Lower Urinary Tract Infection and Periprosthetic Joint Infection after Elective Primary Total Hip Arthroplasty

Factors Influencing Postoperative Inpatient Rehabilitation Requirement After Surgical Intervention for Isolated Hip Fracture: A Multicenter Study

PURPOSE

Hip fractures in the elderly, especially those discharged to a rehab facility, have historically been associated with poor outcomes. There has yet to be identified which patients have a higher likelihood of a rehab discharge after isolated hip fracture fixation. The purpose of this study was to identify factors that predispose patients to require short or long-term rehab after surgical intervention of traumatic, isolated hip fractures.

METHODS

Patients undergoing operative management of hip fractures (n = 71,849) from 2017 to 2019 at institutions that submitted data to a nationwide database were analyzed retrospectively. Various factors were compared between patients discharged to inpatient rehab (n = 56,178) versus home (n = 15,671).

RESULTS

The rehab discharge group was significantly older and predominantly female. This cohort had a longer average hospital stay, higher incidence of diabetes, congestive heart failure, chronic renal failure, history of cerebrovascular accident, functionally dependent health status, hypertension, chronic obstructive pulmonary disease, dementia, baseline anticoagulation therapy, and history of myocardial infarction. DVT during hospitalization was encountered more often in patients discharged to rehab. Patients with femoral neck fractures and those undergoing total hip arthroplasty were more often discharged home. Patients with intertrochanteric hip fractures and those undergoing fracture fixation were more often discharged to rehab.

CONCLUSIONS

Multiple risk factors associated with a significantly higher likelihood of a rehab discharge after isolated hip fracture surgery were identified. Early identification of these patients may provide an opportunity to optimize patients for home discharge and better outcomes.

LEVEL OF EVIDENCE

Level III, Case-Control Study.

Is asymptomatic bacteriuria a noticeable risk factor for periprosthetic joint infection following total joint arthroplasty? A systematic review and meta-analysis

INTRODUCTION

Total joint arthroplasty (TJA) is a common procedure that improves the quality of life for severe arthritis patients. The rising demand for TJA places enormous financial strain on the world's healthcare systems, which is exacerbated by postoperative readmissions for complications such as periprosthetic joint infections (PJIs). We conducted a systematic review and meta-analysis to determine if asymptomatic bacteriuria (ASB) increases infection risk.

METHODS

We conducted searches in three databases: PubMed, Scopus, and Web of Science. Screening steps have been carried out according to PRISMA guidelines. The study focused on patients who had undergone TJA and exhibited ASB. Two reviewers independently screened, assessed quality, and extracted data. Meta-analysis used Mantel-Haenszel method.

RESULTS

Following full-text screening, 12 studies were deemed eligible for inclusion in the systematic review, encompassing a total of 42,592 patients. A heightened occurrence of PJI was observed among TJA patients with ASB in comparison to controls (OR [95%CI] = 3.47 [1.42-8.44]). However, microorganisms responsible for the PJIs differed from those identified in the urine cultures of ASB. Additionally, analyses indicate that preoperative antibiotic treatment for ASB does not significantly affect the subsequent risk of PJI (OR [95% CI] = 1.00 [0.42-2.39]). Unlike surgical site infection (SSI), which did not show a difference in the rate of occurrence between the two groups, TJA patients with ASB were more likely to experience superficial wound infection (OR [95%CI] = 3.81 [2.02-7.21]).

CONCLUSION

This review and meta-analysis confirm that ASB correlate with heightened risks of PJI and superficial infection in TJA patients. However, no relationship was found between ASB and PJI microorganisms which raise doubts about the role of ASB microorganisms as the direct cause of infection following TJA.

Do urinary tract infections affect the rate of periprosthetic joint infections in patients who underwent arthroplasty surgery? A systematic review and meta-analysis

