Comparison of primary total hip replacements performed with a direct anterior approach versus the standard lateral approach: perioperative findings

Transition from straight lateral to direct anterior approach in total hip arthroplasty: a retrospective single-centre study

INTRODUCTION

The muscle-sparing direct anterior approach (DAA) for total hip arthroplasty (THA) has gained popularity for reduced postoperative pain and faster rehabilitation. The aim of this study was to evaluate the potential benefits of transitioning from straight lateral approach (SLA) THA to DAA THA, and investigate whether these benefits outweigh potential disadvantages of the DAA learning curve.

METHOD

Patients undergoing surgery between 2015 and 2020 (n = 2275) were categorised into three periods: pre-transition period (2015-2016) utilizing SLA exclusively, transition period (2017-2018) incorporating both SLA and DAA, and post-transition period (2019-2020) employing only DAA. The Hip disability and Osteoarthritis Outcome Score - Physical function Short-form (HOOS-PS) was recorded pre-surgery and one-year post-surgery. Furthermore, complications, blood loss, duration of surgery and length of stay were compared between groups.

RESULTS

A larger improvement in HOOS-PS score was found for DAA in comparison with SLA (37.13 ± 18.62 vs. 32.55 ± 22.83; p < 0.001). Significant improvements were found for the DAA group regarding duration of surgery (70:02 ± 15:54 min vs. 79:47 ± 15:03 min; p < 0,001) and length of stay (1.68 ± 1.80 days vs. 3.39 ± 1.85 days; p < 0,001) compared to the SLA group. Total number of complications was higher for SLA (n = 87 (9.2%)) compared to DAA (n = 77 (6.5%); p = 0.018), with more femoral fractures for SLA (n = 35 (3.7%) vs. n = 6 (0.5%); p < 0.001) whereas more dislocations were found for DAA (n = 24 (2.0)% vs. n = 7 (0.7%); p = 0.017). More specifically, a higher number of dislocations occurred during the DAA transition period when compared to the SLA pre-transition period (n = 12 (2.7%) vs. n = 4 (0.6%); p = 0.008).

CONCLUSIONS

Transitioning from SLA to DAA for THA improves patient-reported outcomes but does not seem to result in a higher overall complication rate. Suggesting the advantages of the DAA outweigh the potential disadvantages of the learning curve.

Enhancing recovery: surgical techniques and rehabilitation strategies after direct anterior hip arthroplasty

Total hip arthroplasty (THA) is a common surgical procedure for hip joint pathologies, with the direct anterior approach (DAA) gaining popularity due to potential benefits in postoperative recovery. This review aims to provide a comprehensive analysis of rehabilitation strategies following DAA THA, focusing on surgical techniques, postoperative care, and outcomes. The evolution of the DAA to THA is discussed, highlighting historical advancements and comparisons with other surgical approaches. Surgical techniques and considerations specific to the DAA are detailed, including outcomes and complications compared to alternative approaches. The role of the surgical technique in influencing postoperative rehabilitation is explored, emphasizing the importance of optimizing surgical procedures for enhanced recovery. Postoperative care and rehabilitation models following DAA THA are examined, with a focus on the impacts of different rehabilitation protocols on patient outcomes. The review underscores the significance of tailored rehabilitation programs in promoting optimal recovery and patient satisfaction. Current evidence from recent studies, meta-analyses, and clinical trials is critically analyzed to provide insights into the effectiveness of postoperative rehabilitation strategies. The review identifies gaps in the existing literature and proposes recommendations for future research to improve rehabilitation protocols and enhance outcomes. In conclusion, this review highlights the importance of postoperative rehabilitation in the context of DAA THA. By synthesizing historical perspectives, current evidence, and future directions, the review offers a comprehensive understanding of rehabilitation strategies following DAA THA. The findings underscore the need for personalized rehabilitation programs and ongoing research to optimize postoperative recovery and improve outcomes in the field of THA.

"Heterotopic ossification after total hip arthroplasty through direct anterior approach without a dedicated orthopaedic table or direct lateral approach: a quasi-randomized single-center study"

INTRODUCTION

Heterotopic ossifications (HO) are common after total hip arthroplasty (THA). The invasiveness of surgical approaches plays a relevant role in HO development. The aims of this study were to assess the development of HO 6 months after THA through direct lateral approach (DLA) or direct anterior approach (DAA) without a dedicated orthopaedic table and to assess the clinical impact of HO.

METHODS

This is a single-center IRB-approved, quasi-randomized prospective cohort, observational imaging study. Fifty patients underwent primary THA through DLA and 50 through DAA. Age, sex, BMI and side of the affected hip were collected. At the 6 post-operative month the Harris Hip Score (HHS) and the presence of HO (scored through the Brooker classification system) were assessed.

RESULTS

There was no significant difference in the demographic data between groups. Operative time was significantly higher in the DAA group (72 ± 10 min vs. 58 ± 8 min: p < 0.03). At 6 post-operative months the incidence of HO was 14% in the DAA group and 32% in the DLA group (p = 0.02). Severe HO (Brooker 3-4) were significantly more common in the DLA group (p = 0.04). There was no significant difference in the HHS of patients with HO between the DAA and DLA groups. There was no association between poorer clinical outcomes and the severity of HO.

CONCLUSION

The DAA without a dedicated orthopaedic table is associated with a significant lower incidence of HO than the DLA 6 months after elective THA. Except for the surgical approach, no other factors correlated with the occurrence of HO. Even though a lower HHS was found with severe HO, the correlation between severity of HO and clinical outcomes did not reach statistical significance.

The Posterior Approach is Associated With Lower Total Encounter and 90-Day Costs When Compared to the Direct Anterior Approach

BACKGROUND

The clinical impact of the surgical approach in total hip arthroplasty (THA) has been widely reviewed. This study evaluated the total encounter and 90-day costs of THA for 2 surgical approaches (posterior [P] and direct anterior [DA]) in 1 tertiary health system.

METHODS

This is a retrospective review of 2,101 THAs (1,092 P and 1,009 DA) by 4 surgeons (2 with the highest volume of DA and P, respectively) from 2017 to 2022 at 1 academic center. Demographics, comorbidities, operative time, length of hospital stay, 90-day hospital returns, and complications were compared. The total encounter cost and 90-day postoperative cost were itemized. Multivariable regression analyses evaluated associations with increased cost at each time point.

RESULTS

The DA cohort had a higher median encounter cost ($8,348.66 versus 7,332.42, P < .01), resulting from higher intraoperative (P < .01) and radiology (P < .01) expenses. Regression analyses demonstrated the DA was independently associated with increased encounter costs (odds ratio 1.1; 95% confidence interval 1.1 to 1.1; P < .01). There was a higher incidence of 90-day emergency department visits in the DA cohort (16 versus 12%, P = .02), with a trend toward increased readmissions. There was no difference in 90-day reoperations. Median 90-day cost was higher in the DA cohort ($126.99 versus 0.00, P < .01), and regression analyses demonstrated the DA had an association with increased 90-day cost (odds ratio 2.2; 95% confidence interval 1.5 to 3.0; P < .01).

CONCLUSIONS

Despite a younger patient population, the DA was independently associated with increased encounter and 90-day costs in a single academic hospital system. This study may underestimate the cost difference, as capital costs such as specialized tables were not analyzed.

Sport and sexual recovery after total hip arthroplasty in young adults: a retrospective cohort study

INTRODUCTION

Total Hip Arthroplasty (THA) is the main treatment for end-stage degenerative hip arthrosis in the elderly, while became increasingly performed as treatment of secondary arthrosis in younger patients, a population at high functional requests in terms of resumption of physical activity and resumption of sexual activity. This study evaluates the physical, sports recovery and the sexual quality of life in young patients undergoing primary THA.

MATERIALS AND METHODS

Patients undergoing primary THA aged between 18 and 45, operated in a 10 year timeframe, were selected. Demographic, clinical, and radiological data were collected. The Harris Hip Score (HHS) was assessed before and after the surgery. The UCLA Activity Score was collected, sport participation in pre and post-operative period was acquired. The quality of sexual activity (SQoL) before and after surgery was analysed through a qualitative questionnaire. Collected data were also compared on the surgical approach, namely Direct Anterior (DAA), Postero-Lateral (PL) and Direct lateral (DL).

RESULTS

The population consisted of 242 THA implanted in 232 patients, including 143 males and 89 females, with an average age of 37.4. The mean follow-up period was 51.0 months, with a minimum of 2.9 months and a maximum of 122.6 months. Postoperatively, the average HHS was 90.29 ± 0.9 points, compared to 62.43 ± 1.34 points preoperatively (p < 0.001). The UCLA Activity Score in the postoperative period was 7.17 ± 0.17 matching to intermediate impact sport activity. The 64% of patients reported an improvement in SQoL after-surgery, 73% of which being females that show a significant improvement in SQoL compared to males (p = 0.046). By surgical approach comparison, DAA patients demonstrated better UCLA Activity Score (p = 0.037) and Return to sport (p = 0.027) compared to PL and DL.

CONCLUSION

Primary THA surgery in young adults can improve the level of physical activity and promote the involvement of subjects in moderate impact sports. Patients showed a better quality of sexual life compared to the preoperative period, an effect more evident in female patients.

A Cost Analysis of Surgical Approach in Total Hip Arthroplasty

BACKGROUND

With pressures to decrease the financial burden of total hip arthroplasty (THA), it is imperative to understand the cost drivers of this procedure. This study evaluated operative and total encounter costs for two surgical approaches to THA-posterior (P) and direct anterior (DA).

MATERIALS AND METHODS

A total of 233 THAs (134 P and 99 DA) performed by two fellowship-trained arthroplasty surgeons from 2017 to 2022 were reviewed. Demographics, comorbidities, mobility status, operative time, length of stay, implants used, discharge location, and complications until final follow-up were recorded. Total encounter cost was collected and itemized. Multivariable regression analyses evaluated predictors of cost.

