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抄録:症例1は14歳,女子.1996年に左橈骨遠位端骨折を受傷し保存療法を受けた.1998年から左手関節痛が出現し増強したため,1999年7月当科を受診した.外傷性橈骨遠位骨端線早期閉鎖と診断し,2000年3月に橈骨仮骨延長術(12mm)を行った.術後2年の現在,X線写真上で手関節の適合性は良好であり手関節痛は消失している.症例2は16歳,男性.1994年に左橈骨遠位端骨折を受傷し保存療法を受けた.1997年から左手関節痛と前腕変形を認めたため,1999年4月当科を受診した.外傷性橈骨遠位骨端線早期閉鎖と診断し,2000年7月に橈骨仮骨延長術(15mm)を行った.術後1年6カ月の現在,X線写真上で手関節の適合性は良好であり手関節痛は消失している.今回,仮骨延長術にて橈尺骨長差が矯正され,しかも遠位橈尺関節の適合性が得られた.小児外傷例における橈骨骨端線早期閉鎖に対する仮骨延長術は有効である.
We describe two patients who underwent callus distraction (callotasis) of the radius to correct a forearm length discrepancy that resulted from a traumatic epiphyseal injury. One was a 14-year-old girl who sustained a radial epiphyseal injury 4 years before, and the other was a 16-year-old boy who sustained a similar injury 6 years before. Both patients complained of wrist pain and limited wrist motion due to shortening of the radius and incongruity of the distal radio-ulnar joint. Callotasis was undertaken to lengthen the radius by 12 mm in the first case and by 15 mm in the second case. After adequate lengthening, the patients' wrist pain disappeared completely and the range of motion was markedly improved with good congruity of the distal radio-ulnar joint. Both patients were satisfied with the outcome. In conclusion, callotasis of the radius is useful procedure for treating discrepancy of the forearm due to traumatic epiphyseal injury.
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