Short-term outcomes of reverse shoulder arthroplasty using a custom baseplate for severe glenoid deficiency.

HYPOTHESIS AND BACKGROUND: Complex glenoid bone loss and deformity present a challenge for the shoulder arthroplasty surgeon. Eccentric reaming, bone grafting, augmented glenoid components, and salvage hemiarthroplasty are common strategies for managing these patients. The glenoid vault reconstruction system (VRS; Zimmer-Biomet) is a novel solution for both primary and revision arthroplasty using a custom glenoid baseplate. We hypothesized that patients undergoing reverse shoulder arthroplasty (RSA) with VRS would have acceptable short-term outcomes and complication rates. METHODS: Patients who underwent RSA with VRS for severe glenoid deformity or bone loss by one of 4 board-certified, fellowship-trained shoulder and elbow surgeons at 3 academic tertiary referral centers between September 2015 and November 2018 were eligible for inclusion. Patient data were obtained via medical record review and telephone questionnaires. The Numeric Pain Rating Scale (NPRS), Single Assessment Numeric Evaluation (SANE), American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form (ASES), Penn Shoulder Scores, and range of motion (ROM) measurements were obtained pre- and postoperatively. Radiographs were reviewed at final follow-up for evidence of component loosening or hardware failure. Any complication was documented. Outcomes were compared using Wilcoxon signed-rank tests with P <. 05 considered significant. RESULTS: Twelve shoulders (11 patients) were included with a mean age of 68 years; 7 were primary arthroplasties and 5 were revisions. At an average follow-up time of 30 months, median improvement in NPRS score was 7 points, SANE score 43%, ASES score 45 points, and Penn Shoulder Score 49 points. There were statistically significant improvements in median ROM measurements (forward elevation 20°, external rotation 40°, internal rotation 2 spinal levels). At final follow-up, all implants were radiographically stable without loosening. There were no complications. DISCUSSION AND CONCLUSION: This study demonstrates that RSA using the custom VRS glenoid implant is a safe and effective technique addressing complex glenoid deformity or bone loss in both primary and revision settings. At short-term follow-up, all patient-reported outcomes and ROM measures improved significantly, and there were no complications. Future work should determine mid- and long-term outcomes, preferably in a prospective manner with defined patient populations.

Incidence of Knee Injuries on Artificial Turf Versus Natural Grass in National Collegiate Athletic Association American Football: 2004-2005 Through 2013-2014 Seasons.

BACKGROUND: The use of artificial turf in American football continues to grow in popularity, and the effect of these playing surfaces on athletic injuries remains controversial. Knee injuries account for a significant portion of injuries in the National Collegiate Athletic Association (NCAA) football league; however, the effect of artificial surfaces on knee injuries remains ill-defined. HYPOTHESIS: There is no difference in the rate or mechanism of knee ligament and meniscal injuries during NCAA football events on natural grass and artificial turf playing surfaces. STUDY DESIGN: Descriptive epidemiology study. METHODS: The NCAA Injury Surveillance System Men's Football Injury and Exposure Data Sets for the 2004-2005 through 2013-2014 seasons were analyzed to determine the incidence of anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial collateral ligament (MCL), medial meniscus, and lateral meniscal tear injuries. Injury rates were calculated per 10,000 athlete exposures, and rate ratios (RRs) were used to compare injury rates during practices and competitions on natural grass and artificial turf in NCAA football as a whole and by competition level (Divisions I, Divisions II and III). Mechanisms of injury were calculated for each injury on natural grass and artificial turf surfaces. RESULTS: A total of 3,009,205 athlete exposures and 2460 knee injuries were reported from 2004 to 2014: 1389 MCL, 522 ACL, 269 lateral meniscal, 164 medial meniscal, and 116 PCL. Athletes experienced all knee injuries at a significantly higher rate when participating in competitions as compared with practices. Athletes participating in competitions on artificial turf experienced PCL injuries at 2.94 times the rate as those playing on grass (RR = 2.94; 95% CI, 1.61-5.68). When stratified by competition level, Division I athletes participating in competitions on artificial turf experienced PCL injuries at 2.99 times the rate as those playing on grass (RR = 2.99; 95% CI, 1.39-6.99), and athletes in lower NCAA divisions (II and III) experienced ACL injuries at 1.63 times the rate (RR = 1.63; 95% CI, 1.10-2.45) and PCL injuries at 3.13 times the rate (RR = 3.13; 95% CI, 1.14-10.69) on artificial turf as compared with grass. There was no statistically significant difference in the rate of MCL, medial meniscal, or lateral meniscal injuries on artificial turf versus grass when stratified by event type or level of NCAA competition. No difference was found in the mechanisms of knee injuries on natural grass and artificial turf. CONCLUSION: Artificial turf is an important risk factor for specific knee ligament injuries in NCAA football. Injury rates for PCL tears were significantly increased during competitions played on artificial turf as compared with natural grass. Lower NCAA divisions (II and III) also showed higher rates of ACL injuries during competitions on artificial turf versus natural grass.

Increased opioid consumption in diabetics with operative ankle fractures: a retrospective case-control study.

INTRODUCTION: Opioids are commonly used for post-operative pain control. It is known that diabetic patients with ankle fractures will experience prolonged healing, higher risk of hardware failure, and an increased risk of infection. However, the opioid requirements amongst this patient cohort have not been previously evaluated. Thus, the purpose of this study is to retrospectively compare opioid utilization amongst ankle fracture patients with and without diabetes mellitus (DM). METHODS: An IRB approval was obtained for the retrospective review of patients who presented with an ankle fracture and underwent surgery between November 2013 and January 2017. A total of 180 patients (144 without DM, 36 with DM) with a mean age of 50 years (± 18 years) were included. Opioid consumption was quantified utilizing a morphine-milliequivalent conversion algorithm. A repeated measures ANOVA was conducted to compare opioid consumption. A two-tailed p value of 0.05 was set as the threshold for statistical significance. RESULTS: Repeated measures ANOVA revealed a statistically significant decrease in total opioid consumption during the 4-month duration (p < 0.001). The model demonstrated a mean difference in opioid consumption of - 214.3 morphine meq between the patients without and with DM (p = 0.022). Post hoc pair-wise comparison revealed less opioid consumption amongst non-diabetic patients at 2 (- 418.5 Meq; p = 0.009), 3 months (- 355.6 Meq; p = 0.021), and 4 months (- 152.6 Meq; p = 0.006) after surgery. CONCLUSION: Our study revealed increased opioid consumption amongst diabetic patients who are treated surgically for ankle fractures. With increasing efforts aimed at reducing opioid administration, orthopaedic surgeons should be aware of higher opioid consumption amongst this patient cohort. Further studies are needed to verify the results of this study.