Subscapularis Tear: Likelihood Ratios

Introduction: Part of the rotator cuff.

The likelihood ratios of findings for Subscapularis Tear are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %.	Post-Test Probability (Predictive Value): %.	Switch to display mode.
Note that calculating probabilities from more than one** finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)

Good Positive and Negative Likelihood Ratios
Finding	Result	+LR	-LR
[ + ] Internal Rotation Weakness	+ 0 -	24.3	0
only one study Study: Joint Bone Spine. 2008 Dec 5. PMID: 19059801
[ + ] Lift Off Test	+ 0 -	7.5	0.4
The patient is examined in standing and is asked to place their hand behind their back with the dorsum of the hand resting in the region of the mid- lumbar spine. The dorsum of the hand is raised off the back by maintaining or increasing internal rotation of the humerus and extension at the shoulder. Study: Joint Bone Spine. 2008 Dec 5. PMID: 19059801