Primary realignment vs suprapubic cystostomy for the management of pelvic fracture-associated urethral injuries: a systematic review and meta-analysis

OBJECTIVE

To compare primary urethral realignment (PR) with suprapubic cystostomy (SPC) for the management of pelvic fracture-associated posterior urethral injuries with regards to rates of stricture, erectile dysfunction, and urinary incontinence.

METHODS

Two electronic databases (MEDLINE and EMBASE) were searched with the assistance of a librarian. Title, abstract, and full text screening was carried out by 2 independent reviewers, with discrepancies resolved by consensus. Narrative reviews, surveys, and historical articles were excluded. Only studies reporting a direct comparison of PR vs SPC for the management of posterior urethral injuries associated with blunt trauma in adults were included. Quality assessment of the included articles was performed in duplicate. Stricture incidence was evaluated for all included studies, as were erectile dysfunction and incontinence rates when reported. All outcomes were treated as dichotomous data with calculation of odds ratio and were pooled using a random effects model with Review Manager 5.1.

RESULTS

Our comprehensive search yielded 161 unique articles. Nine articles were included in the final meta-analysis. Stricture rate was significantly lower in the PR group (odds ratio [OR] = 0.12, 95% confidence interval [CI] 0.04-0.41, P <.001). There was no significant difference between the 2 interventions with regards to erectile dysfunction (OR = 1.19, 95% CI 0.73-1.92, P = .49) or incontinence (OR = 0.75, 95% CI 0.38-1.48, P = .41).

CONCLUSION

PR appears to reduce the incidence of stricture formation after pelvic fracture-associated posterior urethral injuries as compared with SPC.

Indications for surgical management of osteochondritis dissecans of the knee in the pediatric population: a systematic review

Several case series have been published exploring the surgical management of osteochondritis dissecans (OCD) of the knee in pediatric patients. This systemic review was performed to identify the surgical indications for this condition. A search of the Embase and Ovid Medline databases was performed to identify clinical studies reporting outcomes of surgical management of OCD in the knee in this patient population. A quality assessment of the included articles was conducted independently by two reviewers using a quality assessment tool developed by Yang et al. A total of 25 articles met the eligibility criteria and were reviewed; 40% of studies did not clearly describe their surgical indications. The remainder of the studies had a failure of nonoperative management with or without the concomitant use of imaging as their indication for surgery, or used lesion stability itself as the indication for surgery. This review outlines several surgical indications presented in the literature for the treatment of OCD lesions of the knee in the pediatric population. The most common indication for surgery was a failure of a trial of nonoperative treatment with or without the concomitant use of serial imaging. Although the quality of the case series was high, inconsistencies in reporting radiographic and arthroscopic classification of the OCD lesion were common.

Femoroacetabular impingement in elite ice hockey players

PURPOSE

The purpose of this study is to evaluate the presence of clinical and radiological femoroacetabular impingement (FAI) in elite ice hockey players and compare it to a control group of non-athletes.

METHODS

Forty participants (20 non-athletes and 20 elite ice hockey athletes) underwent an evaluation of their hip joint, including assessment of range of motion and special provocative impingement tests. Two musculoskeletal radiologists assessed MRIs completed on each participant for radiological findings associated with FAI, including alpha angle, acetabular version angle, acetabular depth, and/or a lateral centre edge angle, and findings of labral and cartilage degeneration. A comparative analysis of the clinical and radiological findings was subsequently completed.

RESULTS

There was a significant difference in the radiological CAM impingement measured by mean alpha angle between both groups (non-athletes: 43.2 degrees, SD 9.7; and athletes: 54.2 degrees, SD 12 (p = 0.003)). There were no statistically significant differences between the groups upon evaluating PINCER impingement. There were no statistically significant differences in clinical examination findings between both groups.

