Symptomatic Benign Prostatic Hyperplasia: A Risk Factor for Periprosthetic Joint Infection in Male Patients

Preoperative and Postoperative Residual Urine in 796 Men Older than 65 Years Undergoing Elective Orthopaedic Surgery in Denmark: A Single-Center Cohort Study

Background

Postvoid residual urine (PVR) can be an unknown chronic disorder, or it can occur after surgery. A pilot study led to development of a flowchart suggesting performing preoperative and postoperative bladder scans and recommending men with PVR further diagnostic work-up. This study aimed to determine the prevalence of preoperative and postoperative PVR in men older than 65 years undergoing major elective orthopaedic surgery and also to determine risk factors and possibility of prediction.

Methods

This was a single-center cohort study. The patients were consecutively included for 1 year from April 2022. Data were extracted from the electronic patient files: age, lower urinary tract symptoms (LUTS), comorbidity, type of surgery and anesthesia, opioid use, and preoperative and postoperative PVR which was defined as ≥150 ml.

Results

A total of 796 men were eligible for inclusion: 316 knee, 276 hip, and 26 shoulder arthroplasties and 178 lower back spinal surgeries. Preoperative bladder scans were acquired in 95% of the eligible patients, and PVR was found in 15% (confidence interval [CI] 12-18). There was a higher risk of preoperative PVR in men reporting LUTS, OR 1.97 (1.28-3.03); neurological disease, OR 3.09 (1.41-6.74); and the risk increased with higher age, OR 1.08 per year (1.04-1.12). PVR was found in 9% of the men without risk factors. A postoperative bladder scan was performed in 72% of the men. Among men without preoperative PVR, 15% (CI 12-19) had postoperative PVR de novo. The highest risk for PVR postoperative was PVR preoperatively.

Conclusions

Preoperatively, 15% had PVR. Neurological disease, LUTS, and higher age were identified as risk factors, but PVR was found in 9% of the men without risk factors. In men without preoperative PVR, 15% had postoperative PVR de novo. It is not possible to conclude whether PVR is transient or chronic, and it is unclear whether a PVR of 150 ml is associated with complications or if the threshold should be higher. This study highlights the importance of awareness regarding voiding issues before and after surgery.

Level of Evidence

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

Impact of Benign Prostatic Hyperplasia on Postoperative Complications and Periprosthetic Joint Infections After Total Joint Arthroplasty: A Systematic Review and Meta-Analysis

Background

Total joint arthroplasty (TJA) is one of the most frequently performed surgical procedures each year, offering considerable cost-effectiveness and numerous benefits. However, certain postoperative complications can be observed following TJA. While the relationship between various comorbidities and these complications has been well-documented, this study aims to specifically investigate the impact of benign prostatic hyperplasia (BPH) on postoperative outcomes.

Methods

For this systematic review, we searched PubMed, Scopus, and Web of Science using terms like "total hip arthroplasty," "total knee arthroplasty," "BPH," and "benign prostatic hypertrophy." Screening of retrieved articles was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Studies comparing complications in TJA between patients with and without preexisting BPH were eligible for inclusion. Data extraction was performed on the included articles, and their quality was assessed using the Newcastle-Ottawa scale. A meta-analysis was conducted using the Mantel-Haenszel method.

Results

This systematic review encompassed 4 articles evaluating TJA outcomes in men with a history of BPH, involving a total of 75,222 male cases. Among these, 17,183 cases (23%) presented with symptomatic BPH. The meta-analysis revealed that the incidence rate of periprosthetic joint infection did not significantly differ between BPH and non-BPH groups across both total hip and knee arthroplasty cases (odds ratio [OR] (95% confidence interval [CI]) = 1.28 [0.92-1.79]). However, postoperative urinary retention was significantly higher among patients with BPH (OR [95% CI] = 3.43 [2.04-5.78]). Additionally, patients with BPH exhibited a notably elevated incidence of postoperative urinary tract infection (OR [95% CI] = 2.55 [2.33-2.79]), as well as sepsis (OR [95% CI] = 1.31 [1.09-1.58]).

Conclusions

It is noteworthy that while patients with BPH are prone to certain complications, meta-analysis indicate that BPH cannot be considered a comorbidity that increases the risk of periprosthetic joint infection.

