Faculty Bibliography

Background /UNASSIGNED:Evaluation of resident physicians' communications skills is a challenging task and is increasingly accomplished with standardized examinations. There exists a need to identify the effective, efficient methods for assessment of communications skills. Objective /UNASSIGNED:We compared objective structured clinical examination (OSCE) and direct observation as approaches for assessing resident communications skills. Methods /UNASSIGNED:We conducted a retrospective cohort analysis of orthopaedic surgery resident physicians at a single tertiary care academic institution, using the Institute for Healthcare Communication "4 Es" model for effective communication. Data were collected between 2011 and 2015. A total of 28 residents, each with OSCE and complete direct observation assessment checklists, were included in the analysis. Residents were included if they had 1 OSCE assessment and 2 or more complete direct observation assessments. Results /UNASSIGNED: = .16), after adjusting for chance agreement. Conclusions /UNASSIGNED:Our results suggest that OSCE and direct observation tools provide different insights into resident communications skills (simulation of rare and challenging situations versus real-life daily encounters), and may provide useful perspectives on resident communications skills in different contexts.

The purpose of this study was to examine the influence of topical vancomycin on cell migration and survival of tissue healing cells. Human osteoblasts, myoblasts and fibroblasts were exposed to vancomycin at concentrations of 1, 3, 6, or 12 mg/cm² for either a 1-h or 48-h (continuous) duration. Continuous exposure to all vancomycin concentrations significantly reduced cell survival (<22% cells survived) and migration in osteoblasts and myoblasts (P < 0.001). 1-h vancomycin exposure reduced osteoblast and myoblast survival and migration only at 12 mg/cm² (P < 0.001). Further in vivo studies are warranted to optimize the dosage of intrawound vancomycin.

BACKGROUND:The number of periprosthetic proximal femoral fractures is expected to increase with the increasing prevalence of hip arthroplasties. While native hip fractures have a well-known association with mortality, there are currently limited data on this outcome among the subset of patients with periprosthetic proximal femoral fractures. METHODS:Using the New York Statewide Planning and Research Cooperative System, we identified patients from 60 to 99 years old who were admitted to a hospital in the state with a periprosthetic proximal femoral fracture (n = 1,655) or a native hip (femoral neck or intertrochanteric) fracture (n = 97,231) between 2006 and 2014. Within the periprosthetic fracture cohort, the indication for the existing implant was not available in the data set. We used mixed-effects regression models to compare mortality at 1 and 6 months and 1 year for periprosthetic compared with native hip fractures. RESULTS:The risk of mortality for patients who sustained a periprosthetic proximal femoral fracture was no different from that for patients who sustained a native hip fracture at 1 month after injury (3.2% versus 4.6%; odds ratio [OR], 0.90; 95% confidence interval [CI], 0.68 to 1.19; p = 0.446), but was lower at 6 months (3.8% versus 6.5%; OR, 0.74; 95% CI, 0.57 to 0.95; p = 0.020) and 1 year (9.7% versus 15.9%; OR, 0.71; 95% CI, 0.60 to 0.85; p < 0.001). Among periprosthetic proximal femoral fractures, factors associated with a significantly increased risk of mortality at 1 year included advanced age, male sex, and higher Deyo comorbidity scores. CONCLUSIONS:In the acute phase, any type of hip fracture appears to confer a similar risk of death. Over the long term, however, periprosthetic proximal femoral fractures are associated with lower mortality rates than native hip fractures, even after accounting for age and comorbidities. LEVEL OF EVIDENCE/METHODS:Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