Periprosthetic joint infection (PJI) is a significant issue in orthopedic surgery. Urinary tract infections (UTIs) and asymptomatic bacteriuria (ASB) have been identified as potential causes of PJI; however, evidence is inconclusive. Understanding these relationships is critical for improving therapy and patient outcomes. A systematic review was performed by conducting searches from PubMed, EBSCO, ProQuest, and manual searching with adherence to the Preferred Reporting Items for Systematic Review and Meta-Analysis 2020 guideline. Studies that reported UTI/ASB and PJI were included. Meta-analysis was conducted using a random-effects model using RevMan 5.4 software. A total of 14 studies were included with UTIs and ASB showed an overall association with increased risk of PJI (odds ratio [OR]: 1.84, 95% confidence interval [CI]: 1.14-2.99, P = 0.01). However, subgroup analysis for UTIs and ASB was not significant. Further analysis of UTIs in total hip arthroplasty (THA) surgery showed a significant association (OR: 1.76, 95% CI: 1.57-1.96) with PJI. Preoperative UTIs timing between 0 and 2 weeks before surgery showed an increased risk of PJI (OR: 1.45, 95% CI: 1.35-1.55). Antibiotic treatment in ASB did not significantly impact PJI rates. Urine and PJI sample cultures in four studies showed no correlation of microorganisms between the two sites. According to recent evidence, a statistically significant association was found between UTIs and PJI in patients who underwent THA surgery. However, ASB did not yield significant results in relation to PJI. These results should be supported by larger and well-designed studies to make proper clinical suggestion in future. For further research, it is recommended to adopt standardized criteria for outcome measurement and to involve larger sample sizes to enhance the reliability and generalizability of findings.

Comparison of the Surgical Outcome between the Multiple Screw Fixation and Fixed Angle Devices for the Basicervical Femoral Neck Fractures

Introduction: Basicervical femoral neck fracture (FNF) is an uncommon type of femoral neck fracture and is associated with an increased risk of fixation failure due to its inherent instability. The purpose of this study was to compare the surgical parameters and reoperation rate between the use of a multiple cannulated screw (MCS) and fixed angle device (FAD) in treating basicervical FNFs. Methods: We retrospectively reviewed the records of 885 patients who underwent internal fixation between May 2004 and August 2019 to determine basicervical FNF with at least 12 months of follow-up. Among the identified 77 patients with basicervical FNF, 17 patients who underwent multiple cannulated screw (MCS) fixation and 36 patients who underwent fixed angle device (FAD) fixation were included. We compared the rates of fracture-site collapse and reoperations according to the fixation device. Results: Among the 53 patients with basicervical FNF, 13 patients (24.5%) sustained surgical complications (8 collapses of fracture site and 5 reoperations). The reoperation rate in the MCS group was significantly higher than that in the FAD group (23.5% vs. 2.8%, p = 0.016), without any significant difference in the collapse of the fracture site (11.8% vs. 16.7%, p = 0.642). Conclusions: Although basicervical FNF was rare among hip fractures, fracture site collapse was prevalent and prone to fixation failure. Surgeons should keep this in mind, and consider FAD for basicervical FNF.

Symptomatic Benign Prostatic Hyperplasia Is Not Associated With a Higher Risk of Periprosthetic Joint Infections and Periprosthetic Joint Infection-related Revisions After Primary THA

BACKGROUND

Symptomatic benign prostatic hyperplasia (sBPH) is a potential risk factor for periprosthetic joint infection (PJI), a leading cause of implant failure and revision THA. However, the available evidence is mixed on whether this is the case.

QUESTIONS/PURPOSES

(1) What is the prevalence of sBPH in male recipients of primary THA by age group? (2) Do patients with sBPH compared with those without sBPH have higher 30-day, 90-day, and 2-year odds of PJI and higher 30-day and 90-day odds of urinary catheterization, urinary tract infection (UTI), and sepsis after primary THA? (3) Do patients with sBPH compared with those without sBPH have lower survivorship free from PJI-related revision at 5 years after THA?

METHODS

The PearlDiver database was used as it provided the largest sample of patients across all payer types to perform longitudinal research. Between January 2010 and April 2021, 1,056,119 patients who underwent primary THA were identified. After applying the inclusion criteria (that is, male sex, minimum age of 18, and diagnosis of hip osteoarthritis) and exclusion criteria (that is, history of asymptomatic BPH or any other joint arthroplasty), 16% (172,866) of patients remained. A further 6% (59,500) of patients were excluded as they did not meet the minimum study follow-up of 2 years, leaving 11% (113,366) for analysis. Of those, patients with sBPH were matched to those without in a 1:4 ratio by age and comorbidities, including alcohol abuse, anemia, cardiovascular disorders, chronic pulmonary disease, diabetes mellitus, depression, obesity, peripheral vascular disorders, renal failure, and rheumatoid arthritis. Age and comorbidities of the two groups postmatch were balanced. Logistic regression was performed to analyze the odds for 30-day, 90-day, and 2-year postoperative complications. Survivorship free from PJI-related revision at 5 years after THA was estimated using the Kaplan-Meier method and compared with the log-rank test.

