complication and revision data from a chart review. A multivariable linear regression analysis was performed to compare adjusted postoperative PROMIS scores between the 2 cohorts.

RESULTS

There were no differences between groups among the demographic and preoperative variables compared. The CM cohort reported worse pain interference scores preoperatively (P < .001) and at 1 year postoperatively (P = .01). However, the C cohort reported worse pain intensity scores preoperatively (P < .001) and at 1 year postoperatively (P < .001). Adjusted postoperative PROMIS score comparison demonstrated that the CM cohort had better 1-year postoperative pain intensity scores (P < .05). However, there were no differences between cohorts for additional PROMIS scores or complications data.

CONCLUSION

The addition of a Moberg osteotomy does not appear to significantly change short- to medium-term outcomes of cheilectomy for hallux rigidus treatment.

LEVELS OF EVIDENCE

Level III: Retrospective comparative study.

Comparison of Outcomes at Midterm Follow-up of Operatively and Nonoperatively Treated Isolated Weber B Ankle Fractures

OBJECTIVES

A novel protocol was previously presented for nonoperative management of Weber B (OTA/AO 44B) ankle fractures with criteria of medial clear space <7 mm on gravity stress (GS) radiographs and ipsilateral superior clear space and contralateral GS medial clear space within 2 mm. This study recruited an operative cohort for comparison of outcomes.

METHODS

DESIGN

Retrospective cohort study.

SETTING

Level 1 academic center.

PATIENT SELECTION CRITERIA

The recruited operative cohort consisted of patients who may have been considered for the nonoperative protocol, but underwent surgery instead.

OUTCOME MEASURES AND COMPARISONS

Kellgren-Lawrence scale for evaluation of arthritis, American Orthopedic Foot and Ankle Society Hindfoot, Olerud Molander Ankle, Lower Extremity Functional Scale (LEFS), and PROMIS (physical function, depression, pain interference) scores for the current operative cohort were compared with that of the original nonoperative cohort.

RESULTS

There were 20 patients in the operative cohort and 29 in the original nonoperative cohort. Mean follow-up was 6.9 and 6.7 years, respectively. The following outcome scores were better for the nonoperative cohort compared with the operative, respectively: LEFS, 75.2 and 68.1 ( P = 0.009); Olerud Molander Ankle, 94.1 and 89.0 ( P = 0.05); American Orthopedic Foot and Ankle Society, 98.5 and 91.7 ( P = 0.0003); PROMIS Physical Function, 58.2 and 50.4 ( P = 0.01); PROMIS Pain Interference, 42.2 and 49.7 ( P = 0.004). The PROMIS Depression, 42.8 and 45.4 ( P = 0.29), was not different between groups. All patients achieved union of their fracture. Surgical complications included implant removal (15%), SPN neurapraxia (5%), and delayed wound healing (5%).

CONCLUSIONS

In carefully selected patients with isolated Weber B fractures, nonoperative management may be considered because it can lead to equivalent or superior outcomes with none of the risks typically associated with surgical intervention.

LEVEL OF EVIDENCE

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

What's the clinical significance of VAS, AOFAS, and SF-36 in progressive collapsing foot deformity

BACKGROUND

This study aimed to ascertain the minimal clinically important difference (MCID), and substantial clinical benefit (SCB) of the American Orthopedic Foot and Ankle Society (AOFAS) scale, visual analog scale (VAS) for pain, and Short Form-36 Health Survey (SF-36) in progressive collapsing foot deformity (PCFD) surgery.

METHODS

In this retrospective cohort study, a total of 84 patients with PCFD (84 feet) who underwent surgery between July 2015 and April 2021 were included. The study assessed the patients' subjective perception, as well as their VAS, AOFAS, and SF-36 scores at a minimum two-year follow-up, and these data were subjected to statistical analysis. The study utilized Spearman correlation analysis to determine the degree of correlation between patients' subjective perception and their VAS, AOFAS, and SF-36 scores. The minimal detectable change (MDC), MCID, and SCB for VAS, AOFAS, and SF-36 were calculated using both distribution- and anchor-based methods. The classification outcomes obtained from the distribution- and anchor-based methods were assessed using Cohen's kappa.