RESULTS

There were differences in age (67 years for DA and 63 years for P; P=.03), body mass index (28.0 kg/m2 for DA and 33.8 kg/m2 for P; P<.01), Elixhauser Comorbidity Index score (4.6 for DA and 5.6 for P; P=.04), and operative time (2.1 hours for DA and 1.9 hours for P; P<.01) between the two cohorts. The DA cohort trended toward shorter length of stay, with the highest percentage of patients discharged home (86.9%; P=.02). The P cohort had the lowest encounter ($9601 for DA and $9100 for P; P=.20) and intraoperative (including implant used) ($7268 for DA and $6792 for P; P<.01) costs. The DA cohort had a significantly higher cost of radiology during the encounter ($244; P<.01). Regression analysis demonstrated that length of stay and DA approach were both predictors of increased encounter cost.

CONCLUSION

The DA cohort had improved measures of health; however, this approach was associated with a higher operative cost and was predictive of increased encounter cost despite a shorter length of stay. [Orthopedics. 2024;47(3):e151-e156.].

Mid-term results of cemented hip arthroplasties through the direct anterior approach in the lateral decubitus position: a retrospective cohort study

BACKGROUND

Reports show a high complication rate when starting with the Direct Anterior Approach (DAA) in a supine position for hip arthroplasty. The DAA with the patient in lateral decubitus position may avoid this problem because it supposedly provides better visibility, especially on the femoral side. However, this approach did show a rather high complication rate during the adoption of the approach at 1 year follow up in our previous report. We were interested what the overall 7 year survival estimate would be and whether improvement could be seen with growing experience.

METHODS

A cohort of patients undergoing total hip arthroplasty right from the start of applying the DAA in lateral decubitus position was analysed.

RESULTS

In total 175 hip prostheses (162 patients) were evaluated. The 7-year survival estimate was 95.1%, 95 CI: 91.8-98.4%. In 6 of 8 revisions there was aseptic loosening of the stem. By dividing the cohort into 3 consecutive groups in time we did not see a significantly improving revision rate.

CONCLUSIONS

In our experience, the adoption of the direct anterior approach in lateral decubitus position caused a relatively low 7-year survival estimate without an apparent decrease with growing experience, however given the low number of cases further research is needed to investigate the long-term risk of adopting a new approach.

Stepwise implementation of an enhanced recovery pathway for elective total hip arthroplasty in a Swiss hospital: a cohort study

BACKGROUND

Enhanced recovery programs after total hip arthroplasty have been shown to reduce hospital length of stay without compromising results, but yet there is a lack of data for the Swiss population. Therefore, this retrospective cohort study evaluated whether similar positive effects on clinical outcomes are present in the context of the Swiss healthcare system.

METHODS

Patients who underwent elective primary total hip arthroplasty were analysed. The baseline group comprised 50 patients treated consecutively by one surgeon in 2013 according to the clinical practice guidelines. Another surgeon implemented a new standardised treatment protocol in April 2014. In January 2018, this protocol was followed by an enhanced recovery program that integrated all care providers at the hospital. The data of the baseline group (series 0) and four series of 50 patients each, two treated with the standardised treatment protocol (series 1-2) and two treated with the enhanced recovery program (series 3-4), were analysed. All patients had follow-ups at 6 weeks and 3 months after surgery. The primary outcomes were length of stay and discharge destination; the secondary outcomes were admission on the day of surgery (instead of one day prior), the use of urinary catheters, the administration of opioids, the difference between pre- and postoperative haemoglobin, blood transfusions, and adverse events within 3 months of surgery.

RESULTS

The median length of stay was 10 days in the baseline group and only 5 days after the implementation of the standardised protocol and enhanced recovery program in series 4 (p <0.001). The percentage of patients discharged directly home was higher in series 4 than in the baseline group (84% vs. 66%, p = 0.085). Patients admitted to the hospital on the day of surgery increased from 2% in series 0 to 98% in series 4 (p <0.001). The use of urinary catheters was significantly higher in the baseline group (100% of patients) than in series 3 and 4 (0%) (p <0.001), and the number of patients who did not require opioids was significantly higher in series 4 than in series 0 (36% vs. 10%, p = 0.007). The median blood loss (500 ml vs. 300 ml, p <0.001), median difference in pre- and postoperative haemoglobin (29 g/dl vs. 25 g/dl, p = 0.145), and number of blood transfusions (5 vs. 2 p = 0.99) were higher in the baseline group than in series 4. The number of adverse events did not differ significantly between groups (p = 0.699).

CONCLUSIONS

Almost all parameters examined in this study showed improvement, whereas the rate of adverse events was not affected and remained low. The presented data can be used as a benchmark, but details of these findings need to be confirmed in larger cohorts.

The distribution of pressure forces of the foot on the ground during gait in patients with hip osteoarthritis

BACKGROUND

Hip osteoarthritis is a major civilizational challenge of the ageing population, usually due to the reduced function of gait. In the light of this fact, gait analysis has become an important issue for the doctor, the physiotherapist and the patient, as it serves as a useful tool in diagnosis, recovery, and rehabilitation. Pedobarography is one of the most modern gait analysis methods.

OBJECTIVE

The aim of this study is to assess the distribution of pressure forces of the foot on the ground during gait in patients with hip osteoarthritis.

METHODS

Dynamic foot tests were performed by means of a two-meter RSscan® International platform, equipped with 16.384 sensors with the scanning frequency level exceeding 500 Hz. Patients were divided into two groups: the research group of N= 60 individuals with hip osteoarthritis, aged 52-84; and the control group of N= 32 individuals without hip osteoarthritis, aged 50-74. Data distribution analysis was performed with the Shapiro-Wilk test, followed by a non-parametric Mann-Whitney U test.

RESULTS

The differences between the mean results of maximal peak values of pressure and force in such areas as the big toe, metatarsal I, III, IV, V, lateral and medial heel are significantly lower in the research group than in the control group. Only in the area of metatarsal II, the mean value of pressure is higher in the research group than in the control group. For all metatarsals, the midfoot and medial heel mean results of the contact area are significantly higher in the research group than in the control group. The differences between mean load rate were also tested. The test revealed statistical significance of metatarsal II and III, and the medial heel while metatarsal II displayed a higher mean value in the research group than in the control group.

CONCLUSION

The distribution of the pressure forces of the foot can indicate imbalances which cause degenerative changes. Therefore, early detection of changes can help in prevention or delay of hip osteoarthritis in conjunction with proper therapy.

Which patient benefit most from minimally invasive direct anterior approach total hip arthroplasty in terms of perioperative blood loss? A retrospective comparative study from a cohort of patients with primary degenerative hips

INTRODUCTION

Total hip arthroplasty (THA) is a successful surgery, but despite the advancements in anesthesiology and orthopedics, sometimes blood transfusions are required to manage the anemia due to the blood loss, involving a substantial number of patients. The aim of this retrospective comparative study is to define how the choice of the surgical approach, either direct anterior (DA) or posterolateral (PL), may influence the postoperative blood loss and the need for transfusion in THA.

MATERIALS AND METHODS

Data collection was carried out retrospectively of THAs performed between 2016 and 2021 on primary hip osteoarthritis treated by DA or with PL approach. Clinical and perioperative anesthetic data were collected. Preoperative hemoglobin levels were compared with the lowest detected level by calculating ΔHb (hemoglobin decrease). Then, data from the two groups were cross-checked: duration of surgery, whether premedication with tranexamic acid, duration of the hospitalization, rate of need for hemotransfusions, and amount of blood transfused. The two samples were subdivided into subgroups according to age, BMI, tranexamic acid prophylaxis, and chronic treatment with drugs that alter coagulative properties.

RESULTS

Time of surgery was longer for patients treated with DA access (mean DA: 78.8 min; mean PL: 74.8 min; p: 0.05; 95% CI), but the length of hospitalization was shorter for patients treated with DA group with a mean time of 6.23 days versus 7.12 days for the PL group (p < 0.01). DA THA resulted advantageous mainly in patients between 66 and 75 years, showing a reduced postoperative transfusion requirement in the postoperative period (DA: 13.43%-mean: 1.33 units; PL: 26.82%-mean: 1.18 units; p: 0.044, 95% CI). Patients that assume blood-altering drugs showed a higher transfusion rate (p < 0.01), but comparison of the two subgroups showed that the choice of the surgical approach did not significantly affect the transfusion rate in these patients (p: 0.512). Prophylaxis with tranexamic acid reduced the transfusion rate (p < 0.01).

CONCLUSION

Patients treated by minimally invasive direct anterior approach undergo a significantly shorter hospitalization. From the analysis of patient's subgroups those aged between 66- and 75-years benefit from the DA approach mainly for the minor blood loss with less frequent transfusion requirement.

In primary total hip arthroplasty, the direct anterior approach leads to higher levels of creatine kinase and lower levels of C-reactive protein compared to the posterolateral approach: a propensity score matching analysis of short-term follow-up data

BACKGROUND

This retrospective study compares the invasiveness of the direct anterior approach (DAA) and the posterolateral approach (PLA) in total hip arthroplasty (THA) by assessing three widely used inflammation-related serum markers in the first ten post-operative days.

METHODS

The database of our institution was mined for primary THAs conducted by the DAA or the PLA from February 2020 to June 2022. Demographics and creatine kinase (CK), C-reactive protein (CRP), and white blood cells were compared. Propensity Score Matching (PSM) analysis (1:1 ratio) was conducted based on multiple variables.

RESULTS

PSM analysis yielded 44 pairs of DAA and PLA patients. CK was significantly higher (p < 0.001) in the DAA than in the PLA group on postoperative day (POD) 2, 5 and 10. The POD2, POD5 and POD10 CK/preoperative CK ratio was 12.9, 5.0 and 0.8 in DAA and 8.8, 3.3 and 0.6 in PLA (p = 0.017, p = 0.012 and p = 0.025, respectively). The POD2, POD5 and POD10 CRP/preoperative CRP ratio was 95.1, 65.6 and 22.8 in PLA and 34.7, 23.3 and 8.9 in DAA (p < 0.001, p = 0.002 and p < 0.001, respectively).

CONCLUSION

PSM analysis of early postoperative CK and CRP values demonstrated that the DAA should be considered as a less stressful approach, not as a muscle-sparing or a minimally invasive THA approach.

Direct Anterior vs. Direct Lateral Approach Total Hip Arthroplasty for Displaced Femoral Neck Fracture

BACKGROUND

This study compared outcomes of the direct anterior approach (DAA) and direct lateral approach (DLA) for treating displaced femoral neck fractures in active elderly patients.