RESULTS

Among male recipients of primary THA ages 65 or older, 24% (11,319 of 47,426) had a medical history of sBPH. We found no difference in the odds of PJI at 30 days, 90 days, and 2 years after primary THA between the two groups. PJI occurred in 0.5% (62 of 11,819), 0.8% (97 of 11,819), and 1.3% (150 of 11,819) of patients with sBPH versus in 0.5% (227 of 47,103), 0.8% (360 of 47,103), and 1.2% (570 of 47,103) of those without sBPH within 30 days (OR 1.09 [95% CI 0.82 to 1.43]), 90 days (OR 1.07 [95% CI 0.85 to 1.34]), and 2 years (OR 1.05 [95% CI 0.87 to 1.25]) after THA, respectively. Patients with sBPH compared with those without had higher odds of 30-day and 90-day urinary catheterization (OR 5.00 [95% CI 3.64 to 6.88] and OR 5.36 [95% CI 4.04 to 7.13], respectively), 30-day and 90-day UTI (OR 2.18 [95% CI 1.88 to 2.54] and OR 2.55 [95% CI 2.26 to 2.87], respectively), and 30-day and 90-day sepsis (OR 1.55 [95% CI 1.11 to 2.13] and OR 1.43 [95% CI 1.10 to 1.83], respectively). We found no difference in survival free from PJI-related revision at 5 years after THA between patients with and without sBPH (98.3% [95% CI 98.1% to 98.6%] versus 98.1% [95% CI 98.1% to 98.2%]; p = 0.10).

CONCLUSION

sBPH is common among THA recipients, and surgeons should be aware of the added risk of postoperative urinary complications and sepsis in this subset that could lead to additional postoperative care requirements. Surgeons may consider perioperative measures such as preoperative use of short-form questionnaires to assess urinary symptoms, urology clearance or referral, and closer follow-up to improve care of sBPH patients undergoing THA. As currently available tools for assessing sBPH are limited and lack sensitivity as well as specificity, future studies may develop validated tools that can be used to quickly assess risk in sBPH patients before surgery.

LEVEL OF EVIDENCE

Level III, therapeutic study.

The Timing of Preoperative Urinary Tract Infection Influences the Risk of Prosthetic Joint Infection Following Primary Total Hip and Knee Arthroplasty

BACKGROUND

The importance of preoperative urinary tract infection (UTI) in total hip and knee arthroplasty (THA and TKA) is controversial. The purpose of this study was to investigate the timing of preoperative UTI diagnosis and association with prosthetic joint infection (PJI) and determine if antibiotics impact this risk.

METHODS

A national database was used to analyze patients undergoing THA and TKA diagnosed with a preoperative UTI. Timing of diagnosis was categorized by 1-week intervals prior to surgery. Matched cohorts without UTI were collected, and PJI rates within 2 years of surgery were compared. Patients who received antibiotic prescriptions were identified and compared to no prescription.

RESULTS

Preoperative UTI within 1 week of TKA was associated with higher rates of PJI (odds ratio [OR] 1.34, 95% confidence interval [CI] 1.26-1.43, P < .001). Preoperative UTI within 1 week of THA (OR 1.56, 95% CI 1.44-1.68, P < .001) and between 1-2 weeks prior to THA (OR 1.12, 95% CI 1.02-1.22, P = .022) was associated with significantly higher rates of PJI. UTI diagnosis at any other time interval did not reach statistical significance. Antibiotic prescription was not associated with lower rates of PJI.

CONCLUSION

Patients with preoperative UTI within 1 week of TKA or within 2 weeks of THA have an increased risk of postoperative PJI. Antibiotics do not appear to mitigate risk.

LEVEL OF EVIDENCE

Level III; Retrospective, database comparison.

Impact of a mobile decision support tool on antimicrobial stewardship indicators in St. John's, Canada

Objectives

Inappropriate antibiotic use contributes to antimicrobial resistance. The Spectrum^TM app provides antibiotic decision support, based on local antimicrobial resistance rates. We determined the impact of regional implementation of the app on inpatient antimicrobial appropriateness, inpatient antimicrobial usage (AMU), population-based Clostridioides difficile infection (CDI) rates and cost, using a retrospective, before and after quasi-experimental design, including a one-year study period.

Methods

The Spectrum^TM app was released to prescribers in February, 2019. We performed two one-day inpatient point prevalence surveys using the National Antimicrobial Prescribing Survey tool, six months before (June 25, 2018) and six months after (June 25, 2019) app dissemination. Inpatient AMU in Defined Daily Dose/1000 patient days and CDI incidence were compared, before and after app dissemination.