RESULTS

Based on the subjective perception of the patients, a total of 84 individuals were categorized into three groups, with 7 in the no improvement group, 14 in the minimum improvement group, and 63 in the substantial improvement group. Spearman's correlation analysis indicated that the patients' subjective perception exhibited a moderate to strong association with VAS, AOFAS, SF-36 PCS, and SF-36 MCS, with all coefficients exceeding 0.4. The MCID of VAS, AOFAS, SF-36 PCS, and SF-36 MCS in PCFD surgery were determined to be 0.93, 5.84, 4.15, and 4.10 points using the distribution-based method and 1.50, 10.50, 8.34, and 3.03 points using the anchor-based method. The SCB of VAS, AOFAS, SF-36 PCS, and SF-36 MCS in PCFD surgery were 2.50, 18.50, 11.88, and 6.34 points, respectively. Moreover, the preliminary internal validation efforts have demonstrated the practical application and clinical utility of these findings. With the exception of the distribution-based MCID of SF-36 PCS, which showed fair agreement, all other measures demonstrated moderate to almost perfect agreement.

CONCLUSIONS

The MDC, MCID, and SCB intuitively enhance the interpretation of VAS, AOFAS, and SF-36 in PCFD surgery, assisting all stakeholders to better understand the therapeutic benefits and limitations of clinical care, and thus to make a more rational decision. Each of these parameters has its own emphasis and complements the others. These parameters are recommended for evaluating the clinical relevance of the results, and their promotion should extend to other areas of foot and ankle surgery.

Isolated Talonavicular Arthrodesis as Treatment for Flexible Progressive Collapsing Foot Deformity: A Case Series

Background

For the younger, more active patient with flexible symptomatic progressive collapsing foot deformity (PCFD), joint-sparing procedures may be preferred to preserve functional motion. Isolated talonavicular (TN) arthrodesis has been described for treatment of rigid and flexible PCFD for patients that are older and less active whose deformity is still correctable through the TN joint. The purpose of this study was to evaluate radiographic and clinical outcomes in patients with PCFD treated with isolated triplanar correction with a TN joint arthrodesis.

Methods

Forty-nine patients (53 feet) with flexible PCFD underwent isolated TN arthrodesis. Weightbearing radiographs were performed pre- and postoperatively, and measurements included lateral talar-first metatarsal angle, calcaneal pitch, TN coverage angle, and the anteroposterior (AP) talar-first metatarsal angle. The Foot and Ankle Ability Measure (FAAM) and Veterans-Rand 12-Item Health Survey (VR-12) scores were also collected.

Results

Thirty-five females and 14 males were evaluated with a mean age of 63 years, at an average follow-up of 41.3 months. Significant improvements were found radiographically. Lateral radiographs demonstrated improvements in lateral talar-first metatarsal angle from 25.2 degrees preoperatively to 9.5 degrees postoperatively (P < .001) and calcaneal pitch from 14.9 degrees preoperatively to 17.5 degrees postoperatively (P < .001). AP radiographs showed the TN coverage angle improving from 35.0 degrees to 4.9 degrees postoperatively (P  < .001) and AP talar-first metatarsal angle improving from 17.3 degrees to 5.9 degrees postoperatively (P < .001). Clinical outcomes were improved in the FAAM pain score (48.6 to 39.2, P = .130), FAAM ADL score (53.8 to 69.2, P = .002), FAAM Sport score (29.5 to 40.7, P = .099), and the overall FAAM score (47.7 to 63.1, P = .006). Patient satisfaction with medical care was 85.2/100 postoperatively.

Conclusion

Isolated TN arthrodesis is a viable surgical option for older, lower-demand patients with flexible PCFD. This study demonstrated significant improvements in radiographic alignment and FAAM scores. Comparative studies with other surgical procedures should be performed to determine which is the best technique for older, lower-demand patients with flexible PCFD.

