Adductor Pollicis
- Instruct the patient to do Froment’s sign – get the patient to forcibly grasp a piece of paper between the thumb and radial side of the index proximal phalanx
- Origin:
Oblique head: bases of 2nd and 3rd metacarpals, capitate and adjacent carpal bones
Transverse head: anterior surface of body of 3rd metacarpal - Insertion: lateral side of base of proximal phalanx of thumb
- Action: adducts thumb and flexes MP joint
- Innervation: deep branch of the ulnar nerve
In a complete ulnar collateral ligament tear, the adductor pollicis can become entrapped between the remnants of the ligament
The 13 muscle groups you need to test in the hand exam:
- FPL
- FDP
- FDS
- Thenar muscles
- Interosseous
- Hypothenar muscles
- EPB and APL
- EPL
- EDC
- EIP and EDM
- ECRL and ECRB
- ECU
- Adductor Pollicis
Pingback: Hand Exam: Motor 12/13 – Extensor Carpi Ulnaris (ECU) | Sketchy Medicine
Pingback: Hand Exam: Motor 9/13 – Extensor Digitorum Communis (EDC) | Sketchy Medicine
Pingback: Hand Exam: Motor 7/13 – Extensor Pollicis Brevis (EPB) and Abductor Pollicis Longus (APL) | Sketchy Medicine
Pingback: Hand Exam: Motor 5/13 – Interosseous Muscles | Sketchy Medicine
Pingback: Hand Exam: Motor 4/13 – Thenar Muscles | Sketchy Medicine
Pingback: Hand Exam: Motor 3/13 – Flexor Digitorum Superficialis (FDS) | Sketchy Medicine
Pingback: Hand Exam: Motor 1/13 – Flexor Pollicis Longus (FPL) | Sketchy Medicine
“Thumbs up” on the nice website and your continued drawing work.
TF
I’m glad that I’ve been able to keep up some anatomy drawing even without the drawing club! I hope your drawing website is going well!