Impact of unplanned second debridement, antibiotics and implant retention on long-term outcomes in knee exchange arthroplasty: Elevated risk of failure and reinfection

Purpose

This study investigates the outcomes of two-stage exchange arthroplasty (EA) for periprosthetic joint infection (PJI) following initial or unplanned repeat debridement antibiotics, and implant retention (DAIR).

Methods

We retrospectively reviewed cases of knee arthroplasty infection treated with two-stage EA after DAIR, spanning from January 1994 to December 2010. A total of 138 patients were included, comprising 112 with initial DAIR and 26 with an unplanned second DAIR. Data on demographics, comorbidities, infection characteristics and causative organisms were analyzed. The primary outcome was implant failure or reinfection, observed over a minimum follow-up of 10 years.

Results

The overall success rate for two-stage EA was 87% (119/138 patients). Factors identified for treatment failure included reinfection with the same pathogen for unplanned second DAIR (hazard ratio [HR] = 3.41; 95% confidence interval [CI] = 1.35-4.38; p = 0.004), higher reinfection rates in patients undergoing EA after an unplanned second DAIR, especially with a prior history of PJI within 2 years (HR = 4.23; 95% CI = 2.39-5.31; p = 0.002), pre-first DAIR C-reactive protein (CRP) levels over 100 mg/dL (HR = 2.52; 95% CI = 1.98-3.42; p = 0.003) and recurrence with the same pathogen (HR = 2.35; 95% CI = 1.32-4.24; p = 0.007). Additional factors such as male gender (HR = 3.92; 95% CI = 1.21-5.25; p = 0.007) and osteoporosis (T score < -2.5; HR = 3.27; 95% CI = 1.23-5.28; p = 0.005) were identified as risk factors for implant failure in all EA cases.

Conclusions

This study identifies key risk factors for worse knee EA outcomes following DAIR, including a pre-first DAIR CRP level over 100 mg/L, same pathogen recurrence, and PJI history within 2 years. It shows implant failure rates remain constant across EA cases, regardless of DAIR sequence, particularly with risk factors like male gender and severe osteoporosis (T score < -2.5). These results underscore the need for careful evaluation before an unplanned second DAIR, given its significant impact on EA success.

Level of Evidence

Level III.

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.

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.

Symptomatic Benign Prostatic Hyperplasia: An Optimizable Risk Factor for Periprosthetic Joint Infection After Elective Primary Total Knee Arthroplasty

BACKGROUND

Whether symptomatic benign prostatic hyperplasia (sBPH), which is common among middle-aged and older men, affects the risk of periprosthetic joint infection (PJI) remains controversial. The present study explored this question among men undergoing total knee arthroplasty and total hip arthroplasty (TKA and THA).

METHODS

We retrospectively analyzed medical data from 948 men who underwent primary TKA or THA at our institution between 2010 and 2021. We compared the incidence of postoperative complications such as PJI, urinary tract infection (UTI), and postoperative urinary retention (POUR) between 316 patients (193 hips and 123 knees) who did and 632 patients who did not have sBPH; the 2 groups of patients were matched to each other in a 1:2 ratio based on numerous clinical demographic variables. In the subgroup analyses, we stratified sBPH patients according to whether they began anti-sBPH medical therapy prior to arthroplasty.

RESULTS

PJI following primary TKA was significantly more common among sBPH patients than among patients who did not have sBPH (4.1 vs 0.4%; P = .029), as were UTI (P = .029), and POUR (P < .001). Patients who had sBPH also had an increased incidence of UTI (P = .006) and POUR (P < .001) following THA. Among sBPH patients, those who started anti-sBPH medical therapy before TKA suffered significantly lower incidence of PJI than those who did not.

CONCLUSION

Symptomatic benign prostatic hyperplasia is a risk factor for PJI after primary TKA among men, and starting appropriate medical therapy before surgery can reduce the risk of PJI following TKA and postoperative urinary complications following TKA and THA.