CONCLUSION

MRI evidence suggests that CAM impingement is more common in the elite ice hockey athlete in comparison with non-athletes. However, as this is a pilot study examining findings in asymptomatic individuals, there is a need for a longitudinal prospective cohort study. In keeping with this, sufficient, long-term follow-up is required to assess at what point, if any, these subjects with radiological findings become symptomatic.

A painful squat test provides limited diagnostic utility in CAM-type femoroacetabular impingement

PURPOSE

The purpose of this study is to determine the relationship between a symptomatic maximal squat and the presence of radiographic CAM-type femoroacetabular impingement (FAI) on magnetic resonance imaging (MRI) and to determine the sensitivity and specificity of a maximal squat test for the presence of radiographic CAM-type femoral deformity in an adult population.

METHODS

In this pilot study, 76 consecutive patients were recruited from an outpatient clinic at McMaster University. All patients presented with pre-arthritic hip pain and were asked to perform a maximal squat. The results of this test were compared to magnetic resonance imaging and magnetic resonance angiographic (MRI and MRA) findings evaluating and characterizing CAM-type FAI deformity.

RESULTS

The sensitivity and specificity of the maximal squat test were 75 % (56.6-88.5 %) and 41 % (27.0-56.8 %), respectively, for CAM-type FAI deformity. The positive and negative likelihood ratios were modest at 1.3 (0.9-1.7) and 0.6 (0.3-1.2), respectively. This means that a 30 % pre-test probability is improved to 36 % following a positive squat test and reduced to 20 % with a negative squat test.

CONCLUSION

The maximal squat test was found to have marginal incremental diagnostic ability for CAM-type FAI. Its utility in the diagnostic evaluation of FAI remains limited. This survey elucidates areas of research for future studies relevant to the clinical diagnosis of FAI.

Pre-operative intra-articular hip injection as a predictor of short-term outcome following arthroscopic management of femoroacetabular impingement

PURPOSE

Diagnostic hip injections are often used to confirm intra-articular pathology prior to arthroscopic treatment for femoroacetabular impingement (FAI). However, little is known whether the type of response correlates with the post-operative functional outcomes. The purpose of this study is to document the ability of a diagnostic hip injection to predict short-term functional outcomes following arthroscopic surgical management.

METHODS

A prospective cohort of 52 patients diagnosed with FAI who had an intra-articular hip injection prior to arthroscopic surgery was evaluated. A pain diary was used during the 2 weeks after hip injection to document response. In addition, the modified Harris Hip Score (mHHS) was administered preoperatively and 6 months post-operatively to assess functional outcomes. The relationship between response to an intra-articular hip injection and mHHS scores 6 months after FAI surgery was evaluated.

RESULTS

Overall, 42 of 52 (81 %) patients diagnosed with FAI achieved pain relief from the hip injection. Outcomes according to mHHS scores improved significantly at the 6-month follow-up visit (19 points, 95 % CI 15-24, p = 0.001). The therapeutic utility of the hip injection suggested that lack of pain relief predicted a lack of functional improvement following arthroscopic surgery.

CONCLUSION

In this study, the data suggests that a positive response from an intra-articular hip injection is not a strong predictor of short-term functional outcomes following arthroscopic management of FAI. However, a negative response from an intra-articular hip injection may predict a higher likelihood of having a negative result from surgery.

Surgical management of labral tears during femoroacetabular impingement surgery: a systematic review

PURPOSE

This systematic review explored reported outcomes addressing femoroacetabular impingement (FAI), specifically those comparing labral debridement to labral repair. In addition, the quality of the evidence was evaluated for the purposes of making treatment recommendations.

METHODS

Three databases (MEDLINE, EMBASE, and PubMed) were searched for comparative studies involving labral repair and debridement during FAI surgery. Two reviewers conducted a title, abstract, and full-text review of eligible studies and the references of these studies. Inclusion and exclusion criteria were applied to the searched studies, data were extracted, and a quality assessment was completed for included studies.