Level of Evidence

Level III, retrospective cohort study.

Patient-Reported Outcomes Following Open Broström-Gould Procedure: Minimum 5-Year Follow-Up

Background

Ankle sprains are a common musculoskeletal injury among the general population and often involve the lateral ligament complex. Although the majority of ankle sprains are treated successfully with nonsurgical conservative measures, an estimated 5% to 20% of ankle injuries ultimately develop chronic lateral ankle instability (CAI). Multiple surgical treatment modalities for the lateral ankle complex exist, such as anatomical and nonanatomical reconstruction. The current gold standard for primary surgical repair is the Broström-Gould procedure. This is the first article to provide PROMIS scores following BG and the largest study with 5-year outcomes for an open BG.

Methods

This was a descriptive study of a retrospective cohort of patients undergoing a BG with a minimum follow-up of 5 years. Patient-reported outcome instruments collected postoperatively were PROMIS Pain, Physical Function, Depression, and FAAM. Further preoperative clinic characteristics were analyzed to correlate with the final outcome. The electronic medical record was queried for Current Procedural Terminology (CPT) code 27698 (Broström-Gould) from January 2010 to June 2017. Surveys were conducted in the clinic and through phone interviews. Patient charts were reviewed to obtain basic patient demographic information including sex, age, race, and body mass index (BMI). The following preoperative variables were recorded: history of prior CAI procedures, history of major trauma, duration of symptoms, number of diagnosed ankle sprains, other collagen pathologies, generalized ligament laxity, participation in sports/activity level, peroneal subluxation, clinically diagnosed peroneus longus or brevis tendinopathy, deltoid ligament injury, anterior ankle impingement, and posterior ankle impingement. The PROMIS and Foot and Ankle Ability Measure (FAAM) scores were obtained with a combination of clinic and phone interviews. Data were aggregated in Microsoft Excel and entered in R (version 4.2.0) for statistical analysis.

Results

Our results show that the minimum 5-year patient-reported PROMIS scores for patients following a Broström-Gould procedure are as follows: PROMIS physical function, 50.5; PROMIS pain interference, 48.2; and PROMIS depression, 38.2. This indicates, at a minimum, that patients 5 years removed from the procedure are within 1 SD of the general population in regard to PROMIS physical function and pain. Our patient-reported FAAM, activities of daily living, and FAAM sports scores were 59.6 and 13.0 respectively. Preoperative magnetic resonance imaging (MRI) findings were recorded. Arthroscopic examination was performed before lateral ligaments reconstruction for patients with intra-articular pathologies confirmed on MRI.

Conclusion

The findings from our study offer evidence supporting the effectiveness of the Broström-Gould procedure to be associated with normal physical function, even 5 years after surgery. Furthermore, our research identified specific factors such as tobacco use, diabetes, and sports participation that independently correlated with reported outcome measures. These insights enable physicians to better manage patient expectations and tailor treatment strategies accordingly. Our study establishes a foundation for future prospective research endeavors that aim to leverage the PROMIS system for comprehensive outcome assessments.

Level of Evidence

Level III, retrospective cohort study.

Survival and risk assessment in revision arthroplasty of the ankle

Aims

Implant failure has become more common as the number of primary total ankle arthroplasties (TAAs) performed has increased. Although revision arthroplasty has gained attention for functional preservation, the long-term results remain unclear. This study aimed to assess the long-term outcomes of revision TAA using a mobile-bearing prosthesis in a considerably large cohort; the risk factors for failure were also determined.

Methods

This single-centre retrospective cohort study included 116 patients (117 ankles) who underwent revision TAA for failed primary TAA between July 2000 and March 2010. Survival analysis and risk factor assessment were performed, and clinical performance and patient satisfaction were evaluated preoperatively and at last follow-up.