Results

The pre-survey included 184 prescriptions, and the post-survey included 197 prescriptions. Appropriateness was 97/176 (55.1%) pre, and 126/192 (65.6%) post (+10.5%, p = 0.051). Inpatient AMU declined by 6.6 DDD/1000 patient days per month, and CDI declined by 0.3 cases per month. Cost savings associated with reduced AMU were $403.98/bed/year and associated with reduced CDI were $82,078/year.

Conclusion

We observed improvement in antimicrobial stewardship indicators following Spectrum^TM implementation. We cannot determine the cause of these improvements.

Effect of urinary tract infection on the risk of prosthetic joint infection: A systematic review and meta-analysis

PURPOSE

Urinary tract infection (UTI) are very common in the general population, however it is unclear whether UTI is a risk factor of prosthetic joint infection (PJI). Our purposes were: (1) To determine whether UTI is a risk factor of PJI after joint replacement, and (2) to determine whether the microorganisms causing PJI and UTI are the same.

METHODS

PubMed, Web of Science, the Cochrane Library, and EMBASE were searched systematically for studies. The effect sizes of RR were calculated for included studies that reported raw counts with 95% CIs. The aim 1 of the study is a meta-analysis; the aim 2 is a systematic review.

RESULTS

The aim 1 indicated that the risk of PJI was significantly higher in the UTI group than in the control group (RR = 3.17; 95% CI, 2.19-4.59). The aim 2 indicated that the microorganisms of UTI and PJI were the same in the same patient, and these included Enterococcus faecalis, and Pseudomonas, which supports the theory of PJI occurring via the haematogenous route from the genitourinary tract that harbours bacteria in UTI.

CONCLUSION

This study identified UTI as being significantly associated with PJI after joint arthroplasty and PJI occurring via the haematogenous route from the genitourinary tract harbouring bacteria in UTI. Therefore, postponing surgery and even treating patients with known UTI preoperatively are recommended.

Does Symptomatic Benign Prostatic Hyperplasia Increase the Risk of Periprosthetic Joint Infection After Primary Total Joint Arthroplasty?

BACKGROUND

Periprosthetic joint infection (PJI) is among the leading causes of failure in total joint arthroplasty. A recently proposed risk factor for PJI is symptomatic benign prostatic hyperplasia (sBPH). This study aims to determine if sBPH is associated with PJI following primary total hip arthroplasty (THA) and total knee arthroplasty (TKA).

METHODS

Using the Mariner all-payer claims database, 1745 patients with sBPH undergoing primary THA were propensity-matched with 3490 controls, and 3053 patients with sBPH undergoing primary TKA were propensity-matched with 6106 controls. Additionally, the same 1745 patients with sBPH undergoing THA were compared to 317,360 prematched controls, and the same 3053 patients with sBPH undergoing TKA were compared to 557,730 prematched controls. Univariate analysis was conducted using chi-squared or ANOVA where appropriate.

RESULTS

At two years postoperatively, patients with sBPH were not at significantly increased risk for PJI following primary THA (1.54% vs 1.43%; P = .745) and TKA (1.99% vs 2.14%; P = .642) relative to postmatch controls. Compared to matched controls, THA patients with sBPH had an increased 90-day incidence of anemia (P < .001), blood transfusion (P < .001), and urinary tract infection (UTI; P < .001). Total knee arthroplasty patients with sBPH had an increased 90-day incidence of anemia (P < .001), blood transfusion (P < .001), cellulitis (P = .023), renal failure (P = .030), heart failure (P = .029), and UTI (P < .001) relative to matched controls.

CONCLUSION

In primary THA and TKA, sBPH does not appear to be an independent risk factor for PJI within two years postoperatively. However, clinicians should be cognizant of the significantly increased risk for postoperative UTI in this patient population.

Impact of Perioperative Urinary Tract Infection on Surgical Site Infection in Patients Undergoing Primary Hip and Knee Arthroplasty

BACKGROUND

The literature lacks clear consensus regarding the association between postoperative urinary tract infection (UTI) and surgical site infection (SSI). Additionally, in contrast to preoperative asymptomatic bacteriuria, SSI risk in patients with preoperative UTI has been incompletely studied. Therefore, our goal was to determine the effect of perioperative UTI on SSI in patients undergoing primary hip and knee arthroplasty.

