Proximal row carpectomy and replacement of the proximal pole of the capitate by means of a pyrocarbon cap (RCPI) in advanced carpal collapse]

Purpose: The results of 5 patients suffering from advanced carpal collapse after proximal row carpectomy and replacement of the proximal pole of the capitate by means of a pyrocarbon cap are presented. Patients and Method: 5 patients with an average age of 40.2 years (23-66 years) suffering from advanced carpal collapse were treated by means of proximal row carpectomy and replacement of the proximal pole of the capitate between January 2005 and August 2008. Clinical and radiological follow-ups within an average post-operative period of 54.4 months (25-68 months) were conducted. For the assessment of the outcome the DASH score and the traditional Krimmer score were used. Results: At the follow-up all patients were fully recovered and could expose the wrist to higher exertions. Radiologically the implants in 3 of 5 patients were found to be tight and at the original post-operative location in comparison with the post-operative X-rays. In 2 of 5 patients a mild seam of loosening was detected around the implant. In the traditional Krimmer score the patients reached 81 points (75-85 points) and in the DASH score 8 points (2.5-23.33 points). Conclusion: The described results of the present procedure define it as an alternative in treating patients suffering from advanced carpal collapse as far as evidence from this small collective can be considered. The small seam of loosening around implants in 2 of 5 patients suggests that we may expect further loosening of implants in the long run. Larger patient collectives are necessary to confirm these provisional results.