Results

The mean duration from initial revision TAA to last follow-up was 15.0 years (SD 3.0; 11.2 to 20.5). The cumulative survival rates of the revised ankles were 81% (95% confidence interval (CI) 74% to 88%), 74% (65% to 82%), and 70% (61% to 79%) at five, ten, and 15 years, respectively. Comorbidities prior to primary TAA, aseptic loosening, instability, or grafting of cysts were found to be the most common risk factors for secondary revision. The median value for preoperative pain, as assessed using the visual analogue scale, declined from 6 (interquartile range (IQR) 5 to 8) to 2 (IQR 0 to 5) (p < 0.001) and the mean American Orthopaedic Foot and Ankle Society ankle-hindfoot score improved from 43 (SD 17) preoperatively to 70 (SD 20) (p < 0.001) at last follow-up.

Conclusion

Revision TAA offers acceptable survival rates after 15 years; it therefore offers a valuable option for treatment of implant failure in carefully selected cases. Although patient-reported outcomes improve substantially, the degree of improvement reported following primary TAA is not achieved.

Arthroscopic all-inside ligament repair has similar or superior clinical outcomes compared to open repair for chronic ankle instability without concomitant intra-articular pathology at 5 years follow-up

PURPOSE

Open ligament repair is widely considered the gold standard treatment for chronic ankle instability. Nevertheless, arthroscopic treatment of ankle instability has gained popularity becoming the preferred technique for many surgeons. This study aimed to compare the clinical outcomes of all-inside arthroscopic versus open lateral ligament repair for chronic ankle instability at 5 years follow-up.

METHODS

Ninety consecutive patients were surgically treated for chronic ankle instability without concomitant intra-articular pathology observed on MRI: 41 patients [median age 28 (range 15-54) years] underwent an open lateral ligament repair (OLR); 49 patients [median age 30 (range 19-47) years] underwent an all-inside arthroscopic ligament repair (ALR). Functional outcomes using the Foot Functional Index (FFI), the American Orthopaedic Foot and Ankle Society (AOFAS) Hindfoot Score, and the Foot and Ankle Ability Measure-Sports Subscale (FAAM-SS) were assessed preoperatively and at the latest follow-up. At the latest follow-up, the satisfaction rate and complications were also recorded.

RESULTS

The mean follow-up was 58 ± 17.6 (range 47-81) months. In both groups FFI, AOFAS and FAAM-SS score significantly improved compared to preoperative values (p < 0.001). There was no statistically significant difference in postoperative outcomes between groups in the AOFAS (n.s) and FAAM-SS (n.s), but the FFI results were significantly better in the ALR group (p < 0.05). No major complications were reported in either group.

CONCLUSION

Open and arthroscopic ligament repair to treat chronic ankle instability without concomitant intra-articular pathology produced excellent comparable clinical outcomes at 5 years follow-up. The complications were minimal in both study groups with no significant differences in AOFAS and FAAM-SS scores. However, arthroscopic repair showed significantly better results on the FFI. Therefore, when treating chronic lateral ankle instability, surgeons should consider arthroscopic ligament repair.

LEVEL OF EVIDENCE

III.

A Novel Plating System for First Metatarsophalangeal Joint Arthrodesis: A Retrospective Comparison of Hybrid and Traditional Locking Plate Constructs

BACKGROUND

Dorsal plate fixation is commonly used for first metatarsophalangeal joint (1st MTPJ) arthrodesis and plate design continues to evolve. A new staple compression plate (SCP) design attempts to utilize the continuous compression of a nitinol staple across the fusion site while simultaneously providing the stability of a dorsal locked plate. Herein, we compare the radiographic, clinical, and patient-reported outcomes of 1st MTPJ joint arthrodesis using 2 dorsal locking plate constructs including a novel SCP construct.

METHODS

Forty-four patients who underwent 1st MTPJ arthrodesis between 2016 and 2020 were retrospectively evaluated. There were 2 group cohorts. Group 1 cohort included 23 patients who received a CrossRoads Extremity SCP, and Group 2 cohort included 21 patients who received a Stryker dorsal locking precontoured titanium plate (LPP). All patients were evaluated with radiographs, Patient-Reported Outcomes Measures Information System (PROMIS) outcome scores, and Foot Function Index (FFI).