RESULTS

Six eligible studies involving 490 patients were identified. The most commonly reported outcome measure was the modified Harris hip score (MHHS) (50 %). All studies reported that labral repair had greater postoperative improvements in functional scores (modified Harris hip, non-arthritic hip, hip outcome, and Merle d'Aubigne scores) compared to labral debridement. Five studies reported statistically significant improvements with labral repair. MHHS were pooled to demonstrate a clinically important difference in favor of labral repair by 7.4 points in three studies. The mean individual study quality can be considered fair. However, the overall quality of the body of evidence in this review is rated as low according to GRADE guidelines.

CONCLUSIONS

This review demonstrates a reporting of better clinical outcomes with labral repair compared to labral debridement in all studies with five of six studies reporting statistically significant improvements (of repair over debridement). However, given the lack of high quality evidence and associated limitations in study design, these results should be interpreted with caution. Consequently, definitive treatment recommendations require further investigation with well-conducted clinical trials. This systematic review enables the discussion of best evidence practice for the surgical managing of a labral tear associated with FAI.

LEVEL OF EVIDENCE

III.

Hip arthroscopy: prevalence of intra-articular pathologic findings after traumatic injury of the hip

PURPOSE

The purpose of this study was to document and compare the incidence of intra-articular hip pathologic findings identified using arthroscopy versus conventional imaging in patients with acute trauma to the hip.

METHODS

This was a blinded prospective case series study designed to review the incidence of intra-articular pathologic disorders in patients with post-traumatic injury between the ages of 18 and 65 years who were referred to a single surgeon. Injuries included hip dislocation, proximal femur fracture, pelvic ring fracture, acetabular fracture, penetrating injury (gunshot wound), and soft tissue injury. Preoperative radiographs, computed tomographic (CT) scans, or magnetic resonance imaging/magnetic resonance angiography (MRI/MRA) scans (or a combination of these) were obtained. Findings were documented and compared with intraoperative findings.

RESULTS

A total of 29 post-traumatic hips were enrolled in this study. Hip arthroscopy identified 17 of 29 hips (59%) as having loose bodies, 11 of 29 (38%) hips as having an intra-articular step deformity, 14 of 29 (49%) hips as having an osteochondral lesion, and 27 of 29 (93%) hips as having a labral tear. Plain radiographs and CT scans yielded low sensitivity when compared with arthroscopy for the identification of loose bodies and step deformities. MRI/MRA comparison with arthroscopic findings suggest that MRI/MRA is an accurate tool for identification of labral tears, because 91% of tears seen on arthroscopy were also identified by MRI/MRA. In 4 hips, however, MRI/MRA failed to identify osteochondral lesions that were subsequently identified by arthroscopy.

CONCLUSIONS

Traumatic injuries of the hip result in substantial intra-articular pathologic findings, including loose bodies, labral tears, step deformities, and osteochondral lesions. The arthroscope is a powerful tool in identifying these injuries. Plain radiographs and CT scans appear to underestimate the true incidence of loose bodies and step deformities within the joint when compared with hip arthroscopy after a traumatic injury of the hip.

LEVEL OF EVIDENCE

Level IV, diagnostic case series.

Standardized methodological assessment of research presentations (SHARP): development of a new instrument

BACKGROUND

There are currently no validated guidelines to assess the quality of the content and the delivery style of scientific podium surgical presentations. We have developed a simple, short, and reliable instrument to objectively assess the overall quality of scientific podium presentations.

METHODS

A simple and efficient rating instrument was developed to assess the scientific content and presentation style/skills of the surgical residents' presentations from 1996 to 2013. Absolute and consistency agreement for the different sections of the instrument was determined and assessed overtime, by stage of the project and study design. Intraclass correlation coefficients with 95% confidence intervals were calculated and reported using a mixed-effects model.