METHODS

This retrospective study included active elderly patients who sustained a displaced femoral neck fracture and underwent a cementless total hip arthroplasty either with a supine DAA or a decubitus DLA. Patients were assessed using the Harris hip score at discharge and at a 6-week follow-up.

RESULTS

A total of 41 women and 18 men were included in the study. Of those, 22 underwent DLA and 37 received DAA, all performed by the same team. In both groups, 69% were women, mean age was 70 years, and mean BMI was 25.2. Mean hemoglobin loss was 2.3 g/dl between admission and the first post-operative day in both groups. Similar numbers in each cohort were discharged home rather than to a rehabilitation center. The patients who underwent the DAA experienced a 2-day reduction in their hospital stay compared to the DLA group (4.2 ± 1.9 vs. 6.8 ± 3.7, respectively; p < 0.001). The Harris hip score in the DAA group was significantly higher at the 6-week follow-up than in the DLA group (87.23 ± 7.75 vs. 81.23 ± 7.67, respectively; p < 0.031).

CONCLUSIONS

The patients who underwent THA with the DAA demonstrated better short term outcomes compared to the alternative approach for displaced femoral neck fractures in active elderly patients. DAA helped patients regain independence faster and might decrease hospitalization and rehabilitation costs. Based on these results, we recommend using the DAA for active elderly patients with a displaced femoral neck fracture.

Effect of anterior approach compared to posterolateral approach on readiness for discharge and thrombogenic markers in patients undergoing unilateral total hip arthroplasty: a prospective cohort study

INTRODUCTION

The direct anterior approach (DAA) for total hip arthroplasty (THA) is considered less invasive than the posterolateral approach (PLA), possibly leading to earlier mobilization, faster recovery, and lower levels of thrombogenic markers. The purpose of the current study was to prospectively compare readiness for discharge, rehabilitation milestones, markers of thrombosis and inflammation at 6 weeks postoperatively between DAA and PLA.

METHODS

A total of 40 patients (20 anterior and 20 posterolateral) were prospectively enrolled. Readiness for discharge, length of stay (LOS), and related outcomes were additionally documented. Blood was drawn at baseline, wound closure, 5-h post-closure, and 24-h post-closure for assays of interleukin-6 (IL-6), PAP (plasmin anti-plasmin), a marker of fibrinolysis, and PF1.2 (Prothrombin fragment 1.2), a marker of thrombin generation.

RESULTS

Compared to the PLA group, the DAA group was ready for discharge a mean 13 h earlier (p = 0.03), while rehabilitation milestones were met a mean 10 h earlier (p = 0.04), and LOS was 13 h shorter (p = 0.02) on average. Pain scores at all study timepoints and patient satisfaction at 6 weeks were similar (p > 0.05). At 24 h postoperatively, PAP levels were 537.53 ± 94.1 µg/L vs. 464.39 ± 114.6 µg/L (p = 0.05), and Il-6 levels were 40.94 ± 26.1 pg/mL vs. 60.51 ± 33.0 pg/mL (p = 0.03), in DAA vs. PLA, respectively.

CONCLUSIONS

In the immediate postoperative period, DAA patients were ready for discharge before PLA patients. DAA patients had shorter LOS, a lower inflammatory response, and higher systemic markers of fibrinolysis. However, these differences may not be clinically significant. Future studies with larger study populations are warranted to confirm the validity and significance of these findings.

LEVEL OF EVIDENCE

Level II, Therapeutic Study.

Direct anterior versus direct lateral hip approach in total hip arthroplasty with the same perioperative protocols one year post fellowship training

BACKGROUND

Variable results have been reported regarding the clinical outcomes in Total hip arthroplasty (THA) based on the surgical approach. The aim of this study is to compare the clinical outcomes between Direct anterior (DA) and direct lateral (DL) approaches in THA when performed immediately after fellowship training.

METHODS

During the 1st year of practice, all consecutive patients who underwent THA via DA and DL hip approaches were retrospectively investigated. Patients'demographics, diagnosis, American society of Anesthesiology (ASA) score, route of anesthesia, length of hospital stay (LOS), leg length discrepancy (LLD), radiographic parameters, operative time, number of opioids refills postoperatively, and complications were collected and compared between the two groups. The short form of Hip Disability and Osteoarthritis Outcome score, Joint Replacement (HOOS, JR) was prospectively collected pre and postoperatively. The minimum follow-up period was 2 years.

RESULTS

Forty patients in DA group and 38 patients in DL group were included. No statistically significant difference was found between the two groups in terms of demographics, diagnosis, ASA scores, route of anesthesia at the time of THA, postoperative radiographic parameters, LOS, LLD, opioid refills and HOOS scores (p > 0.05). Patients in the DA group had shorter operative time (83 ± 17 min) when compared to the DL group (93 ± 24 min) (p = 0.03). No major complications were found except for one early deep infection patient in DL group.

CONCLUSION

Both DA and DL approaches resulted in satisfactory outcomes in THA when performed by a fellowship trained surgeon.

A comparison of different surgical approaches to hemiarthroplasty for the femoral neck fractures: A meta-analysis

There are three traditional surgical approaches to hemiarthroplasty (HA) for femoral neck fractures, respectively, the anterior approach (AA), the lateral approach (LA) and the posterior approach (PA). However, the optimum approach is still controversial, the purpose of this meta-analysis is to identify the merits and demerits of all three approaches. All clinical published studies in PubMed, Web of Science, Embase, and the Cochrane Library from January 2000 to April 2022 were searched which compared different surgical approaches and covered surgery-related outcomes and frequent complications. Five randomized controlled trials and 26 cohort studies for a total of 31 clinical trials were included in the meta-analysis. The dislocation of PA was significantly higher than LA (OR: 3.00 95% CI: 2.25-4.01 I ² = 27% P < 0.00001) and AA (OR: 6.61 95% CI: 2.28-19.13 I ² = 0% P = 0.0005); PA was substantially more than LA in terms of risk of postoperative reoperation (P < 0.05); meanwhile, AA has markedly shorter hospital length of stays than LA. The remaining items showed no significant differences in the results.The results of this meta-analysis demonstrated that the risk of PA dislocation and reoperation is higher with hemiarthroplasty, and AA has markedly shorter hospital length of stays than LA.

SuperPath® vs. direct anterior approach : A retrospective comparison between two minimally invasive approaches in total hip arthroplasty

OBJECTIVE

Minimally invasive approaches are subject to controversy in orthopedic surgery. The aim of the current study was to compare the radiographic parameters between two minimally invasive approaches in total hip arthroplasty.

MATERIAL AND METHODS

Between January 2018 and February 2019, the radiographic parameters of 80 patients undergoing total hip arthroplasty via minimally invasive approaches (DAA: n = 40; SuperPath® SP: n = 40) have been measured. The radiographic analysis was performed with digital software tool mediCad® (HECTEC™ GmbH, Landshut, Germany).

RESULTS

Patients treated with DAA showed significantly higher inclination (SP: 39.7° ± 7.3° vs. DAA: 44.7° ± 5.3°) and significantly lower cup anteversion values (SP: 31.2° ± 7.9° vs. DAA: 27. 5° ± 5.3°, p < 0.001) than patients undergoing THA via SP postoperatively. The horizontal femoral offset was neither preoperatively nor postoperatively higher in DAA than in SP cohort (preoperative: p = 0.71, postoperative: p = 0.25) (preoperative: SP:37.2 mm ± 7.3 vs. DAA 38.2 mm ± 7.5; postoperative: SP: 38.0 mm ± 7.2 vs. DAA: 40.5 mm ± 7.0). At both times, the acetabular offset was significantly higher in DAA cohort than in SP cohort (preoperative: SP: 32.9 mm ± 5.9 vs. DAA: 36.8 mm ± 4.9; postoperative: SP: 28.9 mm ± 4.2 vs. DAA: 33.4 mm ± 3.8) (preoperative: 0.001; postoperative: p < 0.001). The vertical height was preoperatively and postoperatively not significantly higher in SP cohort than in DAA cohort (preoperative: SP: 16.1 mm ± 4.1 vs. DAA: 15.5 mm ± 4.9; postoperative: SP: 16.6 mm ± 4.6 vs. DAA: 16.1 mm ± 4.6) (preoperative: p = 0.77; postoperative: p = 0.58). The preoperatively existing leg length discrepancy of the affected leg could be compensated via surgery without showing significant differences between the two cohorts (preoperative: SP: -3.2 mm ± 5.4 vs. DAA: 1.9 mm ± 4.9; postoperative: SP: 1.5 mm ± 5.4 vs. DAA: 4.8 mm ± 5.6) (preoperative: p = 0.34; postoperative: p = 0.09).

CONCLUSION

The current study demonstrates suitable cup positioning and stem alignment in the coronal plane using minimal-invasive approaches DAA and Superpath®.

Direct anterior approach improves in-hospital mobility following hemiarthroplasty for femoral neck fracture treatment

INTRODUCTION

In elderly patients, an established treatment for femoral neck fractures is hip hemiarthroplasty (HHA) using the anterolateral approach (ALA). Early postoperative mobilization is crucial to reduce perioperative complications. The direct anterior approach (DAA) has been reported to facilitate early recovery of ambulation and is increasingly popular in elective hip surgery but rarely used in femoral neck fractures. The aim was to compare the outcome of the DAA and the ALA in patients treated for femoral neck fracture.

MATERIALS AND METHODS

All HHAs with complete data sets were reviewed from a tertiary public healthcare institution (2013-2020). Propensity score matching was applied to compensate for possible confounders; outcome parameters were perioperative blood loss, postoperative mobility and pain. Secondary outcomes were duration of surgery, length of stay (LOS), complications, reoperation and mortality rates.

RESULTS

There were 237 patients (mean age 85.8 years) available for analysis. The DAA group mobilized earlier during hospitalization (outside patient room: 50.6 vs 38.6%, p = 0.01; walking on crutches/walker: 48.1 vs 36.1%, p < 0.01), had shorter surgeries (DAA vs ALA: 72.5 vs 89.5 min, p < 0.001) and a trend towards fewer complications (32.9% vs 44.9%, p = 0.076). Blood loss (286 vs 287 ml), LOS (10.4 vs 9.5 days), pain (cessation of opioid medication: 2.9 vs 3.3 days post-op), revision (2.5 vs 3.2%) or mortality (30-days: 7.6 vs 5.7%) did not differ between patient groups.

