Article
Preliminary results of lunate pirocarbon prosthesis – multicentric study
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Published: | February 6, 2020 |
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Introduction: Current indications for treatment of post-traumatic or avascular necrosis of the collapsed lunate are proximal row carpectomy or proximal capitate resurfacing or TWA or wrist arthrodesis. Replacing of lunate can restore carpal height and delay major surgeries.
Aim: In this study the authors describe their experience with the use of a Pirocarbon implant for replacing of lunate in Kienbock stage IIIA-B and in post-traumatic avascular necrosis.
Methods: From September of 2016 to September of 2017 10 wrists were treated (3 III-A; 5 III-B and 2 failure of previous surgery for Kienbock desease). All cases were evaluated pre and post-operatively with MMWS, PRWHE and DASH scores with an average follow-up of 13 months (min 6 - Max 30).
Results and Conclusions: 9 of 10 reported relief from pain, small improvement in ROM and improvement strength. At the follow-up there was an average reduction of pain from 7,01 to 3,4 VAS. There was an improvement of grip and pinch force. 80% of the patients were satisfied with the results and were able to return to the precedent activities. Improvement of DASH and of PRWHE scores were detected. Radiographic controls revealed 5 cases of S-L diastasis especially in Kienbock III-B stage; no dislocation of the implant, no reduction in carpal height nor worsening of capito-lunate angle were founded.