儿童髌骨套状骨折的X线特点

Radiologic features of the patella sleeve fractures in children

目的 探讨儿童髌骨套状骨折的X线表现特点.方法 对11例儿童髌骨套状骨折的X线表现和临床资料进行回顾性分析,评价髌骨套状骨折的X线特征.结果 11例儿童髌骨套状骨折中,X线平片表现为关节肿胀11例、髌骨移位9例、髌股关节间隙增宽5例、髌骨上下极边缘毛糙或游离小斑状、蛋壳状骨片11例.1例儿童髌骨下极套状骨折初诊X线平片未显示骨折片,15 d后复诊时蛋壳样的撕脱骨折片可清晰显示.结论 儿童髌骨套状骨折X线表现具有特征性.

Objective To evaluate the X-ray features of the patella sleeve fractures in children.Methods The X-ray findings of sleeve fractures were analyzed retrospectively in 11 children to assess the radiologic features.Results The main X-ray findings in children （ 11 cases ） included displacement of patellas （ 9 cases ）,widened joint spaces （ 5 cases）,separation of the patella fragment （ 11 cases ） and swelling of the knee（ 11 cases）.One boy with sleeve fracture of the inferior pole of the patella was missed because the shell-like avulsion fracture can not be detected till 15 days later.Conclusion The patella sleeve fractures in children are uncommon.The radiologic features of the sleeve fractures need be well acquainted by clinicians to facilitate early diagnosis.