RESULTS

Inter-rater reliability for both absolute and consistency agreement was substantial for total score and for each of the 3 sections of the instrument. The absolute agreement for the overall rating of the presentations was .87 (.63 to .98) and .78 (.50 to .95), and the consistency agreement was .90 (.70 to .99) and .87 (.67 to .97) for the 2012 and 2013 institutional research presentations, respectively. Rater agreement for evaluating project stage and different study designs varied from .70 to .81 and was consistent over the years. The consistency agreement in rating of the presentation was .77 for both faculty and resident raters.

CONCLUSIONS

Standardized methodological assessment of research presentations (SHARP) instrument rates the scientific quality of the research and style of the delivered presentation. It is highly reliable in scoring the quality of the all study designs regardless of their stage. We recommend that researchers focus on presenting the key concepts and significant elements of their evidence using visually simple slides in a professionally engaging manner for effective delivery of their research and better communication with the audience.

Complications following hip arthroscopy: a retrospective review of the McMaster experience (2009-2012)

BACKGROUND

The use of hip arthroscopy has been steadily rising as technology, experience and surgical education continue to advance. Previous reports of the complication rate associated with hip arthroscopy have varied. The purpose of this study was to report our experience with hip arthroscopy complications at a single Canadian institution (McMaster University).

METHODS

We performed a retrospective chart review of 2 hip arthroscopists at the same institution to identify patients who had undergone the index surgery and had been followed for a minimum of 6 months postoperatively. We used a standard data entry form to collect information on patient demographic and clinical characteristics, including age, sex, surgical indication and type of complication if any.

RESULTS

A total of 211 patients underwent 236 hip arthroscopies. The mean age at time of surgery was 37 ± 13 years and mean follow-up was 394 ± 216.5 days. The overall complication rate associated with hip arthroscopy was 4.2% (95% confidence interval 2.3%-7.6%). We identified 4 major and 6 minor complications.

CONCLUSION

Overall, hip arthroscopy appears to be safe, with minor complications occurring more frequently than major ones. However, surgeons should recognize the possibility of serious complications associated with this procedure. Future research should focus on prospective designs looking for potential prognostic factors associated with hip arthroscopy complications.

What are the levels of evidence on which we base decisions for surgical management of lower extremity bone tumors?

BACKGROUND

Benign and malignant lower extremity primary bone tumors are among the least common conditions treated by orthopaedic surgeons. The literature supporting their surgical management has historically been in the form of observational studies rather than prospective controlled studies. Observational studies are prone to confounding bias, sampling bias, and recall bias.

QUESTIONS/PURPOSES

(1) What are the overall levels of evidence of articles published on the surgical management of lower extremity bone tumors? (2) What is the overall quality of reporting of studies in this field based on the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist? (3) What are the most common pitfalls in reporting that authors might improve on?

METHODS

All studies describing the surgical management of lower extremity primary bone tumors from 2002 to 2012 were systematically reviewed. Two authors independently appraised levels of evidence. Quality of reporting was assessed with the STROBE checklist. Pitfalls in reporting were quantified by determining the 10 most underreported elements of research study design in the group of studies analyzed, again using the STROBE checklist as the reference standard. Of 1387 studies identified, 607 met eligibility criteria.

RESULTS

There were no Level I studies, two Level II studies, 47 Level III studies, 308 Level IV studies, and 250 Level V studies. The mean percentage of STROBE points reported satisfactorily in each article as graded by the two reviewers was 53% (95% confidence interval, 42%-63%). The most common pitfalls in reporting were failures to justify sample size (2.2% reported), examine sensitivity (2.2%), account for missing data (9.8%), and discuss sources of bias (14%). Followup (66%), precision of outcomes (64%), eligibility criteria (55%), and methodological limitations (53%) were variably reported.

CONCLUSIONS

Observational studies are the dominant evidence for the surgical management of primary lower extremity bone tumors. Numerous deficiencies in reporting limit their clinical use. Authors may use these results to inform future work and improve reporting in observational studies, and treating surgeons should be aware of these limitations when choosing among the various options with their patients.

