PURPOSE: To determine the effect of coracoacromial ligament (CAL) resection and subacromial decompression (SAD)/acromioplasty on humeral head translation under anterosuperior and superior loading in a cadaveric model with an intact rotator cuff. METHODS: Six cadaveric shoulders were tested in the intact state, following CAL resection and following SAD. RESULTS: Excision of the CAL led to a significant increase in anterosuperior humeral translation of 2.1 mm (17%). SAD led to a significant increase in superior humeral translation of 2.5 mm (28%). CONCLUSIONS: The results of this cadaveric study showed that resection of the CAL led to a 2.1-mm increase in anterosuperior translation and that SAD led to a 2.5-mm increase in superior translation. CLINICAL RELEVANCE: CAL resection and SAD are common surgical procedures, which may lead to increases in anterosuperior and superior glenohumeral instability.
PURPOSE: To determine the effect of coracoacromial ligament (CAL) resection and subacromial decompression (SAD)/acromioplasty on humeral head translation under anterosuperior and superior loading in a cadaveric model with an intact rotator cuff. METHODS: Six cadaveric shoulders were tested in the intact state, following CAL resection and following SAD. RESULTS: Excision of the CAL led to a significant increase in anterosuperior humeral translation of 2.1 mm (17%). SAD led to a significant increase in superior humeral translation of 2.5 mm (28%). CONCLUSIONS: The results of this cadaveric study showed that resection of the CAL led to a 2.1-mm increase in anterosuperior translation and that SAD led to a 2.5-mm increase in superior translation. CLINICAL RELEVANCE: CAL resection and SAD are common surgical procedures, which may lead to increases in anterosuperior and superior glenohumeral instability.
Authors: Matthijs Jacxsens; Shireen Y Elhabian; Sarah E Brady; Peter N Chalmers; Robert Z Tashjian; Heath B Henninger Journal: J Shoulder Elbow Surg Date: 2019-03-28 Impact factor: 3.019
Authors: Filippo Familiari; Alan Gonzalez-Zapata; Bruno Iannò; Olimpio Galasso; Giorgio Gasparini; Edward G McFarland Journal: J Orthop Traumatol Date: 2015-05-24