BACKGROUND:An improved understanding of how gender differences and the natural aging process are associated with differences in clinical improvement in outcome metric scores and ROM measurements after reverse total shoulder arthroplasty (rTSA) may help physicians establish more accurate patient expectations for reducing postoperative pain and improving function. QUESTIONS/PURPOSES/OBJECTIVE:(1) Is gender associated with differences in rTSA outcome scores like the Simple Shoulder Test (SST), the UCLA Shoulder score, the American Shoulder and Elbow Surgeons (ASES) Shoulder score, the Constant Shoulder score, and the Shoulder Pain and Disability Index (SPADI) and ROM? (2) Is age associated with differences in rTSA outcome scores and ROM? (3) What factors are associated with the combined interaction effect between age and gender? (4) At what time point during recovery does most clinical improvement occur, and when is full improvement reached? METHODS:We quantified and analyzed the outcomes of 660 patients (424 women and 236 men; average age, 72 ± 8 years; range, 43-95 years) with cuff tear arthropathy or osteoarthritis and rotator cuff tear who were treated with rTSA by 13 shoulder surgeons from a longitudinally maintained international database using a linear mixed effects statistical model to evaluate the relationship between clinical improvements and gender and patient age. We used five outcome scoring metrics and four ROM assessments to evaluate clinical outcome differences. RESULTS:When controlling for age, men had better SST scores (mean difference [MD] = 1.41 points [95% confidence interval {CI}, 1.07-1.75], p < 0.001), UCLA scores (MD = 1.76 [95% CI, 1.05-2.47], p < 0.001), Constant scores (MD = 6.70 [95% CI, 4.80-8.59], p < 0.001), ASES scores (MD = 7.58 [95% CI, 5.27-9.89], p < 0.001), SPADI scores (MD = -12.78 [95% CI, -16.28 to -9.28], p < 0.001), abduction (MD = 5.79° [95% CI, 2.74-8.84], p < 0.001), forward flexion (MD = 7.68° [95% CI, 4.15-11.20], p < 0.001), and passive external rotation (MD = 2.81° [95% CI, 0.81-4.8], p = 0.006). When controlling for gender, each 1-year increase in age was associated with an improved ASES score by 0.19 points (95% CI, 0.04-0.34, p = 0.011) and an improved SPADI score by -0.29 points (95% CI, -0.46 to 0.07, p = 0.020). However, each 1-year increase in age was associated with a mean decrease in active abduction by 0.26° (95% CI, -0.46 to 0.07, p = 0.007) and a mean decrease of forward flexion by 0.39° (95% CI, -0.61 to 0.16, p = 0.001). A combined interaction effect between age and gender was found only with active external rotation: in men, younger age was associated with less active external rotation and older age was associated with more active external rotation (β0 [intercept] = 11.029, β1 [slope for age variable] = 0.281, p = 0.009). Conversely, women achieved no difference in active external rotation after rTSA, regardless of age at the time of surgery (β0 [intercept] = 34.135, β1 [slope for age variable] = -0.069, p = 0.009). Finally, 80% of patients achieved full clinical improvement as defined by a plateau in their outcome metric score and 70% of patients achieved full clinical improvement as defined by a plateau in their ROM measurements by 12 months followup regardless of gender or patient age at the time of surgery with most improvement occurring in the first 6 months after rTSA. CONCLUSIONS:Gender and patient age at the time of surgery were associated with some differences in rTSA outcomes. Men had better outcome scores than did women, and older patients had better outcome scores but smaller improvements in function than did younger patients. These results demonstrate rTSA outcomes differ for men and women and for different patient ages at the time of surgery, knowledge of these differences, and also the timing of improvement plateaus in outcome metric scores and ROM measurements can both improve the effectiveness of patient counseling and better establish accurate patient expectations after rTSA. LEVEL OF EVIDENCE/METHODS:Level III, therapeutic study.

Aims The factors that predispose to recurrent instability and revision stabilization procedures after arthroscopic Bankart repair for anterior glenohumeral instability remain unclear. We sought to determine the rate and risk factors associated with ongoing instability in patients undergoing arthroscopic Bankart repair for instability of the shoulder. Materials and Methods We used the Statewide Planning and Research Cooperative System (SPARCS) database to identify patients with a diagnosis of anterior instability of the shoulder undergoing arthroscopic Bankart repair between 2003 and 2011. Patients were followed for a minimum of three years. Baseline demographics and subsequent further surgery to the ipsilateral shoulder were analyzed. Multivariate analysis was used to identify independent risk factors for recurrent instability. Results A total of 5719 patients were analyzed. Their mean age was 24.9 years (sd 9.3); 4013 (70.2%) were male. A total of 461 (8.1%) underwent a further procedure involving the ipsilateral shoulder at a mean of 31.5 months (sd 23.8) postoperatively; 117 (2.1%) had a closed reduction and 344 (6.0%) had further surgery. Revision arthroscopic Bankart repair was the most common subsequent surgical procedure (223; 65.4%). Independent risk factors for recurrent instability were: age < 19 years (odds ratio 1.86), Caucasian ethnicity (hazard ratio 1.42), bilateral instability of the shoulder (hazard ratio 2.17), and a history of closed reduction(s) prior to the initial repair (hazard ratio 2.45). Revision arthroscopic Bankart repair was associated with significantly higher rates of ongoing persistent instability than revision open stabilization (12.4% vs 5.1%, p = 0.041). Conclusion The incidence of a further procedure being required in patients undergoing arthroscopic Bankart repair for anterior glenohumeral instability was 8.1%. Younger age, Caucasian race, bilateral instability, and closed reduction prior to the initial repair were independent risk factors for recurrent instability, while subsequent revision arthroscopic Bankart repair had significantly higher rates of persistent instability than subsequent open revision procedures. Cite this article: Bone Joint J 2018;100-B:324-30.

