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Arthroscopic Knotless Modified McLaughlin Procedure for Reverse Hill-Sachs Lesions.

ABSTRACT: Posterior shoulder dislocations often are associated with an impression fracture involving the anterior humeral head known as a reverse Hill-Sachs lesion. These injuries can result in significant bone defects that require surgical management to prevent them from engaging the posterior glenoid. We present a modified arthroscopic, knotless McLaughlin procedure (tenodesis of the subscapularis tendon into the bone defect) for the treatment of small-to medium-sized, engaging Hill-Sachs lesions. The knotless fashion aims to eliminate potential problems associated with knot tying, such as knot migration, knot impingement, and chondral abrasion.

SUBMITTER: Bernholt DL

PROVIDER: S-EPMC6993127 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Glenohumeral instability causing bipolar bone loss is increasingly being recognized and treated to minimize recurrence. Large Hill–Sachs and reverse Hill–Sachs lesions of the humerus must be addressed at the time of surgery to prevent recurrent dislocations and restore the native anatomic track. For patients with epilepsy, locked dislocations may create defects that must be addressed with bony procedures, including osteochondral allograft reconstruction as soft-tissue remplissage may not adequately addresses the magnitude of the bone loss. Osteochondral allografts have been successfully used to address bony defects ranging from 20% to 30% of humeral bone loss whereas shoulder arthroplasty is indicated for larger defects where the native anatomy can no longer be restored. In this Technical Note, we present a technique to address concomitant large Hill–Sachs and reverse Hill–Sachs lesions. Technique Video Video 1 The patient in this case example has a large Hill–Sachs and reverse Hill–Sachs lesion of the left humeral head. A standard deltopectoral approach is performed. The subscapularis tendon is released via a subscapularis peel directly off of its insertion on the lesser tuberosity directly medial to the long head of the biceps tendon. Adequate release of the inferior capsule is performed to be able to access the humeral head lesions with extension and maximal external rotation. The lesions on the humeral head are prepared into flat surfaces with a sagittal saw. Bone wax is used to fill each defect to recreate native anatomy. The bone wax is used as a template to harvest the same size wedge from the proximal humeral osteochondral allograft on the back table. Two allograft wedges are harvested; one for the Hill–Sachs lesion and the other for the reverse Hill–Sachs lesion. The allograft wedges are fixed into each lesion with 3.5 mm cannulated headless compression screws (Acumed Acutrak headless compression screw system; Hillsboro, OR). The subscapularis is repaired via transosseous suture repair.

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Arthroscopic Knotless Modified McLaughlin Procedure for Reverse Hill-Sachs Lesions.

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