Single shot interscalene regional anesthesia provides noninferior analgesia and decreased complications compared with an indwelling catheter for arthroscopic and reconstructive shoulder surgery.

Background: There is an abundance of literature comparing the efficacy, safety, and complication rates of regional anesthesia in shoulder surgery. The purpose of this study was to compare analgesia efficacy, and complication rates between single shot and continuous catheters in patients undergoing arthroscopic or reconstructive shoulder surgery in a large cohort.

Methods: Consecutive patients (n = 1888) who underwent shoulder arthroplasty or arthroscopic shoulder surgery and had regional anesthesia were included.

Lower Extremity Biomechanics Predicts Major League Baseball Player Performance.

Background: Although lower extremity biomechanics has been correlated with traditional metrics among baseball players, its association with advanced statistical metrics has not been evaluated.

Purpose: To establish normative biomechanical parameters during the countermovement jump (CMJ) among Major League Baseball (MLB) players and evaluate the relationship between CMJ-developed algorithms and advanced statistical metrics.

Study Design: Cohort study; Level of evidence, 3.

Athletes diagnosed with anterior and posterior shoulder instability display different chief complaints and disability.

Background: Anterior shoulder instability is a common complaint of young athletes. Posterior instability in this population is less well understood, and the standard of care has not been defined. The purpose of the study is to compare index frequency, treatment choice, and athlete disability following an incident of anterior or posterior shoulder instability in high school and collegiate athletes.