Meta-analysis of antibiotic prophylaxis in breast reduction surgery

BACKGROUND

Breast reduction surgery is a very common procedure; however, there is still no consensus as to whether antibiotics should be used perioperatively.

OBJECTIVE

To review the world literature and perform a meta-analysis of studies comparing wound infection rates with antibiotic use in breast reduction surgery.

METHODS

A literature search was performed using the MEDLINE, Cochrane Database of Systematic Reviews, Cochrane Database of Clinical Trials, Embase and CINAHL databases. Subject headings and relevant subheadings for "Breast", "Breast Reduction", "Reduction Mammaplasty", "Mammaplasty" were combined with "Antibiotics" and "Antibacterial Agents". The list of titles was assessed by the study's authors and abstracts were reviewed. All relevant articles were then independently reviewed by the two primary authors, and Jadad scoring was used to assess the quality of the included articles.

RESULTS

From the original search, three randomized controlled trials were included in the meta-analysis of preoperative antibiotics. The meta-analysis revealed a 75% reduction in wound infections with preoperative antibiotics (OR 0.25 [95% CI 0.09 to 0.72]). Because only one randomized controlled trial analyzed postoperative antibiotics, no meta-analysis could be performed.

CONCLUSIONS

Preoperative antibiotics should routinely be used before breast reduction surgery. The use of postoperative antibiotics remains controversial. Additional randomized studies investigating postoperative antibiotics are needed.

National variations in retinopathy of prematurity screening criteria in Canada: existent guidelines and actual practice patterns

OBJECTIVE

To survey the current inclusion criteria used for retinopathy of prematurity (ROP) screening across tertiary level 3 neonatal intensive care units (NICUs) in Canada.

PARTICIPANTS

Clinical directors from 29 level 3 NICUs in Canada.

METHODS

Survey of all 29 level 3 NICUs in Canada in September 2010. The survey inquired about the current ROP screening criteria in use in each centre including which neonates are enrolled in the screening program and the timing of when screening begins. The survey was sent via email to the clinical directors at each site. Nonrespondents were contacted by telephone.

RESULTS

In total, 23 centres replied, representing a 79% response rate with the survey. Seven different ROP screening inclusion criteria were found to be in use, although one of the centres did not have a clear inclusion protocol. The variation between centres was significant, with some using a combination of birth weight and gestational age and others using birth weight or gestational age alone as their criterion. There was also variation in the timing of initial eye examinations, with 8 different criteria currently in use. Discrepancies were also found among treatment patterns at the centres.

CONCLUSIONS

Despite the publication of updated Canadian guidelines in 2000, there continues to be significant variation in the actual inclusion criteria being used across the country. Therefore, a need exists for comprehensive, evidence-based Canadian guidelines to optimize the screening inclusion criteria for ROP.

Mortality and reintervention following elective abdominal aortic aneurysm repair

BACKGROUND

The objective of this study is to provide an up-to-date meta-analysis on the short- and long-term mortality rates of elective repair of abdominal aortic aneurysms (AAAs) via the open and endovascular approaches.

METHODS

MEDLINE, EMBASE, and Cochrane Central Register of Controlled trials, conference proceeding from major vascular meetings were searched for randomized trials comparing open vs elective endovascular aneurysm repair (EVAR) of AAAs. A random-effects model was used for analysis. Risk ratio (RR) and 95% confidence intervals (CIs) of open vs EVAR were calculated for short- and long-term mortality and reintervention rates.