CONCLUSIONS

DAA for HHA led to earlier in-hospital mobility, shorter surgeries and a tendency towards fewer complications. No advantage was found regarding perioperative blood loss and pain.

Total hip replacement performed via a direct anterior approach: A comparison of the lateral and supine position

Background

The direct anterior approach (DA) is a recognised approach for performing a total hip replacement (THR). Proponents cite improved recovery times, lower pain levels and improved patient satisfaction in the early post operative period. The procedure can be performed in the supine or lateral position. We wanted to compare the direct anterior approach in lateral decubitus (LD) position and supine (SU) position.

Methods

Single site, non-randomised, multiple surgeon retrospective cohort study between 2014 and 2021 to compare outcomes, complications and implant position for patients undergoing DAA THR in the SU or LD position.

Results

A total of 39 patients (22 lateral/17 supine) were identified. Patients had an average follow up of 45 months (17-81). 95% of the cohort were ASA 1 or 2. The majority of cases were uncemented (95%). A greater implant selection was used in the lateral group and the supine group used mainly implants associated with the supine table. No significant differences were found in post operative oxford hip scores, haemoglobin, length of stay, operative time, cup inclination, offset or post operative leg length. There were no recorded intra-operative complications in the LA group and two in the SU group - one calcar fracture and one canal perforation. No patient in either group has undergone a revision procedure.

Conclusion

Both the supine and lateral position have resulted in satisfactory patient and radiological outcomes. We identified a higher rate of intra-operative fracture in the supine group which is comparable with existing literature. Given the similar outcomes between both groups we would suggest that surgeons wishing to consider the DAA may consider performing this in the lateral position as this will be more familiar to them, they will be able to use their existing implants and do not need a specialised operating table.

Bikini anterior hip replacements in obese patients are not associated with an increased risk of complication

PURPOSE

Direct anterior approach (DAA) arthroplasty has generated great interest because of its minimally invasive and muscle sparing nature. Obese patients are reported to be associated with greater incidence of complications in primary joint replacement. The purpose of this study was to compare patient outcomes and complication rates between obese and non-obese patients undergoing primary total hip arthroplasty (THA) through a Bikini direct anterior incision.

METHODS

This retrospective, single surgeon study compared the outcome of 258 obese patients and 200 non-obese patients undergoing DAA THA using a Bikini incision, over a 5-year period. The average follow-up was 3.2 years (range 1.1-5.6 years).

RESULTS

There was no statistically significant differences in the complication rate between the two groups. The obese group recorded 2 major (venous thromboembolism and peri-prosthetic fracture) and 2 minor complications (superficial wound infection), compared with the non-obese group, which recorded 2 major (deep-wound infection and peri-prosthetic fracture) and 1 minor complication (superficial wound infection). Patient-reported outcomes (WOMAC and Harris Hip Scores) showed significant post-operative improvements (p < 0.001) and did not differ between the two groups.

CONCLUSIONS

Bikini DDA THA does not increase the complication rate in obese patients and offers similar clinical improvements compared to non-obese patients.

Minimal-invasive anterior approach to the hip provides a better surgery-related and early postoperative functional outcome than conventional lateral approach after hip hemiarthroplasty following femoral neck fractures

INTRODUCTION

Femoral neck fractures (FNF) are one of the most frequent fractures among elderly patients and commonly require surgical treatment. Bipolar hip hemiarthroplasty (BHHA) is mostly performed in these cases.

MATERIAL AND METHODS

In the present retrospective study geriatric patients with FNF (n = 100) treated either by anterior minimal-invasive surgery (AMIS; n = 50) or lateral conventional surgery (LCS; n = 50) were characterized (age at the time of surgery, sex, health status/ASA score, walking distance and need for walking aids before the injury) and intraoperative parameters (duration of surgery, blood loss, complications), as well as postoperative functional performance early (duration of in-patient stay, radiological leg length discrepancy, ability to full weight-bearing, mobilization with walking aids) and 12 months (radiological signs of sintering, clinical parameters, complication rate) after surgery were analyzed.

RESULTS

Patients in the AMIS group demonstrated a reduced blood loss intraoperatively, while the duration of surgery and complication rates did not differ between the two groups. Further, more patients in the AMIS group achieved full weight-bearing of the injured leg and were able to walk with a rollator or less support during their in-patient stay. Of interest, patients in the AMIS group achieved this level of mobility earlier than those of the LCS group, although their walking distance before the acute injury was reduced. Moreover, patients of the AMIS group showed equal leg lengths postoperatively more often than patients of the LCS group. No significant differences in functional and surgery-related performance could be observed between AMIS and LCS group at 12 months postoperatively.

CONCLUSIONS

In conclusion, geriatric patients treated by AMIS experience less surgery-related strain and recover faster in the early postoperative phase compared to LCS after displaced FNF. Hence, AMIS should be recommended for BHHA in these vulnerable patients.

Total Hip Arthroplasty: Direct Anterior Approach Versus Posterior Approach in the First Year of Practice

Background

The direct anterior approach (DAA) for total hip arthroplasty (THA) has been popularized as a less invasive technique, however outcomes within the first year of practice after fellowship have not been investigated. The primary aim was to determine differences in complications and outcomes between DAA and posterior approach (PA) in the first year of practice. The secondary aim was to determine if there was a learning curve factor in DAA and PA after fellowship training.

Methods

THA cases performed by two surgeons during their first year of practice were reviewed. Overall, 181 THAs (91 DAA, 90 PA) in 168 patients, were performed. Intraoperative differences (blood loss, operative time), hospital stay, complications, reoperations, and revisions were compared.

Results

Overall surgical complications were similar between DAA and PA (11% vs. 9%, p=0.64), but complication profiles were different: dislocation (1% vs. 4%, p=0.17), intraoperative femoral fracture (2% vs. 1%, p=0.32), postoperative periprosthetic fractures (2% vs. 3%, p=0.64). neuropraxia (3% vs. 0%, p=0.08). There was no difference in rate of reoperation (1% vs. 3%, p=0.31). There was a difference in rate of revision at final follow-up (0% vs. 6%, p=0.02). DAA consisted of longer operative time (111 vs. 99 minutes; p<0.001), however was only significant in the first 50 cases (p<0.001), while the subsequent cases were similar (p=0.31). There was no difference in the first 50 cases compared to the subsequent cases for either approach regarding blood loss, complications, reoperations, or revisions.

Conclusion

DAA and PA for THA performed within the first year of practice exhibit similarly low complication rates, but complication profiles are different. In our series, PA did demonstrate a higher risk of revision at final follow-up. A learning curve is not unique to the DAA. Both DAA and PA THA exhibited a learning curve in the first 50 cases performed at the start of a surgeon's practice. Level of Evidence: III.

Conversion hip arthroplasty via the direct anterior approach: pearls, pitfalls and personal experience

OBJECTIVE

Conversion total hip arthroplasty (CTHA) through a direct anterior approach (DAA) in supine position.

INDICATIONS

Failed osteosynthesis of proximal femoral fractures or failed conservative hip surgery, with hardware in situ.

CONTRAINDICATIONS

Decayed general conditions, infection (peri-implant or systemic infection), need for greater trochanter reconstruction, severe proximal femur deformity.

SURGICAL TECHNIQUE

Supine position. Mark DAA and expected limited incisions for hardware removal (HR) with the help of a C-arm. Use guidewire and extraction devices for HR. Perform a DAA with particular attention to a wide release of the femur.

POSTOPERATIVE MANAGEMENT

Full progressive weight-bearing starting on day 1, depending on bone quality. Discharge with crutches following patient walking capability. Precautions for 6 weeks.

RESULTS

In all, 27 conversion THAs through a DAA. Mean age at the time of surgery 59.8 (range 18-81) years. Mean body mass index was 23.5 (range 17-31.6). Reasons of previous surgery failures were avascular necrosis of the femoral head, posttraumatic arthritis and nonunion with or without hardware migration. Mean surgical time was 125.8 min (range 58-190 min, standard deviation [SD] 38.2 min). Mean follow-up time was 6.9 years (range 2-15, SD 5.03 years). Mean pre-Harris Hip Score (mHHs) was 24.4 (range 19-36, SD 5.4), while the mean post-mHHS was 90.3 (range 89-91, SD 0.95). Two patients required postoperative osteosynthesis for periprosthetic fractures due to falls. Overall complication rate was 10%.

Factors influencing the outcomes of minimally invasive total hip arthroplasty: a systematic review

Introduction

The present systematic review investigated possible factors which may influence the surgical outcome of minimally invasive surgery for total hip arthroplasty (MIS THA).

Methods

In January 2022, the Embase, Google Scholar, PubMed, and Scopus databases were accessed. All the clinical trials investigating the clinical outcome of MIS THA were considered.

Results

Data from 9486 procedures were collected. Older age was moderately associated with greater Visual Analogue Scale (VAS) (P = 0.02) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) (P = 0.009) at last follow-up, and shorter surgical duration (P = 0.01). Greater body mass index (BMI) at baseline was moderately associated with greater cup anteversion (P = 0.0009), Oxford Hip Score (OHS) at last follow-up (P = 0.04), longer surgical duration (P = 0.04), increased leg length discrepancy (P = 0.02), and greater rate of infection (P = 0.04). Greater VAS at baseline was weakly associated with greater VAS at last follow-up (P < 0.0001), total estimated blood lost (P = 0.01), and lower value of Harris Hip Score (HHS) (P = 0.0005). Greater OHS at baseline was associated with greater post-operative VAS (P = 0.01). Greater WOMAC at baseline was associated with lower cup anteversion (P = 0.009) and greater VAS (P = 0.02). Greater HHS at baseline was associated with shorter hospitalisation (P = 0.001).

Conclusion

Older age and greater BMI may represent negative prognostic factors for MIS THA. The clinical outcome is strongly influenced by the preoperative status of patients.

Surgical Approaches for Managing Femoral Head Fractures (FHFs); What and How to Choose from the Different Options?

