ABSTRACT
Objective To evaluate the clinical effect of talonavicular arthrodesis and the influence of adjacent joints use trephine percutaneous osteotomy in the treatment of talonavicular arthralgia.Methods From June 1999 to June 2009,24 patients were performed talonavicular arthrodesis due to a variety of painful disorder of talonavicular joint with trephine percutaneous osteotomy.There were 13 males and 11 females,with an average age of 45 years(range,37-72 years).The indications for the procedure included 15cases with posttraumatic arthritis,6 cases with rheumatoid arthritis,and 3 cases with degenerative arthritis.AOFAS system and visual analogue scale(VAS)were used to evaluate the change of function and arthralgia.Graves score system was used to evaluate the influence of adjacent joints.Results All patients were followed up 10-120 months,with the mean of 48 months.Only one case suffered skin brim necrosis of incision and got delayed healing after 3 weeks.The average AOFAS ankle-hind foot score improved from 45.2 points preoperatively to 84.5 points postoperatively.The excellent and good rate was 87.5%.VAS pain scores decreased from 8.1 to 2.4 postoperatively.Twenty-three patients were satisfied and one dissatisfied with the results.Postoperative radiology showed the union evidence in 23 patients at 6 months postoperatively(successful fusion rate of 95.8%).One joint nonunion occurred and required revision arthrodesis with iliac crest bone graft.There was an increase of Ⅰ grade in arthritic scores for 8 cases and Ⅱ grade for 1 case.Conclusion Talonavicular arthrodesis with trephine percutaneous osteotomy has the advantages of low trauma,high successful fusion rate and can acquire satisfactory clinical effect in the treatment of painful malalignment of talonavicular joints.