Evan S Lederman1, Stephen Flores2, Christopher Stevens3, Damien Richardson4, Pamela Lund5. 1. Orthopedic Clinic Association, Phoenix, Arizona, U.S.A.; Department of Orthopedic Surgery, University of Arizona College of Medicine-Phoenix, Phoenix, Arizona, U.S.A.. Electronic address: elederman@tocamd.com. 2. Covenant Medical Center, Lubbock, Texas, U.S.A. 3. Tucson Orthopedic Institute, Tucson, Arizona, U.S.A. 4. Department of Orthopedic Surgery, University of Arizona College of Medicine-Phoenix, Phoenix, Arizona, U.S.A. 5. SimonMed Imaging, Phoenix, Arizona, U.S.A.
Abstract
PURPOSE: Evaluation and description of a pathognomonic lesion identified on magnetic resonance imaging (MRI) of a chondrolabral injury of the glenohumeral joint. METHODS: Patients were prospectively identified at the time of MRI by a characteristic teardrop appearance of a pedicled displaced chondrolabral flap in the axillary recess on coronal imaging and retrospectively reviewed. RESULTS: In a sample of 36 patients, there were 30 males (83%), and the average age was 27 years (14-75 years). Twenty-four (67%) were noted to have sustained an instability episode or had findings of instability on physical examination; 19 patients (53%) were playing a sport at the time of injury. The characteristic teardrop lesion measured 3.36 mm (1-9 mm) in the coronal plane, 6.98 mm (2-20 mm) sagittal and 11.78 mm (1-25 mm) longitudinal. The lesion was located in the anterior inferior quadrant of the glenoid. CONCLUSIONS: The glenoid labral articular teardrop (GLAT) lesion represents a pathognomonic lesion in the spectrum of chondral labral injury, indicating articular cartilage damage to the glenoid. LEVEL OF EVIDENCE: Level IV, therapeutic case series.
PURPOSE: Evaluation and description of a pathognomonic lesion identified on magnetic resonance imaging (MRI) of a chondrolabral injury of the glenohumeral joint. METHODS:Patients were prospectively identified at the time of MRI by a characteristic teardrop appearance of a pedicled displaced chondrolabral flap in the axillary recess on coronal imaging and retrospectively reviewed. RESULTS: In a sample of 36 patients, there were 30 males (83%), and the average age was 27 years (14-75 years). Twenty-four (67%) were noted to have sustained an instability episode or had findings of instability on physical examination; 19 patients (53%) were playing a sport at the time of injury. The characteristic teardrop lesion measured 3.36 mm (1-9 mm) in the coronal plane, 6.98 mm (2-20 mm) sagittal and 11.78 mm (1-25 mm) longitudinal. The lesion was located in the anterior inferior quadrant of the glenoid. CONCLUSIONS: The glenoid labral articular teardrop (GLAT) lesion represents a pathognomonic lesion in the spectrum of chondral labral injury, indicating articular cartilage damage to the glenoid. LEVEL OF EVIDENCE: Level IV, therapeutic case series.
Authors: Jens Wermers; Benedikt Schliemann; Michael J Raschke; Felix Dyrna; Lukas F Heilmann; Philipp A Michel; J Christoph Katthagen Journal: Arthrosc Sports Med Rehabil Date: 2021-09-15