Postoperative infraspinatus contractility is associated with acromiohumeral distance after arthroscopic rotator cuff repair.

ABSTRACT:

Objective

To investigate whether infraspinatus muscle contractility improves following arthroscopic rotator cuff repair (ARCR) and its impact on postoperative acromiohumeral distance (AHD).

Methods

In this prospective case series, 61 shoulders with posterosuperior rotator cuff tears involving at least a full-thickness supraspinatus tear, with or without extension into the infraspinatus tendon (mean age: 66.4 ± 7.7 years; 31 men, 30 women) were followed for 1 year after ARCR. Shoulders with subscapularis tears or re-tears were excluded. Muscle contractility was measured using real-time tissue elastography (activity value = elasticity difference between rest and contraction), while AHD was assessed radiographically at 0° and 60° abduction.

Results

The infraspinatus acti

SUBMITTER: Oishi R 

PROVIDER: S-EPMC12920292 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature