Identifying and repairing subscapularis tears can be challenging for the arthroscopic surgeon and is commonly related to the difficulty in accurately recognizing the distorted anatomy that may be encountered. Defining and differentiating this anterior glenohumeral joint anatomy are often made even more challenging in clinical situations in which large, retracted subscapularis and anterosuperior tears are present. Identifying the “comma tissue” during the initial arthroscopic assessment is very helpful because it provides an important anatomic landmark that not only serves to orient the surgeon but also facilitates reduction and repair of these tears. Identification of the comma tissue is sometimes a critical surgical step in subscapularis repair, and we provide tips and techniques that can aid the surgeon in reliably and reproducibly recognizing and incorporating the comma tissue.
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