Roentgenological follow-up studies of silicone joint surface replacement in hand surgery as exemplified by scaphoid total and partial prosthesis
Wilhelm, K.
Handchirurgie Mikrochirurgie Plastische Chirurgie Organ der Deutschsprachigen Arbeitsgemeinschaft für Handchirurgie Organ der Deutschsprachigen Arbeitsgemeinschaft für Mikrochirurgie der Peripheren Nerven und Gefasse Organ der V. 22(4): 177-182
1990
ISSN/ISBN: 0722-1819 PMID: 2391036 Document Number: 364568
Frequently, the clinical evaluation of a silicon prosthesis does not correspond to radiologic findings. Therefore, an extensive examination of 52 patients (total 85 patients) following a partial or total prosthetic replacement of the scaphoid or any other carpal bone, was performed. To obtain comparable information as to mobility, 12 wrists of "normal" persons and 17 wrists of volleyball players were exactly measured. Interestingly, in flexion the volleyball players demonstrated a considerably larger range of motion than the normal group. These findings applied for the total as well as for the partial prostheses. It could be shown that total scaphoid prosthesis lead to the best mobility. Subjectively however, these excellent results are surpassed by the proximal partial prosthesis. The most unfavorable results were found in distal prostheses of the scaphoid fixed within the proximal scaphoid alone. The best results are obtained by the distally and proximally fixed distal prosthesis of the scaphoid. Altogether, the results are encouraging. They indicate that radiological findings do not correlate to clinical findings. The reasons for this are presented in detail.