ばね指に対するベタメタゾン懸濁液腱鞘内注射の臨床成績

Betamethasone Suspension Injection for Trigger Digits

　ベタメタゾン懸濁液腱鞘内注射のばね指への臨床成績を61例65指につき調査し，治療効果と副作用をトリアムシノロンアセトニドの内外の報告と比較検討した．2回までの注射により平均観察期間25.9日の注射後最初の評価で89.2％に，同じく13.8カ月の経過観察で52.6％にそれぞれ有効であった．全症例で明らかな副作用は認めなかった．本邦ではトリアムシノロンアセトニドを用いたばね指腱鞘内注射の報告が大部分を占めるが，ベタメタゾン懸濁液腱鞘内注射もばね指治療に有用で，より安全な治療法である可能性がある．

　Purpose：To assess the clinical results of betamethasone acetate and sodium betamethasone phosphate suspension (betamethasone suspension) injections of the flexor tendon sheath to manage idiopathic trigger digits in comparison with the results of triamcinolone acetonide described in the literature.　Materials and methods：Sixty-five trigger digits in 61 consecutive patients treated with one to three injection(s) of betamethasone suspension were assessed clinically an average of 25.9 days after the injection (first evaluation) and 13.8 months after the final injection (follow-up).　Result：The results of the first evaluation showed that triggering and/or pain had resolved after injection of 58 of the 65 fingers (89%).　The resolution has continued in 30 of 57 fingers (52%) with no recurrence during follow-up period.　Eleven fingers (17%) were treated surgically because the injection was ineffective or because of recurrence after the injection.　There were no clear complications in this series.　Conclusion：Betamethasone suspension injections may be as effective as triamcinolone acetonide injections as a means of treating trigger digits, and betamethasone suspension injections may be safer than triamcinolone acetonide injections.