The Role of Single Positive Cultures in Presumed Aseptic Total Hip and Knee Revision Surgery-A Systematic Review of the Literature

(1) Background: Prior to revision hip (THA) or knee arthroplasty (TKA), periprosthetic low-grade infection (PJI) should be ruled out. Despite advances in preoperative diagnosis, unsuspected positive cultures (UPCs) may occur in initially planned aseptic revisions. Particularly, single UPCs pose a diagnostic and therapeutic dilemma, as their impact on outcome is unclear and recommendations are heterogeneous. This review investigates the frequency of single UPCs and their impact on implant survivorship. (2) Methods: In July 2022, a comprehensive literature search was performed using PubMed and Cochrane Library search. In total, 197 articles were screened. Seven retrospective studies with a total of 5821 cases were able to be included in this review. (3) Results: Based on the cases included, UPCs were found in 794/5821 cases (14%). In 530/794 cases (67%), the majority of the UPCs were single positive. The most commonly isolated pathogens were coagulase negative Staphylococci and Cutibacterium acnes. Five of seven studies reported no influence on revision- or infection-free survival following a single positive culture. In two studies, single UPCs following THA revision were correlated with subsequent re-revision for PJI. (4) Conclusions: Single UPCs of a non-virulent pathogen following presumed aseptic TKA revision may be interpreted as contaminants. A single UPC following THA revision may be a risk factor for subsequent PJI. The role of systemic antibiotic treatment remains unclear, but it should be considered if other risk factors for PJI are present.

The Association of Benign Prostatic Hyperplasia on Postoperative Complications and Periprosthetic Joint Infections Following Total Shoulder Arthroplasty

Background

A recently proposed risk factor for periprosthetic joint infections (PJI) in men is benign prostatic hyperplasia (BPH). The objective was to explore the association of BPH on 1) 90-day complications, 2) length of stay (LOS), 3) readmission rates, and 4) healthcare expenditures following total shoulder arthroplasty (TSA).

Methods

A retrospective query was performed using a nationwide claims database from January 2005 to March 2014 for male patients undergoing primary TSA. The study cohort included 5067 patients with BPH while 50,720 patients served as the comparison cohort. Logistic regression determined the association of BPH on complications and readmissions. A p value less than 0.001 was significant.

Results

Patients with BPH had higher incidence and odds (36.8 vs. 6.2%; OR: 2.73, p < 0.0001) of all ninety-day medical complications including PJIs (0.49 vs. 0.32%; OR: 1.54, p < 0.001). BPH patients had longer in-hospital LOS (3- vs. 2-days, p < 0.0001). Study group patients had higher 90-day episode of care reimbursements ($13,653 vs. $12,688), p < 0.0001).

Conclusions

BPH is associated with increased complications and healthcare expenditures following total shoulder arthroplasty. The investigation can be used to educate BPH patients of the possible adverse events which may occur within ninety-days following primary TSA for the treatment of glenohumeral osteoarthritis.

Benign prostatic hyperplasia is associated with increased 90-day medical complications but not peri-prosthetic joint infections following reverse shoulder arthroplasty

INTRODUCTION

Studies have shown male sex to be a predisposing factor for peri-prosthetic joint infections (PJIs). Symptomatic benign prostatic hyperplasia (BPH) has been suggested as an additional risk for PJI. This study aimed to assess the impact of BPH on (1) lengths of stay (LOS), (2) complications (medical and implant-related), (3) readmission rates, and (4) healthcare expenditures after reverse shoulder arthroplasty (RSA).

METHODS

Utilizing a nationwide sample from the 2010-2020 PearlDiver insurance database, an analysis was performed retrospectively for all males who underwent primary RSA. Males with BPH (n = 2,184) represented the study group and were ratio-matched with men without a history of BPH (n = 10,832) in a 1:5 manner by medical comorbidities. T-tests compared LOS and healthcare expenditures. Multivariate logistic regression models were used to determine the effect of BPH on 90-day medical complications, 2-year implant complications, and readmissions. A p value less than 0.001 was statistically significant.

RESULTS

In-hospital LOS (1.96 days vs. 1.99 days, p = 0.683) did not significantly differ between cohorts. Males with BPH had significantly greater occurrence and odds (34.3% vs. 21.2%, odds ratio (OR):1.84, p < 0.0001) of all 90-day medical complications, including urinary tract infections (9.3% vs. 3.1%, OR:3.23, p < 0.0001), pneumonias (6.0% vs. 3.9%, OR:1.61, p < 0.0001), and acute kidney injuries (7.7% vs. 5.0%, OR:1.60, p < 0.0001). Two-year implant-related complications were comparable between study and control groups (12.2% vs 10.9%, OR:1.14, p = 0.073), including PJIs (2.3% vs. 2.2%, OR:1.02, p = 0.874). Readmission rates (1.88% vs. 2.11%, p = 0.482) and average global 90-day reimbursements ($26,301 vs. $24,399), p = 0.535) were similar between men with and without BPH.

