Proximal row carpectomy for Lichtman stage III Kienböck's disease.

Abstract

The purpose of this study was to investigate the objective and subjective outcomes of proximal row carpectomy (PRC) for stage III Kienböck's disease and determine if the physician's objective measurements correlate with the patients' subjective outcomes. Twenty-four patients who underwent PRC for stage III Kienböck's disease with a follow-up period of more than 18 months were enrolled in the study. Clinical evaluation included preoperative and postoperative Quick Disabilities of the Arm, Shoulder and Hand (Q-DASH) questionnaire, postoperative Mayo wrist score, postoperative total joint range of motion (ROM), as well as grip and pinch strength measurements of the operated and normal side. Radiographic criteria such as carpal height ratio, subchondral cyst, and osteophyte formation were assessed during the follow-up period. Mean follow-up period was 41.7 months (range: 18-106 months). No wrists underwent total arthrodesis. Reflex sympathetic dystrophy was observed in 2 patients (8.3%). Postoperative ROM measurements, power grip, and pinch strength values significantly decreased in both stages (IIIA and IIIB) on the operated side compared to the normal side. In contrast, Q-DASH scores significantly increased in both stages compared to preoperative values. Average Mayo wrist score was 67.3 (range: 10-90). PRC is a well-tolerated procedure for stage III Kienböck's disease with certain complications. While subjective values improved significantly, there was no correlation between this improvement in subjective values and objective measurements. PRC was not able to restore motion postoperatively to that of the normal side, even though this feature did not affect postoperative subjective patient satisfaction.