RESULTS

The analysis encompassed four randomized controlled trials with a total of 2783 patients. The open repair group resulted in significantly increased 30-day postoperative all-cause mortality compared with EVAR repair group (3.2% vs 1.2%; RR, 2.81; 95% CI, 1.60-4.94); however, there is no statistical difference in the long-term all-cause mortality between both groups (RR, 0.97; 95% CI, 0.86-1.10). Interestingly, fewer patients underwent reintervention procedures in the open repair group compared with those who had EVAR repair (9.3% vs 18.9%; RR, 0.49; 95% CI, 0.40-0.60), but this finding is doubtful due to the large heterogeneity. Lastly, no statistical difference in long-term mortality rates attributable to cardiovascular disease (CVD), aneurysm related, or stroke were found between the two types of repair.

CONCLUSIONS

Results of this meta-analysis demonstrate that the 30-day all-cause mortality rate is higher with open than with EVAR repair; however, there is no statistical difference in the long-term all-cause and cause-specific mortality between both groups. The reintervention rate attributable to procedural complication was higher in the EVAR group. Because of the equivalency of long-term outcomes and the short-term benefits of EVAR, an endovascular-first approach to AAAs can be supported by the meta-analysis.

A meta-analysis of the effect of prophylactic central compartment neck dissection on locoregional recurrence rates in patients with papillary thyroid cancer

BACKGROUND

It is not known whether prophylactic central compartment neck dissection (pCCND) in conjunction with total thyroidectomy decreases rates of locoregional recurrence in patients with papillary thyroid cancer (PTC).

METHODS

A meta-analysis was performed of reported recurrence rates of clinically node-negative PTC in patients treated with total thyroidectomy (TT) alone, or TT and pCCND. The primary outcome was locoregional recurrence of PTC.

RESULTS

Eleven studies capturing 2,318 patients met the inclusion criteria. Overall, the recurrence rate for patients undergoing TT/pCCND was 3.8 % [95 % confidence interval (CI) 2.3-5.8]. In the six comparative studies, which included 1,740 patients, 995 patients undergoing TT and 745 patients undergoing TT/pCCND, the overall recurrence rate was 7.6:7.9 % in the TT group and 4.7 % in the TT/pCCND group. The relative risk of recurrence was 0.59 (95 % CI 0.33-1.07), favoring a lower recurrence rate in the TT/pCCND arm. The number of patients that would need to be treated (NNT) in order to prevent a single recurrence is 31. The relative risk for permanent hypocalcemia was 1.82 (95 % CI 0.51-6.5) and for permanent recurrent laryngeal nerve injury was 1.14 (95 % CI 0.46-2.83).

CONCLUSIONS

There was no difference in recurrence or long-term complication rates between patients undergoing TT or TT/pCCND. There was a trend toward lower recurrence rates in TT/pCCND patients, with a NNT of 31 patients. On the basis of these data, routine pCCND might be considered in the hands of high-volume surgeons treating patients with clinically node-negative PTC.

Time to surgery in acute rotator cufftear: A systematic review

Aims

We performed a systematic review of the literature to determine whether earlier surgical repair of acute rotator cuff tear (ARCT) leads to superior post-operative clinical outcomes.

Methods

The MEDLINE, Embase, CINAHL, Web of Science, Cochrane Libraries, controlled-trials.com and clinicaltrials.gov databases were searched using the terms: ‘rotator cuff’, or ‘supraspinatus’, or ‘infraspinatus’, or ‘teres minor’, or ‘subscapularis’ AND ‘surgery’ or ‘repair’. This gave a total of 15 833 articles. After deletion of duplicates and the review of abstracts and full texts by two independent assessors, 15 studies reporting time to surgery for ARCT repair were included. Studies were grouped based on time to surgery < 3 months (group A, seven studies), or > 3 months (group B, eight studies). Weighted means were calculated and compared using Student’s t-test.

Results

Group B had a significantly higher pre-operative Constant score (CS) (p < 0.001), range of movement in external rotation (p = 0.003) and abduction (p < 0.001) compared with group A. Both groups showed clinical improvement with surgical repair; group A had a significantly improved Constant score, University of California, Los Angeles (UCLA) shoulder score, abduction and elevation post-operatively (all p < 0.001). Group B had significantly improved Constant score (p < 0.001) and external rotation (p < 0.001) post-operatively. The mean Constant score improved by 33.5 for group A and by 27.5 for group B.

