Case-control study comparing 5 radiographic scapular morphology parameters — acromion index, lateral acromion angle, critical shoulder angle, Bigliani type, and acromial slope — in 51 patients with degenerative full-thickness rotator cuff tears versus 51 age- and sex-matched controls with intact cuffs, to determine which parameters best predict tear presence.
On any AP shoulder radiograph, measure the critical shoulder angle: an angle ≥35° carries an OR of 10.8 for degenerative rotator cuff tear and should raise your suspicion and lower your threshold for advanced imaging — a quantitative 30-second measurement that outperforms the Bigliani classification you've been taught to eyeball.
Case-control study comparing 5 radiographic scapular morphology parameters — acromion index, lateral acromion angle, critical shoulder angle, Bigliani type, and acromial slope — in 51 patients with degenerative full-thickness rotator cuff tears versus 51 age- and sex-matched controls with intact cuffs, to determine which parameters best predict tear presence.
On any AP shoulder radiograph, measure the critical shoulder angle: an angle ≥35° carries an OR of 10.8 for degenerative rotator cuff tear and should raise your suspicion and lower your threshold for advanced imaging — a quantitative 30-second measurement that outperforms the Bigliani classification you've been taught to eyeball.