Accuracy of magnetic resonance imaging in predicting the intraoperative tear characteristics of pectoralis major XXXX .

@entity79 @entity135 @entity397 @entity2996
BACKGROUND: @entity2996 ( @entity2996 ) is the preferred study of choice for pectoralis major @entity397 . Because this is a rare injury, no large case series have evaluated the efficacy of @entity2996 for diagnosing and characterizing pectoralis major @entity397 . We hypothesized that @entity2996 would be accurate for diagnosis of the location and grade of pectoralis major tears. METHODS: The study included 36 operative cases of pectoralis major @entity397 with detailed descriptions of tear location and grade and satisfactory preoperative MRIs. Two musculoskeletal fellowship-trained radiologists interpreted the MRIs, which were then compared with the operative findings for location: @entity79 or myotendinous junction, and tear grade (G): G2 (incomplete high grade partial tear) or G3 (complete tear). The sensitivity, specificity, positive predictive value, and negative predictive value were calculated. RESULTS: The @entity2996 sensitivity was 1.00 for diagnosing complete G3 tears at the sternal head and clavicular head in acute @entity397 . The sensitivity of @entity2996 for diagnosing @entity79 at the sternal and clavicular heads was 0.93 and 0.90, respectively. The sensitivity of @entity2996 in diagnosing myotendinous and G2 tears diminishes, but specificity and negative predictive value remain high for sternal and clavicular @entity135 . CONCLUSIONS: Our data support the use of @entity2996 in diagnosing the tear grade and location of pectoralis major @entity397 , particularly for acute, tendon-bone, and G3 tears. The diagnostic accuracy of @entity2996 decreases when chronic tears are evaluated. @entity2996 remains a useful adjunct in diagnosing and guiding treatment of pectoralis major @entity397 .
