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Purpose: The purpose of this study was to evaluate the short-term results of pyrocarbon lunate implants (PLI) (Ascension Orthopaedics, Austin, Texas). Methods: Patients with advanced Kienböck’s disease who received PLI were prospectively followed for one year. The implant outcomes were assessed by preand postoperative questionnaires and physical examination. Results: six patients (six implants) with Kienböck’s disease grade IV were included in this study. All implants remained in situ at one-year follow-up. Pain was satisfactorily reduced in five patients. Grip strength improved slightly in three patients and worsened in two. The DASH scores improved in four patients with mean 26 points. Five patients returned to their previous jobs and the two patients whom did sport could resume it. Three patients had to be mobilized under general anaesthesia because of a severely stiffened wrist. Conclusions: The short-term results of the PLI are suboptimal, probably largely due to severe stiffening of the wrist. Nonetheless, long-term results are necessary to adequately assess the longevity and functionality of this implant and to assess which postoperative treatment would provide the optimal clinical result. Type of study/level of evidence: Therapeutic, level IV.

The Short-Term Results of Pyrocarbon Lunate Implants in Patients with Advanced Kienböck’s Disease