Femoral head fractures (FHFs) are considered a relatively uncommon injury; however, they carry a challenge to the trauma surgeon. Choosing the appropriate management option, either conservatively or surgically, if the latter was chosen, should it be open reduction and internal fixation or simple excision of the fragment, or acute total hip arthroplasty. Furthermore, selecting the best surgical approach through which surgical management could be performed depends on the fracture classification, the familiarity of the surgeon, and the presence of associated injuries. All approaches to the hip, including hip arthroscopy, had been proposed for the management of FHFs; however, the difference among approaches is related to the complexity of the approach, the need for special training or equipment, the effect of the approach on the functional outcomes as well as the rate of postoperative complications. This review discussed the possible surgical approaches used to manage FHFs, advantages, and disadvantages for each, and offered a guideline for selecting the most appropriate surgical approach.

Direct anterior approach hip arthroplasty: How to reduce complications - A 10-years single center experience and literature review

BACKGROUND

The direct anterior approach for total hip arthroplasty (DAA-THA) is increasing in popularity due to some advantages such as less surgical trauma, minimal dissection of soft tissues, shorter rehabilitation times, faster return to daily activities, lower incidence of dislocation. On the other hand, the literature reports a high rate of intraoperative complications, with many different rates and complication types in the published papers.

AIM

To analyze our complications comparing results with the literature; to report measures that we have taken to reduce complications rate.

METHODS

All DAA-THA patients with one year minimum follow up who were operated at a single high-volume centre, between January 2010 and December 2019 were included in this retrospective study. All surgeries were performed using cementless short anatomical or straight stems and press fit cups. Patients’ follow-up was performed, at 6 wk, 3 mo, then annually post-surgery with clinical and radiological evaluation. Primary outcomes were stem revision for aseptic loosening and all-cause stem revision. Second outcome was intra-operative and post-operative complications identification.

RESULTS

A total of 394 patients underwent DDA-THA from January 2010 and December 2019, for a total of 412 hips; twelve patients lost to follow-up and one patient who died from causes not related to surgery were excluded from the study. The average age at the time of surgery was 61 years (range from 28 to 78 years). Mean follow-up time was 64.8 mo (range 12-120 mo). Seven stems were revised. One cortical perforation, one trochanteric and lateral cortical wall intraoperative fracture, one diaphyseal fracture, three clinically symptomatic early subsidence and one late aseptic loosening. We also observed 3 periprosthetic fractures B1 according to the Vancouver Classification. Other minor complications not requiring stem revision were 5 un-displaced fractures of the calcar region treated with preventive cerclage, one early infection, one case of late posterior dislocation, 18 case of asymptomatic stem subsidence, 6 cases of lateral cutaneous femoral nerve dysesthesia.

CONCLUSION

DAA is associated to good outcomes and lower incidence of dislocation. Complication rate can be reduced by mindful patient selection, thorough preoperative planning, sufficient learning curve and use of intraoperative imaging.

Direct Anterior Approach for Total Hip Arthroplasty in the Elderly with Femoral Neck Fractures: Comparison with Conventional Posterolateral Approach

BACKGROUND

The aim of this study was to determine if it was feasible and safe to perform total hip arthroplasty (THA) using the direct anterior approach (DAA) when compared with the conventional posterolateral approach (PA) in patients with femoral neck fractures. The time required to start walking was investigated to identify advantages of the muscle-sparing approach. Safety of the approach was judged based on the incidence and nature of all complications.

METHODS

We retrospectively reviewed 67 THA cases due to femoral neck fractures from October 2015 to January 2019. The PA was used in 31 cases, and the DAA was used in 36 cases. The average operative time and amount of bleeding were evaluated. Cup inclination, anteversion, and leg length discrepancy (LLD) were also measured on radiographs. The time to start walking and complications (e.g., intraoperative fracture, infection, and dislocation) were recorded.

RESULTS

The mean operative time was 84.35 ± 13.95 minutes in PA group and 99.22 ± 20.33 minutes in DAA group (p = 0.010). But after experiencing 20 cases using the DAA, there was no statistically significant difference in the operative time between the groups. The mean volume of bleeding was 428.73 ± 207.26 mL in the PA group and 482.47 ± 150.14 mL in the DAA group. There was no difference in the acetabular cup position between two groups. Ambulation was started at 3.94 days after surgery on average in the PA group and 3.14 days in the DAA group, showing a statistically significant difference. Intraoperative fracture and infection were not observed in either group. The incidence of LLD was 1 in each group. The dislocation rate was 3.2% (1 case) in the PA group and 5.5% (2 cases) in the DAA group.

CONCLUSIONS

Although the DAA for THA was similar to the PA in terms of operative time, volume of bleeding, and complications, the DAA showed a great advantage in early rehabilitation as a muscle-sparing procedure in the elderly with femoral neck fractures.

The effect of a postoperative local anaesthetic pain pump in anterior total hip arthroplasty: a randomised control trial

INTRODUCTION

This project aims to determine if an addition of a local anaesthetic pain pump for 48 hours postoperatively effects verbal pain scores (VRS), opioid usage and length of stay (LOS) after anterior approach total hip arthroplasty (THA).

METHODS

This was a single-centre, single-surgeon, randomised, parallel-group study with balanced randomisation involving 108 patients. Randomisation and blinding were computer generated into 2 groups: local infiltration anaesthetic (LIA) only (Control Group) and LIA+ continuous postoperative infusion of local anaesthetic for 48 hours via a pain pump (Intervention Group). Postoperatively VRS (first 30 minutes, 1 hour, 2 hours and every 4 hours postoperatively up to 48 hours), opioid consumption, length of hospital admission, antiemetic and laxative usage were recorded. Statistical analysis utilised independent sample t-tests and repeated ANOVA.

RESULTS

Demographics and duration of surgery were similar across both cohorts. On average, compared to the control group, the intervention group required 2 mg less of opioid consumption over 48 hours (p = 0.41). VRS between the 2 groups showed no statistically significant difference. Scores ranged from 0 to 7, with an average of 1.28 in the intervention group and 1.29 in the control group (p = 0.31). 9 patients in the intervention group and 10 in the control group required antiemetics. There was no difference in the LOS or postoperative constipation. No complications or adverse events occurred.

CONCLUSIONS

Our study has shown the addition of a continuous postoperative infusion of local anaesthetic for 48 hours post an anterior THA had no effect on VRS, opioid consumption, LOS and antiemetic usage.

Direct anterior approach for total hip arthroplasty with patients in the lateral decubitus versus supine positions: A prospective, double-blinded, randomized clinical trial

PURPOSE

The direct anterior approach (DAA) for total hip arthroplasty (THA) can be performed with patients in either in the lateral decubitus or supine position. Prompted by the lack of studies addressing differences between the two positions, this investigation aimed to examine clinical and radiographic outcomes and compare the lateral decubitus versus the supine position for THA using the DAA.

METHODS

Between January 1 and October 1, 2020, 90 patients who underwent primary unilateral THA using the DAA were recruited, with 54 (60%) undergoing THA in the supine position (SP group) and 36 (40%) in the lateral decubitus position (LP group). Technical information, clinical and radiographic outcomes, and patient-reported outcomes, including the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and Short-Form-12 (SF-12) were evaluated. All data were subjected to several statistical tests.

RESULTS

There were no preoperative differences in baseline characteristics between the LP and SP groups, which were also similar in terms of operative duration, length of hospital stay, and blood loss. Radiographic assessment confirmed satisfactory positioning of the prosthesis in both groups. There were no significant differences in terms of CK-MB and hemoglobin levels, Harris Hip Score, WOMAC, UCLA, visual analog scale score, and SF-12. The incidence of complications in the LP group was lower than in the SP group.

CONCLUSION

Total hip arthroplasty performed via DAA in the LP and SP groups yielded excellent clinical outcomes, although the incidence of complications in the former was lower than in the latter.

Do serum markers correlate with invasiveness of the procedure in THA? A prospective randomized study comparing direct anterior and lateral approaches

BACKGROUND

Advantages of minimally invasive approaches for total hip arthroplasty are still matter of debate. Serum markers have been assessed as objective method to quantify muscle damage after surgery but in literature ambiguous results have been reported. The aim of this prospective randomized study was to: 1) compare serum markers elevation between a minimally invasive direct anterior approach (DAA) and a direct lateral approach (DLA); 2) to establish a correlation between serum markers increase and other perioperative variables.

HYPOTHESIS

A lesser elevation of markers could be found in patients who underwent a minimally invasive DAA.

PATIENTS AND METHODS

Seventy patients were enrolled and randomly divided in two groups according to the type of the approach. All patients were treated with the same implant by the same surgeon and received the same rehabilitation protocol. Demographic data, preoperative Harris Hip Score (HHS) and operative time were recorded. Myoglobin, creatine kinase MB (CK-MB), troponin I, C-reactive protein (CRP), haemoglobin (HB) and pain levels were measured pre- and postoperatively.

RESULTS

Mean postoperative rise were 524.9±134.6 and 667.8±409.5 for myoglobin, 4.8±2.5 and 6.6±3.7 for CK-MB, and 16.9±5.3 and 15.4±6.4 for PCR, in DAA and DLA groups, respectively. In both groups, postoperatively values were significantly higher than preoperatively (p<0.05). Comparing the two groups, no significant differences in serum markers elevations were found. A significantly lower postoperative pain was found in DAA group than in DLA group (2.9 vs. 4.2 and 2.7 vs. 3.6 in second and third day, respectively (p<0.05)). No significant correlation was present between the serum marker elevations and age, BMI, HHS, operative time, HB or pain levels (p>0.05).

CONCLUSION

Serum markers of muscle damage and inflammation increased in the postoperative period without significant differences between DAA and DLA, even though overall trend was higher in DLA group. The DAA group had significantly lower levels of postoperative pain. No significant correlation between pain and serum markers levels was found.

LEVEL OF EVIDENCE

I; randomized study.