METHODS

Using the National Surgical Quality Improvement Program database, all patients undergoing primary hip and knee arthroplasty were identified. Univariate and multivariate regressions, as well as propensity matching, were used to determine the independent risk of preoperative and postoperative UTI on SSI, reported as odds ratios (ORs) with 95% confidence intervals (CIs).

RESULTS

Postoperative UTI significantly increased the risk for superficial wound infection (OR 2.147, 95% CI 1.622-2.842), deep periprosthetic joint infection (PJI) (OR 2.288, 95% CI 1.579-3.316), and all SSIs (superficial and deep) (OR 2.193, 95% CI 1.741-2.763) (all P < .001). Preoperative UTI was not associated with a significantly increased risk of superficial infection (P = .636), PJI (P = .330), or all SSIs (P = .284). Further analysis of UTI present at the time of surgery using propensity matching showed no increased risk of superficial infection (P = 1.000), PJI (P = .624), or SSI (P = .546).

CONCLUSION

Postoperative UTI was associated with SSI, reinforcing the need to minimize factors which predispose patients to the risk of UTI after surgery. The lack of association between preoperative UTI and SSI suggests that hip and knee arthroplasty can proceed without delay, although initiating antibiotic treatment is prudent and future prospective investigations are warranted.

Urinary Self-Catheterization is Not Associated with Increased Risk of Major Complications Following Total Hip and Knee Arthroplasty

BACKGROUND

The objective of this study is to evaluate urinary self-catheterization as a potential risk factor for postoperative complications following total hip (THA) and knee (TKA) arthroplasty procedures.

METHODS

Self-catheterization patients who underwent total joint arthroplasty from 2005 to 2014 were identified in a national insurance database. Rates of death, hospital readmission, emergency room visit, infection, revision, and dislocation for THA or arthrofibrosis for TKA were calculated, as well as cost and length of stay. Self-catheterizing patients were then compared to a 4:1 matched control cohort using a logistic regression analysis to control for confounding factors.

RESULTS

Sixty-nine patients underwent THA, and 128 patients who underwent TKA and who actively self-catheterized at the time of surgery were identified. Self-catheterization was not associated with infection, emergency room visits, readmissions, revision surgery, arthrofibrosis, or cost compared to the 4:1 matched control cohort. However, self-catheterization was associated with significantly longer length of stay (difference for THA = 1.91 days, confidence interval = 0.97-2.86, P < .001; difference for TKA = 0.61, odds ratio = 0.16-1.06, P = .01).

CONCLUSION

Self-catheterization does not appear to be associated with increased risk of major complications following total joint arthroplasty with the numbers available in this study. Reassurance can be given regarding concerns for infection and other complications following surgery in this patient population.

Is Routine Urinary Screening Indicated Prior To Elective Total Joint Arthroplasty? A Systematic Review and Meta-Analysis

BACKGROUND

Prosthetic joint infection (PJI) is a serious complication after total joint arthroplasty, and prevention is of great importance. The genitourinary tract is a potential source of bacterial seeding and one that can be easily managed. Despite little supportive evidence, routine urine screening and subsequent treatment before elective surgery in patients without symptoms has found its way into clinical practice in many countries. This systematic review and meta-analysis aims to ascertain whether asymptomatic bacteriuria (ASB) is a risk factor for PJI and if so, whether preoperative antibiotic treatment is effective in reducing its risk.

METHODS

PubMed, Ovid Medline, and Cochrane databases were searched using a systematic strategy. Selection of papers was exclusive to include only those which offered information about PJI rate specifically in patients with or without asymptomatic abnormal urinalysis or bacteriuria and/or information on whether ASB patients were preoperatively treated with antibiotics or not to be included in the analysis.

RESULTS

Six-hundred sixty-three papers were screened, and 10 papers were ultimately included (28,588 patients). Results show an increased risk of developing PJI among ASB patients (odds ratio = 3.64, 95% confidence interval = 1.40-9.42). However, most PJI microorganisms are unrelated to those previously found in the urine and preoperative antibiotic therapy does not influence PJI risk (odds ratio = 0.98, 95% confidence interval = 0.39-2.44).

CONCLUSION

Routine urinary screening prior to elective total joint arthroplasty and treatment of asymptomatic patients is not recommended.

Should a Urinary Tract Infection Be Treated before a Total Joint Arthroplasty?

