Objective     To explore the treatment efficiency of wrist arthroscopy combined with ulnar shortening osteotomy for the ulnar impaction syndrome.      Methods       From May 2009 to May 2013

13 cases of ulnar impaction syndrome were treated by wrist arthroscopic surgery combined with ulnar shortening osteotomy. Among these patients

9 were men and 4 were women

aged from 22 to 63 years old (average of 46.2 years old). Xray

visual analogue scale/score and Cooney wrist function score were adopted to assess the preoperative and postoperative wrist function and evaluate the clinical effect.       Results        All patients achieved bone healing of ulnar osteotomy

without infection or nonunion. The ulnar variance measured by Xray was 3.1±1.5 mm before operation

and -0.3±0.6 mm after operation. The pain of all patients was alleviated at different levels

with the preoperative visual analogue scale(VAS) score of 7.6±1.2 to postoperative score of 3.1±1.6. The pain of 3 patients got complete remission

7 got obvious relief

and the rest 3 obtained less obvious relief. The preoperative Cooney wrist function score was 61.2±16.3

which increased to 86.5±9.8 after operation. According to their outcomes

13 patients were divided into 4 grades

including 3 in top grade

7 in good grade

3 in general grade and no one in bad grade. All data were analyzed with SPSS 13.0

and the preoperative and postoperative scores had significant differences (P0.05).        Conclusion      Wrist arthroscopy operation combined with ulnar shortening osteotomy is the first option to treat ulnar impaction syndrome

and this method can overcome the shortcomings of single operation and  keep the advantages of less trauma

fine efficacy and short recovery period.