Minimally Invasive Approaching in Hip Surgery—An Anatomical Investigation of 20 Specimens

Background and objectives: Based on the preparation of 20 formalin-fixed anatomical cadavers, the feasibility of the anterior, minimally invasive approach to the hip joint was investigated in each side of the body. The hypothesis of the study was that the Lateral Femoral Cutaneous Nerve can be spared under the use of this approach. Materials and Methods: The anterior approach to the hip was performed via an incision of 8 cm. The position of the nerve was noticed in relation to the skin incision, and the distance was measured in millimeters. The nerves main, gluteal and femoral trunk were distinguished and investigated for injury. Results: No injury of the main trunk was noticed. The average distance of the main trunk to the skin incision was 14.9 and 15.05 mm in the medial direction, respectively (p < 0.001). Injury of the gluteal branch has to be considered at an overall rate of 40%. Conclusions: The anterior, minimally invasive approach to the hip joint can be performed without injury of the Lateral Femoral Cutaneous Nerve.

Transfusion Rates in Total Hip Arthroplasty Are lower in Patients with Direct Anterior Approach

BACKGROUND

Blood conservation and reduction in the need for allogeneic blood transfusion (ABT) has been a subject of importance in total hip arthroplasty. There are a number of well-recognized parameters that influence blood loss during total hip arthroplasty (THA). The role of surgical approach on blood loss and the rate of ABT during THA is not well studied. The hypothesis of this study was that blood loss and the need for ABT is lower with direct anterior (DA) approach.

METHODS

In a case-control retrospective cohort study, we analyzed 1,524 primary THAs performed at a single institution by seven fellowship-trained surgeons between January 2015 to March 2017. All patients received THA using either the modified direct lateral (DL) or direct anterior (DA) approach using a standard operating table. The overall ABT rate was 10.2% (155/1,524) in the cohort. Demographic, surgical, and postoperative data were extracted and analyzed. Logistic regression was used to identify independent risk factors for transfusion.

RESULTS

Higher preoperative hemoglobin (p<0.001), use of DA approach (p<0.016) and administration of tranexamic acid TXA, (p=0.024) were identified as independent factors which reduced the odds of ABT. Operative time (p<0.001) was associated with an increased odd of ABT, while age, BMI and type of anesthesia were not statistically significant.

CONCLUSION

Based on the findings of this study, direct anterior approach for THA appears to be protective against blood loss and reduced ABT rate, when controlling for confounding variables.

Comparisons between Direct Anterior Approach and Lateral Approach for Primary Total Hip Arthroplasty in Postoperative Orthopaedic Complications: A Systematic Review and Meta-Analysis

The direct anterior approach (DAA) are attracting increasing attention from orthopedic arthroplasty surgeons, due to the less blood loss, mild soft tissue invasion, rapid rehabilitation and shorter length of stay. However, the longer learning curve in DAA can give rise to several complications, such as intraoperative femoral fracture, lateral femoral cutaneous nerve injury, wound-healing problem, premature revision and so on. This meta-analysis was performed to compare the rate of postoperative orthopedic complications between the DAA and the lateral approach (LA). All studies involving the comparison of postoperative orthopedic complications after THA between the DAA and LA group were searched in 7 databases prior to October 2020. The odds ratio (OR) with the 95% confidence intervals (CI) for each outcome was calculated by using the RevMan 5.3. The methodological bias of included studies was evaluated and the potential heterogeneity sources were analyzed. Thirteen comparative studies including a total of 24853 hips (9575 hips in the DAA group and 15278 hips in the LA group) were eligible for this meta-analysis. There was no significant difference in the rate of surgical site infection [2.59% vs 2.14% (OR = 0.98; 95% CI: 0.59-1.61, P = 0.93)], heterotopic ossification [12.16% vs 26.47% (OR = 0.46; 95% CI: 0.20-1.07, P = 0.07)] and reoperation [2.70% and 2.11% respectively (OR = 0.93; 95% CI: 0.68-1.26, P = 0.64)] between the DAA and LA groups. Although a lower rate in prosthesis malposition [36.19% vs 54.86% (OR = 0.50; 95% CI: 0.35-0.73, P = 0.0003)], leg length discrepancy [1.87% vs 2.37% (OR = 2.35; 95% CI: 1.30-4.25, P = 0.005)] and Trendelenburg gait [1.68% vs 4.78% (OR = 0.29; 95% CI: 0.13-0.65, P = 0.003)] was observed in the DAA group, a higher rate in dislocation [0.77% vs 0.18% (OR = 3.73; 95% CI: 2.35-5.94, P< 0.00001)], periprosthetic fracture [1.05% vs 0.41% (OR = 2.38; 95% CI: 1.58-3.58, P< 0.0001)], prosthesis loosening [0.61% vs 0.37% (OR = 1.66; 95% CI: 1.05-2.62, P = 0.03)] and nerve injury [0.95% vs 0% (OR = 7.12; 95% CI: 1.66-30.48, P = 0.008)] was found in the DAA group. This meta-analysis demonstrated several evidences indicating that the DAA exhibited the advantages in the accurate prosthesis placement and less damage of surrounding hip musculature. However, a higher rate in dislocation, periprosthetic fracture, prosthesis loosening and nerve injury in the DAA group should be paid more attention, due to the limited exposure and a longer learning curve, compared to the LA.

Acetabular Exposure Is Enhanced With Self-Retaining Retractors During Direct Anterior Total Hip Arthroplasty

Acetabular exposure for direct anterior (DA) total hip arthroplasty (THA) can be performed using hands-free, self-retaining retractors. No current study quantitatively compares this self-retaining technique with the traditional manual technique. In 65 consecutive DA THA hips, two "best-view" digital photographs were taken of the exposure-one using Charnley/self-retaining retractors and one using a traditional three-retractor manual technique. Percent exposure of the polyethylene liner was calculated. Percent acetabular exposure averaged 80.0% using the Charnley/self-retaining technique, compared with 73.1% using the manual technique (P=.0002). A hands-free technique provides superior acetabular exposure compared with the manual technique. Increasing body mass index predicts decreasing exposure with both techniques. [Orthopedics. 2021;44(2):e309-e313.].

Do Patients With Higher Preoperative Functional Outcome Scores Preferentially Seek Direct Anterior Approach Total Hip Arthroplasty?

Background

There is focus on the direct anterior approach (DAA) for total hip arthroplasty because of perceived postoperative functional improvement. We compared baseline, short-term, and long-term outcomes between the DAA and the posterior approach focusing on baseline function.

Material and methods

Multivariate linear and logistic regression models were used to analyze prospective data on 1457 total hip arthroplasties comparing baseline characteristics, operative time, 90-day reoperation, length of stay (LOS), extended LOS (>3 days), and facility discharge. The Patient-Reported Outcome Measurement Information System-Global Health (PROMIS-10) was used to determine physical component score (PCS) and mental component score (MCS), with clinically significant improvement defined as >5 points. Adjusters included age, sex, race/ethnicity, year, Charlson Comorbidity Index, body mass index, alcohol, and tobacco use.

Results

DAA patients had higher preoperative MCS (DAA 50.4 vs posterior approach 47.4, P < .001), PCS (40.7 vs 38.5, P < .001), and postoperative PCS scores (48.9 vs 46.7, P < .001). There was no difference in mean PCS improvement (8.1 vs 8.2; P = .798) or clinically significant PCS change (P = .963). DAA was associated with shorter LOS by 0.49 days (95% confidence interval [CI] = 0.32-0.65, P < .001), lower odds of extended LOS (odds ratio = 0.33, 95% CI = 0.21-0.50, P < .001), and lower odds of facility discharge (odds ratio = 0.54, 95% CI = 0.37-0.79, P < .001). No difference in operative time (86 vs 87 minutes; P = .812) or 90-day reoperations (1 vs 1%; P = .347) was observed.

Conclusion

DAA patients presented with higher preoperative PCS and MCS scores, yet both groups experienced significant improvement. DAA was associated with decreased LOS and lower odds of extended LOS and facility discharge. There was no difference in operative time or reoperation.

Comparison of short-term outcomes between direct anterior approach (DAA) and SuperPATH in total hip replacement: a systematic review and network meta-analysis of randomized controlled trials

BACKGROUND

Two minimally invasive approaches showed some advantages in outcomes compared to conventional approaches (CAs)-the direct anterior approach (DAA) and the supercapsular percutaneously assisted approach in THA (SuperPATH). To the best of our knowledge, DAA and SuperPATH have never been compared, neither in clinical studies, nor in a meta-analysis. To conduct a systematic review and network meta-analysis of randomized controlled trials comparing short-term outcomes of DAA and SuperPATH in total hip joint arthroplasty (THA).

METHODS

A systematic literature search up to May 2020 was performed to identify randomized controlled trials (RCTs) comparing SuperPATH with CAs and DAA with CAs in THA. We measured surgical, functional, and radiological outcomes. A network meta-analysis, using frequentist methods, was performed to assess treatment effects between DAA and SuperPATH. Information was borrowed from the above-mentioned RCTs, using the CA group as a common comparator.

RESULTS

A total of 16 RCTs involving 1392 patients met the inclusion criteria, three trials with a level I evidence, 13 trials with a level II evidence. The overall network meta-analysis showed that SuperPATH reduced operation time (fixed effect model: MD = 12.8, 95% CI 9.9 to 15.7), incision length (fixed effect model: MD = 4.3, 95% CI 4.0 to 4.5; random effect model: MD = 4.3, 95% CI 0.2 to 8.4), intraoperative blood loss (fixed effect model: MD = 58.6, 95% CI 40.4 to 76.8), and early pain intensity (VAS 1 day postoperatively with a fixed effect model: MD = 0.8, 95% CI 0.4 to 1.2). The two approaches did not differ in acetabular cup positioning angles and in functional outcome.

CONCLUSIONS

Our overall findings suggested that the short-term outcomes of THA through SuperPATH were superior to DAA. SuperPATH showed better results in decreasing operation time, incision length, intraoperative blood loss, and early pain intensity. DAA and SuperPATH were equal in functional outcome and acetabular cup positioning.

Nerve palsy, dislocation and revision rate among the approaches for total hip arthroplasty: a Bayesian network meta-analysis

BACKGROUND

Total hip arthroplasty (THA) is one of the most performed intervention in orthopaedics surgery. Currently, there is no unanimous approval concerning the best approach for THA in terms of nerve palsies, dislocations and further revisions. Hence, a Bayesian network meta-analysis was conducted.