RESULTS

The complication and union rates did not vary between groups with a fusion rate of 95.7% in the SCP group and 90.5 % in the LPP group. Similarly, we found no significant differences in PROMIS or FFI scores between the SCP and LPP plates.

CONCLUSION

Use of either dorsal locking plate construct for 1st MTPJ arthrodesis was associated with high union rates and comparable functional outcomes. As locked plate technology continues to evolve for 1st MTPJ arthrodesis, it is important that clinical outcomes are reported.

LEVELS OF EVIDENCE

Level IV.

Pearls and pitfalls of PROMIS clinically significant outcomes in orthopaedic surgery

INTRODUCTION

Patient-Reported Outcome Measurement Information System (PROMIS) was developed as a uniform and generalizable PROM system using item response theory and computer adaptive testing. We aimed to assess the utilization of PROMIS for clinically significant outcomes (CSOs) measurements and provide insights into its use in orthopaedic research.

MATERIALS AND METHODS

We reviewed PROMIS CSO reports for orthopaedic procedures via PubMed, Cochrane Library, Embase, CINAHL, and Web of Science from inception to 2022, excluding abstracts and missing measurements. Bias was assessed using the Newcastle-Ottawa Scale (NOS) and questionnaire compliance. PROMIS domains, CSO measures, and study populations were described. A meta-analysis compared distribution and anchor-based MCIDs in low-bias (NOS ≥ 7) studies.

RESULTS

Overall, 54 publications from 2016 to 2022 were reviewed. PROMIS CSO studies were observational with increasing publication rates. Evidence-level was II in 10/54, bias low in 51/54, and compliance ≥ 86% in 46/54. Most (28/54) analysed lower extremity procedures. PROMIS domains examined Pain Function (PF) in 44/54, Pain Interference (PI) in 36/54, and Depression (D) in 18/54. Minimal clinically important difference (MCID) was reported in 51/54 and calculated based on distribution in 39/51 and anchor in 29/51. Patient acceptable symptom state (PASS), substantial clinical benefit (SCB), and minimal detectable change (MDC) were reported in ≤ 10/54. MCIDs were not significantly greater than MDCs. Anchor-based MCIDs were greater than distribution based MCIDs (standardized mean difference = 0.44, p < 0.001).

CONCLUSIONS

PROMIS CSOs are increasingly utilized, especially for lower extremity procedures assessing the PF, PI, and D domains using distribution-based MCID. Using more conservative anchor-based MCIDs and reporting MDCs may strengthen results. Researchers should consider unique pearls and pitfalls when assessing PROMIS CSOs.

Greek Cross-Cultural Adaptation, Reliability, and Validity of the Quick Foot and Ankle Ability Measure Questionnaire

CONTEXT

An easy-to-administer, function-based questionnaire to assess patients with various foot problems was required for a Greek-speaking population. This study aimed to translate and cross-culturally adapt the Quick Foot and Ankle Ability Measure (Quick-FAAM) into Greek and evaluate its reliability and validity.

DESIGN

Cross-sectional study.

METHODS

Established international guidelines for the cross-cultural adaptation of questionnaires were followed. The face and content validity of the Greek version of the Quick-FAAM (Quick-FAAM-GR), as well as the internal consistency and test-retest reliability upon repeated administration after 5 days, were examined. In addition, the construct validity of the scale was examined via exploratory factor analysis as well as by testing for associations with the Manchester Foot Pain and Disability Index, the 12-item Short-Form Survey (version 2), and a functional balance assessment test-the Y-Balance Test.