Conclusion

These findings should be interpreted with caution due to limitations and bias inherent to case-series. We suggest a trend that earlier time to surgery may be linked to better Constant score, and active range of movement in abduction and elevation. Additional prospective studies are required.

The orthopaedic in-training examination: perspectives of program directors and residents from the United States and Canada

OBJECTIVE

Objective assessment of resident performance continues to task program directors (PDs) with a formidable challenge. This study evaluated attitudes toward the Orthopaedic In-Training Examination (OITE), compared its value between countries, assessed its value against other metrics of resident performance, and examined program and resident factors predictive of high achievement.

DESIGN

Survey.

SETTING

Orthopedic surgery residency programs across the United States and Canada.

PARTICIPANTS

One hundred sixty-six PDs and 945 residents.

RESULTS

Eighty-eight PDs and 331 residents completed the surveys (response rates, 54% and 35%, respectively). PDs and residents in the United States assigned greater importance to the OITE than did those in Canada and reported OITE scores from the United States were significantly higher. PDs in the United States reported greater consequences for residents with poor scores than did PDs from Canada, including remediation and reprimand. Observed structured clinical examinations, internal examinations, and in-training evaluation reports were assigned greater importance by PDs and residents in Canada, but low or no importance by those in the United States. In preparation for the OITE, residents strongly favored prior OITE and American Academy of Orthopaedic Surgeons self-assessment questions, the 'AAOS Comprehensive Orthopaedic Review' textbook, the Journal of the American Academy of Orthopaedic Surgeons, and an OITE-based multiple-choice question website. Regression analysis identified resident and program emphasis on OITE studying and higher level of training as positive predictors for higher OITE scores.

CONCLUSIONS

The OITE is more important to PDs and residents in the United States than it is in Canada, and the reported OITE scores reflect these attitudes. PDs in Canada also employ a greater diversity of evaluative tools, a practice in keeping with recent advances toward competency-based medical education. The findings of this report may help PDs be aware of alternative methods of formative resident evaluation and ultimately improve the training of future independent surgeons.

High infection rate outcomes in long-bone tumor surgery with endoprosthetic reconstruction in adults: a systematic review

BACKGROUND

Limb salvage surgery (LSS) with endoprosthetic replacement is the most common method of reconstruction following bone tumor resection in the adult population. The risk of a postoperative infection developing is high when compared with conventional arthroplasty and there are no appropriate guidelines for antibiotic prophylaxis.

QUESTIONS/PURPOSES

We sought to answer the following questions: (1) What is the overall risk of deep infection and the causative organism in lower-extremity long-bone tumor surgery with endoprosthetic reconstruction? (2) What antibiotic regimens are used with endoprosthetic reconstruction? (3) Is there a correlation between infection and either duration of postoperative antibiotics or sample size?

METHODS

We conducted a systematic review of the literature for clinical studies that reported infection rates in adults with primary bony malignancies of the lower extremity treated with surgery and endoprosthetic reconstruction. The search included articles published in English between 1980 and July 2011.

RESULTS

The systematic literature review yielded 48 studies reporting on a total of 4838 patients. The overall pooled weighted infection rate for lower-extremity LSS with endoprosthetic reconstruction was approximately 10% (95% CI, 8%-11%), with the most common causative organism reported to be Gram-positive bacteria in the majority of cases. The pooled weighted infection rate was 13% after short-term postoperative antibiotics and 8% after long-term postoperative antibiotics. There was no correlation between sample size and infection rate.

CONCLUSIONS

Infection rates of 10% are high when compared with rates for conventional arthroplasty. Our results suggest that long-term antibiotic prophylaxis decreases the risk of deep infection. However, the data should be interpreted with caution owing to the retrospective nature of the studies.