• The splithook prosthesis, usually applied after a hand has been amputated, is also useful in many cases in which the hand is paralyzed. Out of a group of 77 patients with tetraplegia resulting from lesions in the cervical segments of the spinal cord, 25 were selected for study during a trial period of wearing the splithook prosthesis.
The largest group of patients who benefited by this device were those with complete lesions at C-5 and C-6. In them the residual function in the shoulder girdle sufficed to operate the cable harness to replace the lateral prehension movement that normally exists between the thumb and index finger; they also had enough elbow flexion to lift objects grasped with the splithook. Only one of the 25 patients rejected this aid. Of the four models tried, each had its advantages under special conditions.
Nyquist RH. EXOSKELETAL SPLITHOOK PROSTHESES FOR PATIENTS WITH TRAUMATIC TETRAPLEGIAPRELIMINARY EXPERIENCE WITH THEIR USE FOR UPPER EXTREMITIES. JAMA. 1956;160(9):761–763. doi:10.1001/jama.1956.02960440033009
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