RESULTS

Sixty participants (18 women) with self-reported chronic ankle instability symptoms, with a median (interquartile range) age of 27 (7.7) years, participated in the study. Half of the participants were included in the test-retest reliability study. The Quick-FAAM-GR demonstrated face and content validity. Excellent internal consistency (Cronbach α = .961) and intrarater test-retest reliability (intraclass correlation coefficient ICC[2,1] = .93) were demonstrated, with a comparable error margin to the original version (standard error of the measurement = 2.1, 95% minimum detectable change = 5.9). Associations of the Quick-FAAM-GR scores to other questionnaires ranged from weak to strong (Spearman rho), all being statistically significant (Manchester Foot Pain and Disability Index from -.26, P = .04, to -.67, P < .001, and 12-item Short-Form Survey, version 2, between .41 and .72, P < .001), and to the Y-Balance Test between lower-limb differences (-.35 to -.58, P < .001). The exploratory factor analysis confirmed the single-factor structure of this scale. No floor/ceiling effects were observed.

CONCLUSIONS

The Greek Quick-FAAM has proven to be a valid and reliable tool for evaluating chronic ankle instability and can be used for clinical and research purposes in Greek-speaking individuals.

Early outcomes of the Exactech Vantage fixed-bearing total ankle replacement

Aims

The Vantage Total Ankle System is a fourth-generation low-profile fixed-bearing implant that has been available since 2016. We aimed to describe our early experience with this implant.

Methods

This is a single-centre retrospective review of patients who underwent primary total ankle arthroplasty (TAA) with a Vantage implant between November 2017 and February 2020, with a minimum of two years' follow-up. Four surgeons contributed patients. The primary outcome was reoperation and revision rate of the Vantage implant at two years. Secondary outcomes included radiological alignment, peri-implant complications, and pre- and postoperative patient-reported outcomes.

Results

There were 168 patients (171 ankles) included with a mean follow-up of 2.81 years (2 to 4.6) and mean age of 63.0 years (SD 9.4). Of the ten ankles with implant failure (5.8%), six had loosening of the tibial component. In the remaining four failed implants, one was due to periprosthetic joint infection (PJI), one was due to loosening of the talar component, and two were due to loosening of both the tibial and talar components. Seven patients underwent reoperation: irrigation and debridement for superficial infection (n = 4); bone grafting for cysts (n = 2); and open reduction internal fixation (n = 1). Asymptomatic peri-implant lucency/subsidence occurred in 20.1% of ankles, with the majority involving the tibial component (n = 25). There were statistically significant improvements in PROMs in all domains.

Conclusion

Short-term results of this implant demonstrate early survival comparable to the reported survivorship of similar low-profile, non-stemmed implants. Radiological lucency occurred more commonly at the tibial component, and revisions occurred primarily due to loosening of the tibial component. Further research is needed to evaluate longer-term survivorship.

From numbers to meaningful change: Minimal important change by using PROMIS in a cohort of fracture patients

INTRODUCTION

use of the Patient-Reported Outcomes measurement Information System (PROMIS®) is slowly increasing in patients with a fracture. Yet, minimal important change of PROMIS in patients with fractures has been addressed in a very limited number of studies. As the minimal important change (MIC) is important to interpret PROMIS-scores, the goal is to estimate the MIC for PROMIS physical function (PF), PROMIS pain interference (PI) and PROMIS ability to participate in social roles and activities (APSRA) in patients with a fracture. Secondly, the smallest detectable change was determined.

MATERIALS AND METHODS

A longitudinal cohort study on patients ≥ 18 years receiving surgical or non-surgical care for fractures was conducted. Patients completed PROMIS PF V1.1, PROMIS PI V1.1 and PROMIS APSRA V2.0. For follow-up, patients completed three additional anchor questions evaluating patient-reported improvement on a seven point rating scale. The predictive modeling method was used to estimate the MIC value of all three PROMIS questionnaires.

RESULTS

Hundred patients with a mean age of 55.4 ± 12.6 years were included of which sixty (60%) were female. Seventy-two (72%) patients were recovering from a surgical procedure. PROMIS-CAT T-scores of all PROMIS measures showed significant correlations with their anchor questions. The predictive modeling method showed a MIC value of +2.4 (n = 98) for PROMIS PF, -2.9 (n = 96) for PROMIS PI and +3.2 (n = 91) for PROMIS APSRA.

