RC Tear Flashcards
1
Q
Structures involved
A
Supraspinatus - most common.
Other SITS muscles (Teres min, infra, subscap).
Biceps long head.
2
Q
Superior affects what structure
A
supraspinatus
3
Q
Supero-posterior affects what structure
A
supra & infraspinatus
4
Q
Supero-anterior affects what structure
A
supra
rotator interval
subscap
BLH
5
Q
Causes
A
Acute trauma
Overuse
Chronic degenerative changes
6
Q
Risk Factors
A
Age >40 Post-menopause More likely on dominant side Smoking Posture Fam hx Repetitive lifting or OH activities Trauma: fall on shoulder or dislocation (more common in younger).
7
Q
Fatty infiltrates
A
atrophy, fibrosis, and fat accumulation around muscle.
More common in elderly.
Moderate infiltrates 3yr after tear.
Severe infiltrates 5yr after tear.
ideally want surgical tx before moderate infiltrates occur.
8
Q
Comorbidities
A
may delay bone-tdn healing process. Diabetes Hypercholesterolemia Smoking NSAID use
