Hand Surface Anatomy

Thenar and hypothenar are two terms that describe the fleshy mass of skin fat and muscle on the thumb side radial and the small finger side ulnar of the hand. This complex structure connects the entire hand to the radius and ulna facilitates the passage of tendons together with the above mentioned neurovascular structures from the forearm to the hand and permits us to exploit all its movements.

Hand And Wrist Injuries Part I Nonemergent Evaluation

The tendons of the flexor carpi radialis and the palmaris longus are palpable.

Hand surface anatomy. Perform tinels test by tapping on tunnel and assessing for parathesias in the ulnar nerve distribution. The eight short carpal bones of the wrist are organized into a proximal row scaphoid lunate triquetral and pisiform which articulates with the bones of the forearm and a distal row trapezium trapezoid capitate and hamate which articulates with the bases of the five metacarpal bones of the hand. Naming the digits thumb index 5.

The length of the middle finger from the metacarpophalangeal joint to its extremity is equal to the distance from the metacarpophalangeal joint to the radiocarpal joint. Those are flexion extension abduction and adduction of the hand. Naming the digits thumb 4.

Clenching the fist may make them more prominent. Here is a video version where you can see me point out the anatomy of the hand surface. Here are some landmarks of the wrist and hand surface anatomy.

Surface anatomy of the hand and wrist. Theyre probably visible on the anterior portion of the forearm and wrist. Section 2 surface pertinent anatomy 2.

Hand surface anatomy 1. Surface anatomy of the hand the hand is twice as long as it is broad. The skeleton of the human hand consists of 27 bones.

When studying the surface anatomy of the hand the visible and easily palpable bony landmarks the palmar skin creases and the topographical reference lines like kaplans cardinal line are important guides to localizing the deeper structures of the hands anatomy. The anatomy of the hand is incomplete without understanding the wrist. Naming the digits the birmingham hand centre assessment and early management of the injured hand university hospitals birmingham nhs foundation trust 3.

The pisiform bone is palpated just below the hypothenar eminence. Assess sensation of ulnar nerve distribution in the hand by lightly touching the volar surface of the ulnar half of the ring finger and the small finger.

Upper Limb Surface Anatomy Diagram Quizlet