METHODS

The present study was conducted according to the PRISMA extension statement for reporting of systematic reviews incorporating network meta-analyses of healthcare interventions. The literature search was performed in September 2019. The NMA was performed through the STATA Software/MP routine for Bayesian hierarchical random-effects model analysis.

RESULTS

Data from 10,675 THA were collected. The mean follow-up was 10 months. The anterior approach reported the lowest risk to incur a post-operative dislocation (overall inconsistency P = 0.99). The posterolateral approach reported the lowest risk to incur a nerve palsy (overall inconsistency P = 0.77). The funnel plot revealed a low risk of publication bias. The lateral approach was found to have the lowest risk of resulting in a revision surgery (overall inconsistency P = 0.90).

CONCLUSION

According to our network comparisons, the posterolateral approach for THA represent the favourable exposure with regards to nerve palsy, further dislocations and revision surgeries.

Use of traction table did not increase complications in total hip arthroplasty through direct anterior approach performed by novice surgeon

PURPOSE

The purpose of this study was to investigate the surgical outcomes of total hip arthroplasty (THA) through direct anterior approach (DAA) performed by beginners by comparing the outcomes after the introduction of DAA-THA between using a normal operating table and a traction table.

METHODS

The total subjects were 200 patients, there were 120 cases from the introduction of three surgeons using a normal table and 80 cases from two surgeons using a traction table. The surgical procedure was standardized, and a surgeon skilled in DAA entered the operating room and instructed the novice surgeons of DAA in all cases.

RESULTS

The mean operative time was no significant difference between the two groups (p = 0.093). The difference in slope of the operative time was no significant difference between the two groups (p value = 0.089). The mean fluoroscopy time and the mean blood loss were significant difference between the two groups (p < 0.05). The difference in slope of the fluoroscopy time and blood loss were significant difference between the two groups (p < 0.05). There were no intraoperative complications and no reoperations for any reason.

CONCLUSIONS

At the facility with a surgeon skilled in DAA, the use of a traction table in DAA did not increase the complication rate compared with the use of a normal operating table when the exclusion criteria for DAA were set and surgery was performed using intraoperative fluoroscopy under supervision by a skilled surgeon.

Hospitalization length, surgical duration, and blood lost among the approaches for total hip arthroplasty: a Bayesian network meta-analysis

Despite the numerous studies, there is no consensus concerning the best approach for total hip arthroplasty (THA), and debates are ongoing. The purpose of this study was to perform a Bayesian network meta-analysis (NMA) comparing several approaches for primary THA. The focus was on peri-operative outcomes: surgical duration, total estimated blood loss, and length of the hospitalization. This Bayesian network meta-analysis was conducted according to the PRISMA extension statement for reporting systematic reviews incorporating network meta-analyses of health care interventions. In October 2019, the main databases were accessed. All the clinical trials comparing two or more different approaches for primary THA were assessed. For the methodology quality assessment, the PEDro score was performed. The Software STATA MP was used for the statistical analyses. The NMA was performed through the routine for Bayesian hierarchical random-effects analysis with the inverse variance statistic method for continuous variables. Data from 4843 procedures was analysed. Between patient's demographic, good baseline comparability was found. The comparison total estimated blood loss detected statistically significant inconsistency (P = 0.01). The posterolateral approach reported the lowest value for the surgical duration. The test for overall inconsistency was statistically significant (P = 0.4). The posterolateral approach reported the shortest hospitalization length. The test for overall inconsistency was statistically significant (P = 0.9). The posterolateral approach reported shorter surgical duration and hospitalization length. Concerning the analysis of total estimated blood loss, no significant result was obtained. Data must be considered in the light of the limitations of the present study.

Surgical Technique and Case Series of Total Hip Arthroplasty with the Hueter Anterior Approach for Crowe Type-IV Dysplasia

BACKGROUND

Total hip arthroplasty (THA) is being increasingly performed via the Hueter anterior approach (HAA), which has proven benefits with nondysplastic hips; however, little has been published on its outcomes with dysplastic hips, where it can provide better acetabular exposure. We describe our technique for THA via the HAA in hips with Crowe type-IV developmental dysplasia and report the mid-term outcomes of cases that were performed over 5 consecutive years.

METHODS

We retrospectively evaluated a continuous series of 8 hips (6 patients) with Crowe type-IV dysplasia; the patient ages ranged from 44 ± 20 years (range, 17 to 65 years) at the index THA. All of the patients received uncemented implants via the HAA on a traction table to restore the hip center of rotation to the true acetabulum. Femoral head autografts (FHAs) were used to increase acetabular coverage in 6 hips, and subtrochanteric shortening osteotomies (SSOs) were performed in 5 hips. Patients were assessed clinically and radiographically at a minimum follow-up of 2 years.

RESULTS

There were no revisions, deaths, dislocations, or infections. Two hips (25%) had intraoperative complications, and 1 hip (13%) had a postoperative complication that required reoperation without implant removal. All of the hips were assessed clinically and radiographically at 4 ± 1 years (range, 2 to 6 years). The modified Harris hip score (mHHS) improved from 33 ± 7 to 90 ± 7, and the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) improved from 53 ± 14 to 89 ± 6; the postoperative leg-length discrepancy was 3.2 mm (range, -10 to 20 mm). None of the hips had osteolysis or radiolucent lines of >2 mm.

CONCLUSIONS

THA via the HAA on a traction table for hips with Crowe type-IV dysplasia yielded satisfactory mid-term outcomes. Both FHA and SSO can be adequately performed via the HAA to help restore the hip center of rotation to the true acetabulum.

LEVEL OF EVIDENCE

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

Survival analysis for all-cause revision following primary total hip arthroplasty with a medial collared, triple-tapered primary hip stem versus other implants in real-world settings

OBJECTIVE

Patients that undergo total hip replacement (THA) are at risk of revision surgery. This study evaluated the cumulative incidence of revision following a medial collared, triple tapered (MCTT) primary hip stem versus other implants in real-world settings using electronic medical records.

METHODS

This was a retrospective cohort study that used the Mercy Healthcare Systems - Orthopedics Database (MHSOD) to identify ACTIS total hip system, a MCTT primary hip stem for THA, and any other primary THA between 2016 and 2020. A Kaplan-Meier analysis was conducted to evaluate the risk of revision over time between the MCTT hip stem and other implants. In order to control for the confounding, a multivariable Cox model was developed to evaluate the risk of revision between the two groups.

RESULTS

There were 1213 patients treated with MCTT hip stem and 6916 patients treated with other implants. The Kaplan-Meier analysis showed statistically significant difference (p value = .006) in cumulative incidences for all-cause revisions between the MCTT hip stem and other implants. The cumulative incidence at 3 years was 1.08% (0.43-2.72%) for the MCTT hip stem, while it was 2.63% (2.19-3.16%) for other implants. After adjusting for patient demographics, clinical characteristics, prescribed medications, and surgeon characteristics, the multivariable Cox proportional hazard model showed the MCTT hip stem was statistically significantly associated with 57% lower risk of revisions compared with other implants (HR, 0.43; 95% CI, 0.19-0.97; p-value = .042).

CONCLUSIONS

This real-world study found that the incidence of revision after treatment with MCTT primary hip stem was significantly lower than for other implants.

Traction table versus standard table total hip arthroplasty through the direct anterior approach: a systematic review

BACKGROUND

The direct anterior approach (DAA) for total hip arthroplasty (THA) was originally performed with a supine patient on a specialised traction table, but the approach can also be performed on a standard operating table. Despite cost and safety implications, there are few studies directly comparing these techniques and table choice remains largely surgeon preference. The purpose of this review was to compare the clinical outcomes and complication profiles of traction and standard table DAA for primary THA.

METHODS

The authors searched databases for relevant studies, screening in duplicate. Study quality was assessed using MINORS criteria or Cochrane Risk of Bias Tool. Data pertaining to patient demographics, clinical outcomes, and complications were abstracted.

RESULTS

Of 3085 initial titles, 44 studies containing a total 26,353 patients were included and analysed. Mean operative time was 70.9 ± 21.2 minutes for standard table (n = 4402) and 100.1 ± 32.6 minutes for traction table (n = 3518). Mean estimated blood loss was 382.3 ± 246.4 mL for standard (n = 2992) and 531.7 ± 364.3 mL for traction table (n = 2675). Intra-operative fracture rate was 1.3% for standard table (n = 3940) and 1.7% for traction table (n = 8386). Complication rates including revisions, dislocations and peri-prosthetic fractures were qualitatively similar between traction and standard table studies.

CONCLUSION

Standard table and traction table DAA have similar outcomes and complications. Both techniques offer the short-term advantages of DAA when compared to other THA approaches. However, the standard table technique may offer perioperative advantages including decreased blood loss, shorter operative time, and fewer intraoperative fractures. In the context of rising global healthcare costs and lack of access to specialised orthopaedic traction tables, this review at minimum confirms the short-term safety of standard table DAA THA and prompts the need for future studies to directly compare these techniques.

Comparison of clinical and economic outcomes between the direct anterior approach and the posterolateral approach for primary total hip arthroplasty

Introduction

Total hip arthroplasty (THA) is one of the most frequently performed surgical procedures in orthopedics. The most commonly employed approaches are the posterolateral approach (PLA) and the lateral approach. Minimally invasive techniques such as direct anterior approach (DAA) and minimal invasive surgery direct anterior approach (MIS DAA) are used more and more often. The aim of the study was to compare the two approaches DAA and PLA in terms of length of stay, economic outcomes, quality of life, hip joint function and hip joint awareness.

Material and methods

The study was performed as a retrospective analysis of 52 cementless total hip arthroplasty procedures performed by MIS DAA and 56 cementless THA performed by classic standard PLA. The evaluation of hip joint awareness, quality of life, hip joint fitness assessment and economic indicators were evaluated.

Results

The mean duration of the anterior approach procedure (48.96 min) was found to be around half that of the posterior approach (102.52 min) (Levene's test: F = 2.37; p > 0.005). The mean durations of the two types of approaches were found to be significantly different (Student's t test: t (106) = -16.15; p < 0.005). The shorter mean duration of stay and shorter procedure duration associated with the anterior approach result in mean savings of PLN 5465.96 per procedure.