CONCLUSION

By using the anchor based predictive modeling method, PROMIS MIC-values for improvement of respectively +2.4 points on a T-score metric for PROMIS-PF, -2.9 for PROMIS-PI and +3.2 for PROMIS APSRA give the impression of being meaningful to patients. These values can be used in clinical practice for managing patient expectations; to inform on treatment results; and to assess if patients experience significant change. This in order to encourage patient centered care.

Determining the clinical significance of the PROMIS physical function score in the setting of femur fractures

BACKGROUND

To adequately utilize patient reported outcome scores in the clinical setting, accurate determination of a cohort-specific minimal clinically important differences (MCID) is necessary. The purpose of this study was to assess MCID for Patient Reported Outcome Information System Physical Function Scores (PROMIS®) Physical Function (PF) in a sample of patients who have undergone operative fixation for femur fractures.

METHODS

All patients at a single Level 1 trauma center who were treated for operative femur fractures were identified by Current Procedural Terminology (CPT) codes (27,244, 27,245, 27,506, 27,507). PROMIS PF was collected as part of routine clinical care via computer adaptive testing (CAT). MCID calculations were performed using both anchor-based and distribution-based methods.

RESULTS

A total of 182 patients with 723 score observations were included in the overall distribution-based analysis and 131 patients with 309 score observations were included in the anchor-based analysis. In the overall cohort, the average age was 53.1 (SD 22.3), and 45% of participants were female. MCID for PROMIS PF scores was 5.43 in the distribution-based method and 5.18 in the anchor-based method. Overall scores in the distribution group improved from mean of 27.4 (SD 7.0) at the first postoperative visit to a mean of 36.7 (SD 10.0) at a subsequent follow up visit. Overall scores in the anchor group improved from mean of 26.7 (SD 7.3) at the first postoperative visit to a mean of 37.5 (SD 9.3) at a subsequent follow up visit.

CONCLUSIONS

This study identifies two MCID values (5.18, 5.43) based on two calculation methods for PROMIS physical function scores in the operative femur fracture population. This data could be helpful in targeting postoperative patients who fall below expected norms or in allowing clinical correlation with changes in surgical practice.

Validation of the Foot and Ankle Outcome Score (FAOS) for Osteochondral Lesions of the Ankle

BACKGROUND

The purpose of this study was to validate the Foot and Ankle Outcome Score (FAOS) for osteochondral lesions of the talus (OLTs). We hypothesize that the FAOS will meet all 4 psychometric criteria for validity in this patient population.

METHODS

From 2008 to 2014, a total of 208 patients with OLTs were included in the construct validity portion of the study. All patients completed FAOS and 12-Item Short-Form Health Survey (SF-12) scores. Twenty additional patients were prospectively recruited and were asked to complete questionnaires to determine the relevance of each of the FAOS questions as it related to their OLT. Forty-four patients completed the FAOS 1 month after the first FAOS to assess reliability via Spearman correlation coefficient. Responsiveness of the FAOS was assessed with 54 patients who had both preoperative and postoperative FAOS scores via Student paired t test with significance determined as P < .05. In total, 229 unique patients were included in this study.

RESULTS

Statistically significant associations were found between all FAOS and SF-12 subscales (P < .01). The FAOS symptoms subscale demonstrated the lowest correlation with the SF-12 physical health domains. No floor or ceiling effects were identified. Weak correlations were calculated between the 5 FAOS subscales and the SF-12 mental component summary score. All FAOS domains met the threshold for acceptable content validity (score > 2.0). All FAOS subscales demonstrated acceptable test-retest reliability, with ICC values ranging from 0.81 (ADL) to 0.92 (Pain).

CONCLUSION

This study demonstrates the acceptable yet moderate construct and content validity, reliability, and responsiveness of the FAOS for patients with OLTs of the ankle joint. We endorse the use of the FAOS in evaluating ankle OLTs in both the research and clinical setting and consider it a useful patient-reported, self-administered instrument following surgical intervention.

LEVEL OF EVIDENCE

Level IV, retrospective case study.