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  • Title: Partial Capitate with/without Hamate Osteotomy in the Treatment of Kienböck's Disease: Influence of the Stage of the Disease on the Midterm Outcome.
    Author: Atiyya AN, Nabil A, El Lattif AIA, El Saied MN, Soliman RA.
    Journal: J Wrist Surg; 2020 Jun; 9(3):249-255. PubMed ID: 32509432.
    Abstract:
    Objective  Moritomo et al introduced partial capitate osteotomy as a treatment modality for early stages of Kienböck's disease. This technique maintains articular contact between the capitate and the scaphoid. We added hamate-shortening osteotomy in addition to partial capitate shortening in cases of lunate type II. The purpose of this study was to evaluate intermediate-term results of partial capitate shortening, investigate the influence of the stage of the disease on the outcome, and assess the clinical and radiological outcomes of adding hamate osteotomy in cases of type II lunate. Patients and Methods  A total of 17 consecutive patients (3 women, 14 men) with early stages of Kienböck's disease were prospectively reviewed using the aforementioned technique. Eight patients were in stage II and nine patients were in stage IIIA according to the Lichtman classification system. Clinical outcome measures included pain visual analog score, grip strength and range of motion as a percentage of the unaffected side, and assessment using the Patient-Rated Hand and Wrist Evaluation (PRHWE) and the modified Wrightington Hospital Wrist Score (MWHWS). Radiological outcome measures included healing of the osteotomy site, Stahl index, radioscaphoid angle, and progression of the disease. Results  Follow-up period averaged 72 months. All cases of isolated capitate osteotomy and combined capitate and hamate osteotomies united fully. Clinical results revealed significant improvement in pain, grip strength and extension, and PRHWE and MWHWS values. Wrist flexion did not change postoperatively. Patients with stage II showed better overall results and significant MWHWS improvement. Conclusion  At the intermediate term, partial capitate with/without hamate shortening is an effective modality for the treatment of patients with early stage Kienböck's disease. Stage II patients showed better results than stage IIIA patients in terms of pain, flexion, grip, PRHWE, and MWHWS. Adding hamate osteotomy may improve the functional results for type II lunate; however, a larger sample is needed to elicit statistical significance. Level of Evidence  This is a Level IV, therapeutic study.
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