OBJECTIVES/OBJECTIVE:To understand the personality factors associated with orthopedic surgery resident performance. DESIGN/METHODS:A prospective, cross-sectional survey of orthopedic surgery faculty that assessed their perceptions of the personality traits most highly associated with resident performance. Residents also completed a survey to determine their specific personality characteristics. A subset of faculty members rated the performance of those residents within their respective program on 5 dimensions. Multiple regression models tested the relationship between the set of resident personality measures and each aspect of performance; relative weights analyses were then performed to quantify the contribution of the individual personality measures to the total variance explained in each performance domain. Independent samples t-tests were conducted to examine differences between the personality characteristics of residents and those faculty identified as relevant to successful resident performance. SETTING/METHODS:throughout the United States. The level of clinical care provided by participating institutions varied. PARTICIPANTS/METHODS:Data from 175 faculty members and 266 residents across 12 programs were analyzed. RESULTS:The personality features of residents were related to faculty evaluations of resident performance (for all, p < 0.01); the full set of personality measures accounted for 4%-11% of the variance in ratings of resident performance. Particularly, the characteristics of agreeableness, neuroticism, and learning approach were found to be most important for explaining resident performance. Additionally, there were significant differences between the personality features that faculty members identified as important for resident performance and the personality features that residents possessed. CONCLUSION/CONCLUSIONS:Personality assessments can predict orthopedic surgery resident performance. However, results suggest the traits that faculty members value or reward among residents could be different from the traits associated with improved resident performance.

BACKGROUND:An understanding of the substantial clinical benefit (SCB) after total shoulder arthroplasty (TSA) may help to gauge a minimum threshold beyond which a patient perceives his or her outcome as being substantially better. This study quantifies SCB for 7 outcome metrics and active motion measurements after shoulder arthroplasty and determines how these values vary based on prosthesis type, patient age at surgery, sex, and length of follow-up. METHODS:A total of 1,568 shoulder arthroplasties with 2-year minimum follow-up were performed by 13 shoulder surgeons and enrolled in a multicenter registry. The SCB for the American Shoulder and Elbow Surgeons Shoulder Assessment, Constant Score, University of California Los Angeles Shoulder Rating Scale, Simple Shoulder Test, Shoulder Pain and Disability Index, global shoulder function, and visual analog scale pain scores, as well as active abduction, flexion, and external rotation were calculated for different patient cohorts using an anchor-based method. RESULTS:The anchor-based SCB results were American Shoulder and Elbow Surgeons score, 31.5 ± 2.0; Constant Score, 19.1 ± 1.7; University of California Los Angeles Shoulder Rating Scale score, 12.6 ± 0.5; Simple Shoulder Test score,  3.4 ± 0.3; Shoulder Pain and Disability Index score,  45.4 ± 2.2; global shoulder function, 3.1 ± 0.2; visual analog scale, 3.2 ± 0.3; active abduction, 28.5° ± 3.1°; active forward flexion, 35.4° ± 3.5°; and active external rotation, 11.7° ± 1.9°. Anatomic TSA patients, male patients, and patients of longer follow-up duration were associated with higher SCB values than female patients, reverse TSA patients, and patients of shorter follow-up duration. CONCLUSION/CONCLUSIONS:Our analysis demonstrated two-thirds of patients achieved the SCB threshold after TSA. Generally, a change of 30% of the total possible score for each outcome metric approximates or exceeds this SCB threshold.