Conclusions

The MIS DAA procedure is a safe and less traumatizing surgical approach for hip arthroplasty which allows faster post-operative primary mobilization, shorter procedure time and sooner discharge from hospital than standard PLA. Significant reduction in costs of hospitalization was observed in the MIS DAA procedure.

Surgical Approaches in Total Hip Arthroplasty Cost Per Case Analysis: A Retrospective, Matched, Micro-costing Analysis in a Socialised Healthcare System

BACKGROUND

Total hip arthroplasty (THA) offers an effective method of pain relief and restoration of function for patients with end-stage arthritis. The anterior approach (AA) claims to benefit patients with decreased pain, increased mobilisation and decreasing length of hospital stay (LOS). In a socialised healthcare platform we questioned whether the AA, compared to posterior (PA) and lateral (LA) approaches, can decrease the cost burden.

METHODS

Using a retrospective matched cohort study, we matched 69 AA patients to 69 LA and 69 PA patients for age (p = 0.99), gender (p = 0.99) and number of pre-surgical risk factors (p = 0.99). First, we used the Resource Intensity Weights (RIW) using the Health Services agreed on method of calculating cost. Secondly, micro-costing analysis was performed using the financial services data for each patient's hospital stay.

RESULTS

Using the RIW based cost analysis and 2-day reduction (95% CI 1.8-2.4) in LOS, the AA offers an estimated savings per case of $4099 (p < 0.001) compared to the LA and PA. Using micro-costing analysis, we found a total saving of $1858.00 per case (95% CI 1391-2324) when comparing the AA to the PA and LA. There was a statistically significant cost savings using every category: Net Direct Salary ($901.00, p < 0.001), Net Drug ($8.00, p = 0.003), Patient Supply ($454.00, p = 0.001), Patient Drug ($15.00, p = 0.008), Indirect Cost ($385.00, p < 0.001), Patient Care Administration ($106.00, p < 0.001). Furthermore, the AA saved 142 minutes of in-hospital rehabilitation time.

CONCLUSION

The AA THA provides statistically significant reductions in cost compared to PA and LA while releasing rehabilitation resources.

Natural outcome of hemoglobin and functional recovery after the direct anterior versus the posterolateral approach for total hip arthroplasty: a randomized study

BACKGROUND

Total hip arthroplasty (THA) is one of the most successful orthopedic surgeries. There are many common surgical approaches for THA. The direct anterior approach (DAA) and posterolateral approach (PLA) were compared, leading to controversial results.

METHODS

We report on a prospective randomized study which compared the changes of perioperative hemoglobin (Hb), the Harris hip score (HHS) and a visual analog scale (VAS) pain score following THA using DAA or PLA. A total of 130 participants were randomly divided into two groups (65 DAA versus 65 PLA). Perioperative ΔHb and other clinical outcomes were recorded.

RESULTS

A total of 130 participants completed follow-up, while 14 patients were not recorded in blood outcomes due to blood transfusions and complications. The average Hb decrease immediately after surgery in the DAA group was greater than that in the PLA group (21.1 versus 15.8 g/L, P < .001). However, post-operative Hb descent velocity was slower in the DAA group, and the lowest point was reached earlier. No significant differences in ΔHb levels could be observed after 1 month in the two groups. When compared with the PLA group, the DAA group had a shorter incision (9.1 versus 13.5 cm, P < .001) and shorter hospital stay (4.2 versus 4.7 days, P = .004). However, the operation time of the DAA group was longer (88.0 versus 66.8 min, P < .001). The DAA group had a better HHS and VAS pain score at 6 weeks post-surgery. However, no significant differences were observed at later time points.

CONCLUSION

We concluded that DAA performed better on enhanced recovery after surgery (ERAS) than PLA in THA, while both DAA and PLA could result in a positive, similar result after 3 months.

TRIAL REGISTRATION

The study was registered by the Chinese Clinical Trial Registry (ChiCTR1900020770, 19 January 2019).

Disadvantage during Perioperative Period of Total Hip Arthroplasty Using the Direct Anterior Approach: a Network Meta-Analysis

BACKGROUND

The purpose of this study was to analyze complications of complete hip arthroplasty through systematic review and network meta-analysis of comparative studies of direct anterior approach (DAA), anterolateral approach (LA), and posterolateral approach (PA).

METHODS

Prospective randomized controlled trials (RCTs) or quasi-experimental designs evaluating clinical outcomes of DAA, LA, and PA for complete hip arthroplasty are valid if they meet the following criteria: 1) Comparison of clinical outcomes between the three methods for main complete hip arthroplasty (total hip arthroplasty, THA); 2) Compared at least one of the following outcomes: blood loss, operating time, and transfusion volume; 3) Sufficient data were available to extract and pool, i.e., mean reported, standard deviation and number of subjects. A network meta-analysis was used to determine the results of treatment across various surgical approaches. Indirect comparisons between the two surgical approaches was made by borrowing details from the standard comparator (i.e., the posterior approach).

RESULTS

Eight prospective RCTs were included in the meta-analysis of the network. The operation time of the LA was longer than that of PA (standardized mean difference [SMD], 0.96; 95% confidence interval [CI], 0.74-1.18; P < 0.001). DAA also had significantly longer operation time than PA (SMD, 0.45; 95% CI, 0.24-0.66; P < 0.001). However, blood loss of the DAA was the highest compared to other approaches (SMD, 0.60; 95% CI, 0.39-0.82; P = 0.002).

CONCLUSION

When performing THA with DAA, we should pay attention to increased operation time and blood loss.

Does surgical approach influence mid- to long-term patient-reported outcomes after primary total hip replacement? A comparison of the 3 main surgical approaches

Background

The most effective surgical approach to total hip replacement (THR) remains controversial. Most studies that have compared approaches have reported only short-term outcome data. It is therefore unclear in the literature if a particular surgical approach offers long-term advantages. The aim of this study was to determine the effect of the 3 main surgical approaches to THR on patient-reported outcomes 5 years after surgery.

Methods

All patients who underwent a THR for osteoarthritis or osteonecrosis between 2008 and 2012 by an anterior, posterior or lateral approach at The Ottawa Hospital in Ontario, Canada, were included in the study. All preoperative and postoperative scores for the Hip Disability and Osteoarthritis Outcome Score (HOOS) and Western Ontario and MacMaster Universities Osteoarthritis Index (WOMAC) questionnaires were recorded. Analysis of covariance was used to study the relationship between the amount of change in scores on the HOOS and WOMAC subscales (dependent variables) and the surgical approach. The confounding factors of age, sex, American Society of Anesthesiologists (ASA) class, Charnley classification and body mass index were included in the analysis.

Results

There were 138 patients (37.6%) in the posterior approach group, 104 (28.3%) in the lateral approach group and 125 (34.1%) in the anterior approach group. There were no significant differences among the 3 groups in terms of Charnley classification, body mass index, sex, ASA class, surgical side and preoperative functional scores. We did not observe any significant differences in the amount of change in the scores for HOOS and WOMAC subscales among the 3 groups. There were also no differences in the final postoperative scores.

Conclusion

Our findings suggest that the choice of surgical approach in primary THR surgery without revision has no influence on functional outcomes and quality of life after 5 years. Further studies are needed to assess how patient age and sex may influence the functional outcome of individual surgical approaches.

Triflange acetabular reconstruction for pelvic discontinuity through a direct anterior approach

A 74-year-old female patient presented to our clinic with pelvic discontinuity after multiple revision total hip surgeries requiring custom triflange acetabular reconstruction, which we accomplished through a direct anterior approach to the hip. The direct anterior approach to the hip has grown in popularity but still has the reputation of being a minimally invasive approach without the capacity for extensile exposure in the revision setting. We describe the extensile technique and demonstrate through our case the ability to perform the most challenging cases through this approach and discuss the potential benefits of its utilization.

Femoral artery intimal injury following total hip arthroplasty through the direct anterior approach: a rare but potential complication

Vascular injury following total hip arthroplasty (THA) is a rare but known complication. Various vascular lesions have been described in the literature, with arterial intimal damage being uncommon. Despite the recent popularity of the direct anterior approach in THA, only 1 case of iatrogenic vascular injury has been reported. We report 3 cases of common femoral artery intimal damage with thrombosis following direct anterior THA. We propose that misplacement of the anterior retractor in this approach, especially in certain susceptible patients, can lead to vascular damage. Therefore, maintaining a step-wise approach to placing the retractor with caution is essential. One of our cases had a delayed presentation of undetectable arterial pulse, highlighting the significance of regular postoperative vascular examinations.

Short-term outcomes of the supine muscle-sparing anterolateral versus direct lateral approach to primary total hip arthroplasty

BACKGROUND

Although total hip arthroplasty (THA) is among the most successful orthopaedic procedures, it is not without complications. As such, finding the optimal surgical approach has become an area of particular interest. In this study, we compare: (1) pain intensity; (2) opioid consumption; (3) lengths of stay (LOS); (4) complication rates; (5) discharge destination; and (6) ambulatory function between patients who underwent THA via the supine muscle-sparing anterolateral (MS-ALA) and conventional direct lateral (DLA) approaches.

METHODS

A retrospective analysis was conducted on 220 consecutive patients who received primary THA using the supine MS-ALA (n = 101) or DLA (n = 119) between 1 January 2014 and 31 December 2016. Outcomes included postoperative pain intensity, opioid consumption, LOS, discharge destination, complications, additional procedures, and time to independent ambulation.

RESULTS

We demonstrated significantly lower opioid consumption on postoperative days (POD) 1 and 2 (mean differences, -32.0 and -28.4 mg, respectively; p ⩽ 0.001) and decreased pain intensity during the second 24 hours of the hospital stay (mean difference, -22.0; p < 0.001) in patients receiving the MS-ALA. Relative to the DLA cohort, patients in the MS-ALA cohort were 2.04 times more likely to be discharged to home (p = 0.028) and 1.91 times less likely to experience postoperative abductor insufficiency (p = 0.039).

CONCLUSION

The present study is the 1st to compare postoperative outcomes, particularly pain intensity and opioid consumption, between the supine muscle-sparing anterolateral and direct lateral THA approaches. Further research should investigate the effect of surgical approach on quality and cost of care, include larger sample sizes, and involve longer-term follow-up.