With health-care utilization becoming an important factor in patient care, we investigated the effect that surgical day of week has on length of hospital stay (LOS) for shoulder arthroplasty patients. Methods: All patients undergoing primary anatomic or reverse total shoulder arthroplasty by a single surgeon on Monday, Wednesday, or Friday over a 10-year period were retrospectively reviewed. A total of 1784 patients met inclusion criteria. Demographics, LOS, and discharge disposition were recorded for all study participants. Results: The overall average LOS was 2.9 AE 1.8 days and was significantly longer for patients having surgery Friday (3.0 AE 1.9 days) versus Wednesday (2.7 AE 1.7 days, P ¼.002). For those discharged home, the mean LOS was 2.6 AE 1.3 days versus 4.3 AE 3.3 days for those discharged to extended care facilities (ECFs). Patients discharged to ECF with Friday surgery had a significantly longer LOS than Monday (P ¼.028) and Wednesday (P ¼.010) patients, with 30% of patients with Friday surgery being discharged postoperative day 4 versus 14% and 9% on Monday and Wednesday, respectively. LOS trended toward being longer for Friday surgery in the home disposition group but did not reach significance. Discussion: These results should be considered during surgical scheduling in order to minimize health-care expenditures. Patients at high risk for requiring ECF at discharge should be scheduled at the beginning of the week, while more resources are available to expedite their discharge.

ä Mesenchymal stromal cells (MSCs) are a subset of progenitor cells that help to promote tissue healing and regeneration through the secretion of various cytokines and growth factors. Although technically pluripotent, MSCs in vivo rarely repair damaged tissue through direct differentiation and engraftment.ä Augmentation of traditional marrow stimulation techniques with MSCs has been theorized to improve repair tissue quality and defect fill. Clinical trials evaluating this technique are limited but have shown modest improvements compared with isolated marrow stimulation.ä Various scaffolds also have been utilized in combination with MSCs to treat focal chondral defects. Although the techniques described are heterogeneous, many have shown promising early clinical outcomes.ä Newer techniques involving 3-dimensional bioprinted scaffolds seeded with MSCs allow for the recreation of complex architecture, more closely resembling articular cartilage. These techniques are evolving and have not yet been studied in human clinical trials.Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJS/G795).

Purpose: To systematically review the available literature to further describe and report the available data on SLAP repair techniques and the association with outcomes. Methods: A systematic review of literature was performed on manuscripts describing type II SLAP repairs in athletes. Selection criteria included studies reporting exclusively type II SLAP tears without concomitant pathology, minimum 2-year postoperative follow-up, use of anchor fixation, and return to previous level of play data available. We extracted patient outcome as well as surgical construct details from each article. Average outcomes and return to play rates were calculated and substratified further by athlete type. Return to play rates were compared by repair constructs with the Student t test. Results: Initial search resulted in 107 articles. After exclusion criteria were applied, 17 articles were included in the final analysis. Overall, 84% of patients had good-to-excellent results. Of all athletes, 66% returned to previous level of play. There was significant variation in reported technique in terms of anchor number, location, material, suture type, and knotless versus knotted constructs. No significant difference was reported in outcomes in comparison of suture type (P-value .96) or knotted versus knotless constructs (P-value .91). Given the significant variability in reporting, no statistical analysis was felt able to be performed on anchor location and number. Conclusions: Repair of type II SLAP tears in athletes is a difficult problem to treat with overall low return to play despite a high rate of "good" outcomes when assessed by outcome measures. Significant variability exists in surgical technique, as well as reporting of surgical technique, potentially limiting the ability to define the best or most effective technique for SLAP repair. Level of Evidence: IV, systematic review of level III and level IV studies.

BACKGROUND Previous studies have shown that non-surgical management can be an effective treatment strategy for many patients with rotator cuff tears. Despite the prevalence of rotator cuff disease, few studies have examined the patient and tear related factors that predict outcomes of nonsurgical management in this cohort of patients. AIM To identify factors that are associated with changes in patient reported outcomes over time in individuals with full-thickness rotator cuff tears treated without surgery. METHODS A cohort of 59 patients who underwent non-surgical management of full thickness rotator cuff tears with a minimum of 1-year follow-up were identified from our institutional registry. Patient demographics, comorbidities and tear characteristics were collected at initial presentation. Outcome measures were collected at baseline and at each clinical follow-up, which included Western Ontario Rotator Cuff (WORC) index, American Shoulder and Elbow Surgeons score, Visual Analog Scale for pain and Single Assessment Numerical Evaluation. Multi- and univariate regression analyses were used to determine the impact of each patient and tear related variable on final WORC scores and change in WORC scores throughout the study. RESULTS In this non-surgical cohort, all patient-reported outcome measures significantly improved compared to baseline at 1 and 2-year follow-up. There was no significant difference in outcomes between 1 and 2 years. The average improvement surpassed the published minimal clinically important differences values for WORC, American Shoulder and Elbow Surgeons, Visual Analog Scale pain and Single Assessment Numerical Evaluation scores. Regression analysis identified female gender (β = - 19.88, P = 0.003), smoking (β = -29.98, P = 0.014) and significant subscapularis fatty infiltration (β = -15.35, P = 0.024) as predictors of less favorable WORC scores at 1 year, and female gender (β = -19.09, P = 0.015) alone as a predictor of lower WORC scores at 2 years. Patients with symptom duration greater than 1 year at presentation reported less improvement in WORC scores at 1-year follow-up (β = -14.63, P = 0.052) and patients with traumatic tears reported greater improvements in WORC scores at 2-year follow-up (β = 17.37, P = 0.031). CONCLUSION Patients with full thickness rotator cuff tears can achieve and maintain clinically meaningful benefit from non-surgical management through 2-year follow-up. Female patients, smokers, and those with significant subscapularis fatty infiltration tend to have lower overall WORC scores at 1-year follow-up, and females also have lower WORC scores at 2-year follow-up. Patients presenting with symptoms greater than 1 year had less clinical improvement at 1-year follow-up, and those w...