Arterial
What is the artery on the medial side of the forearm that makes the superficial palmar arch?
Ulnar Artery
What nerve supplies the majority of the hand?
Ulnar nerve (mainly through the deep branch)
If an individual severs the recurrent branch of the median nerve, what muscles will be impacted?
The thenar muscles!!
- Opponens pollicis
- ABductor Pollicis Brevis
- Flexor Pollicis Brevis
Lumbricals
Proximal: Tendons of flexor digitorum profundus
Distal: Extensor hoods of index, ring, middle, and little fingers
Flexor pollicis brevis
Flexes thumb @ MP joint
What artery goes through the anatomical snuffbox?
Radial Artery
What nerve passes through guyons canal?
ulnar nerve
Patient presents with paresthesia of the lateral 3 1/2 fingers in the distal portion of the palm. What would this injury be called?
Opponens Pollicis
Trapezium --> Palmar surface of metacarpal 1
Opponens pollicis
Medially rotates thumb
What supplies the dorsal interosseous of the hand?
dorsal and palmar metacarpal arteries
Adductor Pollicis
Deep branch of ulnar nerve
Patient came into the ER after wrist slashing. The lateral aspect of the patient's hand would present with what findings?
Full median sensation loss - the superficial palmar branch will now be cut additionally.
Opponens digiti minimi
Pisiform --> proximal phalanx of pinky
Palmar Interossei
ADDuction (PADs!!) --> Palmar interossei
The common palmar digital arteries give rise to?
Proper palmer digital arteries
Name the branches that the median nerve turns into in the hand for motor innervation?
1. Digital branches (lumbricals 1/2)
2. Recurrent Branch (Thenar)
Patient presents with positive frontmen sign and wasting of the 1st interwebbing space. What nerve would be injured in this scenario?
Ulnar Nerve
Palmar interossei / How many are there?
Medial aspect of metacarpal 2 & Lateral aspect of metacarpal 4/5 --> Extensor hood of fingers
There are 3!
Lumbricals
Flexes --> MP
Extends ---> IP
What artery goes to the ventral aspect of the thumb?
Palmar digital artery of thumb
Palmaris Brevis
Superficial branch of ulnar nerve
Patient presents with a failure of the Allen test on the medial aspect of the hand, what has been occluded?
Collateral arteries from the Ulnar artery!
Palmaris Brevis attachments? (medial & lateral)
Lateral: Palmar aponeurosis and flexor retinaculum
Medial: Dermis of skin on the medial margin of the hand
Palmaris Brevis
Increases grip