Purpose: As glenohumeral osteoarthritis progresses, there is increased risk for posterior glenoid bone loss which impacts an increasingly common treatment for these patients, total shoulder arthroplasty. Defining the level of maximum posterior bone loss and accurate assessment of its severity, using glenoid version measurements, are crucial to correctly align the glenoid prosthesis with glenoid to prevent prosthetic failure. While the importance of this information is clear, how these measurements should be performed remains in question with several techniques described in the literature. The purpose of this study was to define the most accurate level to measure glenoid version on CT for the most clinically relevant variants of posterior glenoid bone loss, Walch B2 and B3 types. Materials and Methods: 386 consecutive CT shoulder studies performed for shoulder arthroplasty preoperative planning between 2013- 2016 were retrospectively reviewed. Patients with B2 and B3 glenoid types were included. Two radiologists measured glenoid retroversion independently according to Friedman method on true axial CT images using the "intermediate glenoid line", at three glenoid heights: 25% (upper) 50% (equator) and 75% (lower). Results: 29 B2 and 8 B3 glenoid types were included. There was no statistically significant difference found in the retroversion measurements performed by each reader at the three glenoid levels on the B2 or B3 glenoid types (Mean angles (%) in upper, equator and lower in B2: 16.5, 17,0 and 17.5 and B3: 20.6, 20.7 and 23.2, respectively). There was substantial inter-reader correlation (r>=0.7) in angle measurements. Conclusion: Our study suggests that glenoid version can be accurately measured at any level between 25%-75%of the glenoid height forWalch B2 and B3 types. We recommend that the glenoid equator be used as the reference in order to assure consistent and reliable version measurements in this group of patients

Purpose: Image-guided joint aspiration is often requested for clinically suspected periprosthetic joint infection (PJI). For "dry taps" when no native joint fluid can be aspirated, a lavage with non-bacteriostatic saline can be performed. The purpose of this study is to determine the diagnostic utility of lavage versus native joint fluid aspiration in the setting of clinically suspected PJI. Materials and Methods: IRB approval was obtained and informed consent was waived for this retrospective study. A PACS search from 2011- 2017 for image-guided aspirations yielded 918 procedures, of which 630 were excluded for non-articular and non-arthroplasty aspirations, antibiotic cement spacers, and lack of clinical information in the electronic medical record. The study cohort included 288 procedures from 173 patients who underwent operative or non-operative management. The reference standard was the intraoperative culture for operative patients and clinical follow-up for conservatively managed patients. A Fisher exact test was used for statistical analysis. Results: The study cohort consisted of 98 females, 75 males, mean age 64 (range 34-90) with the following arthroplasty types: 176 hips, 65 knees, and 47 shoulders. Of 288 procedures, 105 were performed with lavage and 183 were native joint fluid aspirations; 112 were subsequently operatively managed. The mean follow-up for non-operative patients was 5 months (range 0-42). For native joint fluid aspiration versus lavage, accuracy was 81% vs. 73% (p=0.14), sensitivity was 58% vs. 28% (p=0.03), specificity was 88% vs. 91% (p=0.66), negative predictive value was 89% vs. 77% (p=0.02), and positive predictive value was 55% vs. 53% (p=1.00), respectively. Conclusion: Lavage is less sensitive with a lower negative predictive value for the diagnosis of PJI compared to native joint fluid aspirations, possibly due to a lower pretest probability of infection and the inherent dilutional effects of the procedure

BACKGROUND:Clinician-scientist numbers have been stagnant over the past few decades despite awareness of this trend. Interventions attempting to change this problem have been seemingly ineffective, but research residency positions have shown potential benefit. OBJECTIVE:We sought to evaluate the effectiveness of a clinician-scientist training program (CSTP) in an academic orthopedic residency in improving academic productivity and increasing interest in academic careers. METHODS:Resident training records were identified and reviewed for all residents who completed training between 1976 and 2014 (n = 329). There were no designated research residents prior to 1984 (pre-CSTP). Between 1984 and 2005, residents self-selected for the program (CSTP-SS). In 2005, residents were selected by program before residency (CSTP-PS). Residents were also grouped by program participation, research vs. clinical residents (RR vs. CR). Data were collected on academic positions and productivity through Internet-based and PubMed search, as well as direct e-mail or phone contact. Variables were then compared based on the time duration and designation. RESULTS:Comparing all RR with CR, RR residents were more likely to enter academic practice after training (RR, 34%; CR, 20%; p = 0.0001) and were 4 times more productive based on median publications (RR, 14; CR, 4; p < 0.0001). Furthermore, 42% of RR are still active in research compared to 29% of CR (p = 0.04), but no statistical difference in postgraduate academic productivity identified. CONCLUSIONS:The CSTP increased academic productivity during residency for the residents and the program. However, this program did not lead to a clear increase in academic productivity after residency and did not result in more trainees choosing a career as clinician-scientists.