Periprosthetic joint infection (PJI) is one of the most serious complications after total joint arthroplasty (TJA). The prevalence of urinary tract infection (UTI) is common, particularly among elderly women, a group for whom TJA may be required. The association between preoperative UTI and increased risk of PJI after TJA is unclear. We reviewed key articles concerning the relationship between UTIs and PJI, and summarized recommendations of international consensus on PJI, which was established in Philadelphia in July of 2018. In addition, we distinguish between symptomatic UTI and asymptomatic bacteriuria, because their causative effects on PJI are quite different.

The Impact of Common Urologic Complications on the Risk of a Periprosthetic Joint Infection

BACKGROUND

Periprosthetic infections after total hip arthroplasty (THA) or total knee arthroplasty (TKA) are substantial complications, and there are conflicting reports of their association with urologic complications. Our objective was to determine whether urinary tract infection (UTI) and acute urinary retention (AUR) are significant risk factors for joint infections after THA or TKA.

METHODS

We performed a population-based, retrospective cohort study of patients who were ≥66 years old when they underwent an initial THA or TKA between April 2003 and March 2013. Investigated exposures included a UTI presenting for treatment within 2 years after joint replacement, as well as AUR within 30 days after THA or TKA. The primary outcome was joint infection requiring hospital admission following THA or TKA (which had to occur within 2.25 years after THA or TKA for the UTI exposure or 120 days for the AUR exposure).

RESULTS

A total of 113,061 patients met the inclusion criteria and had arthroplasties (44,495 THAs and 68,566 TKAs) during the study period. The median age was 74 years (interquartile range [IQR], 70 to 79 years). Of those patients, 28,256 (25.0%) had at least 1 UTI and they were more likely to be older and female; to have had previous antibiotic exposure, cystoscopy, or urinary retention; and to have atrial fibrillation. Most of those UTIs were coded as nonspecific UTI, and the patient was seen for outpatient treatment in a non-emergency department setting. A total of 2,516 patients (2.2%) had AUR within 30 days of the procedure. Those patients were more likely to be older and male, to have medical comorbidities, to have had previous transurethral procedures or cystoscopy and previous urology visits, and to have received a general anesthetic during their procedure. A total of 1,262 patients (1.1%) had joint infection requiring hospital admission. In multivariate Cox regression analysis, UTI was associated with an increased risk of joint infection (hazard ratio [HR], 1.21 [95% confidence interval (CI), 1.14 to 1.28]; p < 0.01). However multivariate analysis did not demonstrate an association between AUR and joint infection (HR, 0.99 [95% CI, 0.60 to 1.64]; p = 0.98).

CONCLUSIONS

UTI was associated with increased risk of hip or knee periprosthetic joint infection, whereas AUR was not a significant risk factor. Timely and appropriate treatment of symptomatic UTIs in this patient population may be important to prevent periprosthetic joint infection.

LEVEL OF EVIDENCE

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

Risk factors of fixation failure in basicervical femoral neck fracture: Which device is optimal for fixation?

BACKGROUND

Basicervical femur neck fracture (FNF) is a rare type of fracture, and is associated with increased risk of fixation failure due to its inherent instability. The purpose of this study was (1) to investigate the incidence of fixation failure and (2) to determine risk factors for fixation failure in basicervical FNF after internal fixation.

METHODS

To identify basicervical FNF with a minimum of 12 months follow-up, we retrospectively reviewed records of 3217 patients who underwent hip fracture surgery from May 2003 to March 2016. Among the identified 77 patients with basicervical FNF, 69 patients were followed up for at least 12 months. We evaluated the rate of collapse of fracture site and reoperation due to fixation failure. We performed a multivariable analysis to determine risk factors associated with fracture site collapse and fixation failure.

RESULTS

Among the 69 patients with basicervical FNF, 17 (24.6%) showed collapse of fracture site, and 6 (8.6%) underwent conversion to arthroplasty because of fixation failure. In the multivariable analysis, use of extramedullary plating with a sliding hip screw was an independent significant risk factor for both collapse of fracture site (odds ratio 6.84; 95% confidence interval 1.91-24.5, p = 0.003) and fixation failure (odds ratio 12.2; 95% confidence interval 1.08-137.7, p = 0.042).

CONCLUSIONS

Basicervical FNF treated with extramedullary plate with a sliding hip screw is more likely to fail than that treated with intramedullary nail with a helical blade. Our results suggested that intramedullary nail with a helical blade is more recommended for basicervical FNF compared with extramedullary plate with a sliding hip screw.

LEVEL OF EVIDENCE

III, Retrospective cohort study.