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肱骨小头骨软骨炎

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A lateral elbow joint-surface problem in young throwers and gymnasts — how it is found, when it heals with rest, and when surgery is needed.

一名年轻的棒球投手因肘部外侧疼痛而紧握该部位。
肱骨小头骨软骨炎影响年轻投掷运动员和体操运动员的外侧肘部,这是由于关节表面反复受压所致。 Kieran Hirpara 4.0

本页面由机器翻译,尚未经临床医生审核。英文版本为权威版本。

您的感受

这通常表现为肘部外侧的钝痛或酸痛,往往难以准确定位。症状在活动时会加重,尤其是投掷、体操或任何使手臂负荷的动作,休息后可缓解。许多年轻运动员会发现他们无法再完全伸直肘部;这种最后几度伸直度的丧失很常见,且往往在疼痛成为真正问题之前就已出现。

如果关节表面的一块碎片开始松动,肘部可能会出现卡住、弹响或交锁,并在活动后肿胀。真正的交锁发作(肘部卡住并暂时无法活动)通常意味着一小块软骨和骨碎片脱落并游离于关节内。该病症最常影响从事投掷运动(如棒球、板球)或体操的青少年,因为这些活动中肘部外侧会受到反复的冲击。

实际发生了什么

肘关节的外侧半部分是一个称为肱骨小头的圆形骨性突起,表面覆盖着光滑的软骨。随着肘关节在生长过程中反复承受重度负荷,软骨下方的一小块骨组织可能会失去血液供应并开始软化。这就是骨软骨炎,或称剥脱性骨软骨炎(OCD)。覆盖其上的软骨可能保持完整并愈合,或者该骨块可能开裂、隆起,并最终分离形成游离体

请注意不要将其与一种较轻的、可自愈的儿童疾病——潘纳病(Panner's disease)混淆。潘纳病通常影响年龄较小的儿童(通常10岁以下),通过休息即可自行缓解,且不会留下永久性损伤。真正的剥脱性骨软骨炎发生于年龄较大的儿童和青少年,如果碎片脱落,可能导致永久性关节损伤。

软骨的状态至关重要。稳定型病变(软骨仍牢固附着,生长板仍开放)有真正仅通过休息即可愈合的机会。不稳定型病变(开裂、隆起或已松动)通常无法自行愈合,通常需要手术干预。

我们能做什么

对于稳定的病变,首要且最重要的一步是停止加重病情的活动(禁止投掷,患肢禁止负重)数月,待影像学检查显示骨骼愈合后,再逐步恢复活动。对于骨骺板尚未闭合的年轻运动员,许多此类病变可通过这种方式完全愈合。休息并非“无所事事”;它本身就是治疗手段。

当病变不稳定、已形成游离体,或经休息后未能缓解时,通常建议手术治疗。此类手术几乎均通过关节镜(微创)手术进行,具体术式选择取决于病变类型:

  • 清理并促进愈合: 切除受损碎片,并在暴露的骨面上制造微小骨孔(微骨折),以促使新生修复组织层形成。此法适用于较小的病变。
  • 将碎片固定复位: 如果游离碎片较大且质量良好,有时可用针或螺钉将其重新固定原位。
  • 缺损表面重建: 对于较大的病变,尤其是位于关节边缘的病变,可移植健康的软骨-骨栓以重建关节面(移植手术)。

您的外科医生将根据病变的大小、位置以及软骨是否可保留来决定采用何种术式,通常以磁共振成像(MRI)检查结果为指导。

预期情况

总体预后良好,尤其是在问题被早期发现且病变仍稳定时。许多患有稳定病变的年轻患者通过休息即可愈合并重返运动。对于不稳定病变进行手术后,大多数患者可获得良好的疼痛缓解和有意义的手臂活动度恢复,多数运动员能够重返运动,但可能需要数月时间和结构化的康复计划。

需坦诚说明几点注意事项。较大的病变、延伸至关节外缘的病变,以及骨骺已闭合的肘关节,预后相对较差,更可能需要手术治疗。部分患者可能遗留一定程度的伸直受限,且长期来看,显著病变可能略微增加晚年发生肘关节炎的风险,这也正是早期识别和保护关节至关重要的原因。

何时就医

  • 年轻投掷运动员或体操运动员出现持续性肘外侧疼痛,且经过一到两周的休息后仍未缓解;在继续运动前应先进行评估。
  • 肘关节伸直受限: 无法完全伸直肘关节是值得检查的早期警示信号。
  • 卡顿、弹响或肘关节交锁: 这提示可能有碎片松动,需要进行影像学检查。
  • 活动后反复出现的肿胀。
  • 骨骼未成熟运动员出现上述任何症状均需及时关注,因为在骨骺板尚未闭合时发现病变,最有可能在不进行手术的情况下愈合。

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