Long-term Outcomes of Ulnar Shortening Osteotomy for Idiopathic Ulnar Impaction Syndrome: At Least 5-Years Follow-up

다국어 초록 (Multilingual Abstract)

Background: There have been few outcomes studies with follow-up after performing ulnar shortening osteotomy for ulnar impactionsyndrome. We investigated the long-term clinical and radiological outcomes of ulnar shortening osteotomy for the treatmentof idiopathic ulnar impaction syndrome.
Methods: We retrospectively reviewed 36 patients who had undergone ulnar shortening osteotomy for idiopathic ulnar impactionsyndrome for a mean follow-up of 79.1 months (range, 62 to 132 months). The modifi ed Gartland and Werley scores were measuredpre- and postoperatively. The radiographic parameters for the assessment of the distal radioulnar joint (DRUJ) as well as therelationship between these radiographic parameters and the clinical and radiological outcomes were determined.
Results: The average modifi ed Gartland and Werley wrist score improved from 65.5 ± 8.1 preoperatively to 93.4 ± 5.8 at the lastfollow-up visit. The average preoperative ulnar variance of 4.7 ± 2.0 mm was reduced to an average of −0.6 ± 1.4 mm postoperatively.
Osteoarthritic changes of the DRUJ were fi rst seen at 34.8 ± 11.1 months follow-up in 6 of 36 wrists (16.7%). Those whohad osteoarthritic changes in the DRUJ had signifi cantly wider preoperative ulnar variance, a longer distal radioulnar distance anda greater length of ulnar shortening, but the wrist scores of the patients who had osteoarthritic changes in the DRUJ were comparableto those who did not have osteoarthritic changes in the DRUJ.
Conclusions: The clinical outcomes are satisfactory for even more than 5 years after ulnar shortening osteotomy for treating idiopathiculnar impaction syndrome despite the osteoarthritic changes of the DRUJ. The patients who need a larger degree of ulnarshortening may develop DRUJ arthritis.

참고문헌 (Reference)

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