Subscapularis lengthening in shoulder arthroplasty.

Nicholson, Gregory P; Twigg, Stacy; Blatz, Brice; Sturonas-Brown, Barbara; Wilson, Joseph · J Shoulder Elbow Surg · 2010

case_series · Level IV

Where this comes from

Abstract

To report the technique and outcome of subscapularis (SSC) lengthening in shoulder arthroplasty. When external rotation measures less than 20 degrees, a coronal subscapularis lengthening is performed. This utilizes the interval between the anterior shoulder capsule and subscapularis to titrate the correct amount of anatomic length. Average preoperative passive ER was -2 degrees. Average postoperative ER was 48 degrees. Belly press was graded as normal in 13 pts, mild in 12 pts, and poor in 2 pts. Subscapularis tendon lengthening provides a large surface area for tendon healing and allows anatomic length to be restored. Subscapularis lengthening may preserve a better length-tension relationship of the SSC muscle in shoulders with significant IR contracture undergoing shoulder arthroplasty.

Medical subject headings

Anatomy