DISCUSSION

Males with a history of BPH have greater rates of medical complications, including UTIs and acute kidney injuries, within 90 days following RSA. BPH does not appear to be a risk factor for 2-year implant-related complications including PJIs.

LEVEL OF EVIDENCE

III.

Unsuspected Positive Cultures in Planned Aseptic Revision Knee or Hip Arthroplasty-Risk Factors and Impact on Survivorship

BACKGROUND

Unsuspected positive cultures (UPCs) may be found at the time of planned aseptic revision surgery and have previously been associated with decreased implant survival. However, reported rates vary greatly, and potential risk factors are widely unknown. This study investigates the rate of UPCs, implant survival, as well as potential risk factors for UPCs and revision.

METHODS

This is a retrospective, single-center study on 434 cases of total hip arthroplasty (THA 277) and knee revision arthroplasty (TKA 157) performed between 2010 and 2017. Microbiology culture results, revision-free survival (RFS) and infection-free (IFS) survival, and the potential impact of UPCs as well as patient- or procedure-related risk factors were investigated at a minimum follow-up of 24 months (median 41 months).

RESULTS

A total of 37% of patients had a positive culture (160/434). 27% (119/434) had a solitary positive culture, and 9% (41/434) had ≥2 positive cultures of the same species. Most commonly, coagulase-negative staphylococci were cultured. Overall, 32% (13/41) of patients with ≥2 positive cultures underwent revision for infection compared with 6% (17/274) of patients with negative cultures. RFS and IFS were reduced if ≥2 cultures were positive. Single positive cultures had no impact on RFS or IFS. Male sex, elevated serum C-reactive protein, and obesity were independently associated with finding ≥2 UPCs in revision THA.

CONCLUSION

Appearance of ≥2 UPCs in aseptic revision leads to reduced RFS and IFS. Males, obese patients, and patients with elevated serum C-reactive protein planned for THA revision should be considered for extended diagnostics to rule out periprosthetic joint infection.

Perioperative Medical Optimization of Symptomatic Benign Prostatic Hyperplasia Is an Economically Justified Infection Prevention Strategy in Total Joint Arthroplasty

BACKGROUND

Abnormal voiding dynamics may be a modifiable risk factor for prosthetic joint infection (PJI) after total joint arthroplasty (TJA), but the cost-effectiveness of their optimization in the perioperative setting is unknown. Using a break-even analysis, we calculated the economic viability of perioperative voiding optimization for infection prevention after TJA in patients with symptomatic benign prostatic hyperplasia (BPH).

METHODS

A perioperative voiding optimization algorithm was created to represent a common approach to treating symptomatic BPH before TJA. Treatment is initiated with a 6-week trial of tamsulosin (pathway 1), followed by 6 months of combination tamsulosin/finasteride therapy (pathway 2) if symptoms persist. Patients with unremitting symptoms after medical management undergo surgical correction with transurethral resection of the prostate (pathway 3). Costs associated with each pathway were derived from the literature and institutional purchasing records. A break-even economic model was constructed to calculate the absolute risk reduction (ARR) in the infection rate and number needed to treat necessary for cost-effectiveness.

RESULTS

Pathway 1 was cost-effective if it prevented 1 infection of 113 (ARR = 0.883%) TKAs or 140 (ARR = 0.714%) THAs. Pathway 2 was cost-effective if it obviated infection in 1 of 69 TKAs (ARR = 1.445%) or 86 THAs (ARR = 1.169%). Pathway 3 was only deemed cost-effective assuming a cost of $400,000 to treat a PJI (number needed to treat = 71, ARR = 1.406%). Cost-effectiveness for pathways 1 and 2 was maintained with varying voiding optimization costs, infection rates, and PJI costs.

CONCLUSION

Perioperative medical management of symptomatic BPH is an economically justified PJI prevention strategy, whereas surgical interventions appear to be financially substantiated only when considering the long-term societal costs of a PJI.

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.