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rrectly and were invalid compared with 0% of the ASES scores (P < .0001).

There is excellent correlation and comparable responsiveness between the ASES score and WOOS score. Including these scores simultaneously when tracking patient-determined outcomes appears to be redundant and therefore unnecessary. Because there is higher responder and administrative burden for the WOOS score, we recommend use of the ASES score over the WOOS score in patients undergoing total shoulder arthroplasty.

There is excellent correlation and comparable responsiveness between the ASES score and WOOS score. Including these scores simultaneously when tracking patient-determined outcomes appears to be redundant and therefore unnecessary. Because there is higher responder and administrative burden for the WOOS score, we recommend use of the ASES score over the WOOS score in patients undergoing total shoulder arthroplasty.

Periprosthetic shoulder infection (PSI) remains a devastating complication after reverse shoulder arthroplasty (RSA). Currently, scientific data related to the management of PSI are limited, and the optimal strategy and related clinical outcomes remain unclear. Guidelines from the Infectious Diseases Society of America for the management of periprosthetic joint infection are mainly based on data from patients after hip and knee arthroplasty. The aim of this study was to evaluate whether these guidelines are also valid for patients with PSI after RSA. In addition, the functional outcome according to the surgical intervention was assessed.

An RSA database was retrospectively reviewed to identify infections after primary and revision RSAs, diagnosed between 2004 and 2018. Data collected included age, sex, indication for RSA, causative pathogen, surgical and antimicrobial treatment, functional outcome, and recurrence.

Thirty-six patients with a PSI were identified. Surgical treatment was subdivided into débld further clarify which surgical strategy (ie, 1-stage vs. 2-stage exchange) has a better outcome overall.

PSI is typically caused by low-virulence pathogens, which often are diagnosed with a delay, resulting in chronic infection at the time of surgery. Our results indicate that treatment of patients with chronic PSI with DAIR has a high recurrence rate. In addition, implant exchange (ie, 1- and 2-stage exchange) does not compromise the functional result as compared with implant retention. Bafilomycin A1 Thus, patients with chronic PSI should be treated with implant exchange. Future research should further clarify which surgical strategy (ie, 1-stage vs. 2-stage exchange) has a better outcome overall.

Although rotator cuff repair is performed to restore the function of the rotator cuff muscles and glenohumeral (GH) joint motion, little has been known regarding the recovery process. The purpose of this study was (1) to investigate changes over time in activities of the supraspinatus and deltoid muscles assessed by ultrasound real-time tissue elastography (RTE) after rotator cuff repair and (2) to determine contributions of the activities of these muscles to the GH joint motion.

Twenty patients after rotator cuff repair and 13 control participants were enrolled in this study. Elasticity of the supraspinatus and middle deltoid muscles were measured at rest and 30° of humerothoracic elevation in the scapular plane (scaption) by using RTE. The elasticity at 30° of scaption was normalized to that at rest in each muscle to quantify their muscle activities. In addition, the supraspinatus-to-middle deltoid (SSP/MD) ratio for the normalized elasticity was calculated. The GH elevation angle was measured with a di weeks to 3 months after surgery. The supraspinatus activity at 3 months after surgery was the same level as that in healthy individuals. On the other hand, the deltoid activity decreased from 6 weeks to 6 months after surgery. The increase in activity of the supraspinatus relative to the deltoid was likely to be related to the increase in GH elevation during postoperative at 8 weeks.

The supraspinatus activity increased from 6 weeks to 3 months after surgery. The supraspinatus activity at 3 months after surgery was the same level as that in healthy individuals. On the other hand, the deltoid activity decreased from 6 weeks to 6 months after surgery. The increase in activity of the supraspinatus relative to the deltoid was likely to be related to the increase in GH elevation during postoperative at 8 weeks.

Fall risk is an acknowledged but relatively understudied concern for older patients undergoing shoulder surgery. The cause is multifactorial, and it includes advanced age, impaired upper extremity function, use of shoulder abduction braces, and postoperative use of opioid medications. No previous study has examined preoperative fall risk in patients undergoing elective shoulder surgery. Previous literature looking at fall risk in elective orthopedic procedures has predominantly focused on falls occurring in the hospital setting, although falls have also been shown to occur in the outpatient setting. Gait speed and Timed Up and Go (TUG) are well-researched functional measures in the aging population with established cutoff scores indicating increased fall risk. The purpose of this study was to quantify gait speed and TUG scores in a series of patients who were scheduled to undergo either rotator cuff repair (RCR) or total shoulder arthroplasty (TSA) in order to assess overall risk of fall in these populationatus, Veteran's Rand 12 Physical Component and Mental Component Scores, American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form, or Single Assessment Numeric Evaluation scores between groups (P= .11).

Both patient groups demonstrated a high rate of fall risk in preoperative evaluation. Patients undergoing TSA more often displayed fall risk compared with patients undergoing RCR. Although patients in the TSA group were older, there was no association between age or ambulatory status and fall risk.

Our results suggest that fall risk screening may be important for patients undergoing TSA and RCR surgeries. The higher fall risk in the TSA group may be an important consideration as this procedure shifts toward outpatient status.

Our results suggest that fall risk screening may be important for patients undergoing TSA and RCR surgeries. The higher fall risk in the TSA group may be an important consideration as this procedure shifts toward outpatient status.