The proper names of the 5 digits beginning radially are thumb, index finger, long or middle finger, ring finger, and little finger. Thenar Muscles table This is a preview of subscription content, log in to check access. Physiopedia articles are best used to find the original sources of information see the references list at the bottom of the article. The ulnar nerve is distributed to the muscles responsible for the finer movements of the fingers; hence injuries to it cause severe disabilities. A very readable classic. Given the variety of splinting options available, therapists critically analyze which splint to provide forearm based or hand based and which thumb joints to immobilize.
The MP joint is in abduction and flexion. The common mechanism for an isolated volar plate injury is hyperextension during an axial load. The maximum contact area was 76 mm 2 on the radiocentral part with the thumb in palmar abduction. The patient actively extends the IP joint. Add in all kinds of fancy motor planning and you have playing a musical instrument. When immobilization is necessary, the hand should be placed in the "safe position" in order to limit the development of restrictions of joint motion.
Carpometacarpal joint - Wikipedia
Muscles and tendons of the dorsum of the left hand. From radial to ulnar, the proximal row consists of the scaphoid, lunate, triquetrum, and pisiform bones. The opponens is deep to the others and is not well named in that the fifth finger cannot be opposed. With two secondary joints, the wrist and thumb MP, more stability is provided to the CMC joint while allowing motion in all planes with extremes of motion restricted Fig. The nail bed has a germinal matrix, sterile matrix, and hyponychium.
The distal radioulnar joint allows pronation and supination of the hand as the radius rotates around the ulna. Anterior sternoclavicular Posterior sternoclavicular Interclavicular Costoclavicular. The function of the finger CMC joints and their segments overall is to contribute to the palmar arch system together with the thumb. The second purpose is to validate the accuracy of the approach. Anatomy and pathology of the aging joint. All carpal bones participate in wrist function except for the pisiform, which is a sesamoid bone through which the flexor carpi ulnaris tendon passes.