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First Aid
MSK
| Question | Answer |
|---|---|
| Rotator cuff muscles: which are they and what do they do? | "SITS" Supraspinatus- helps deltoid abduct arm Infraspinatus- laterally rotates arm Teres minor- adducts and laterally rotates arm Subscapularis- medially rotates and adducts arm |
| Thoracic outlet syndrome (Klumpke's palsy) Compression of the subclavian artery and inferior trunk of brachial plexus (C8,T1) | 1.Atrophy thenar & hypothenar 2.Atrophy of interosseous muscles 3.Sensory deficits on medial side of forearm & hand 4.Disappearance of radial pulse when moving head to the opposite side. |
| Radial nerve | "Radial nerve innervates the BEST" 1. Brachioradialis (flexes foerarm at elbow) 2. Extensors of the wrist and fingers 3. Supinator 4. Triceps (extension of forearm at elbow) |