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交叉综合征

An overuse tendon problem of the back of the forearm, often confused with de Quervain's — its causes, and how rest, splinting or injection settle it.

前臂背侧示意图,显示拇指肌腱与腕伸肌腱交叉处,并在交叉处突出显示疼痛。
交叉综合征:拇指肌腱在腕部伸肌腱上方交叉处(距腕部数厘米处)发生摩擦,导致疼痛和肿胀。 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。

您的症状

交叉综合征会导致前臂背侧及拇指侧出现疼痛和肿胀,位置略高于手腕(大约距手腕背侧骨性隆起一个手掌宽度的距离)。疼痛并非位于腕关节本身,而是位于更上方,即前臂肌肉相互交叉的区域。

当您将手腕向后弯曲或活动拇指时,疼痛通常会加剧。这种症状常在经历一段时间重复性活动后出现,例如划船、举重、球拍类运动、园艺,或大量键盘操作或手腕负荷较重的工作。许多患者会注意到疼痛区域出现肿胀,部分患者在活动手腕时能感觉到甚至听到轻微的嘎吱声、吱嘎声或摩擦声,仿佛有物体在相互摩擦。这种现象有时被称为“湿皮革”声。

实际发生了什么

在前臂背侧,两组肌肉像字母X一样相互交叉。一组延伸至拇指;另一组向下延伸以驱动腕部运动。在它们交叉的位置,即腕关节上方几厘米处,肌腱在其光滑的腱鞘内来回滑动并相互交错。

当您进行大量重复性的腕部运动时,该交叉点会受到刺激并发生炎症。腱鞘内壁肿胀,摩擦力增加,组织变得触痛和肿胀,从而导致疼痛、肿胀和摩擦音。这是一种过度使用问题,而非由单次事故造成的损伤,也与De Quervain病不同。De Quervain病是一种相关的拇指侧肌腱问题,位置较低,正好位于腕部。交叉综合征的位置较高。

好消息是,一旦摩擦停止,受刺激的组织会很好地恢复平静,且该病症在大多数人中不会造成永久性损伤。

我们如何处理该问题

Kieran Hirpara 医生指导我们在诊所中管理该疾病的方案。我们首先采用非手术治疗,仅当症状在采取这些措施后仍持续存在时,才考虑手术。

几乎所有人都能无需手术而康复。主要治疗措施包括:

  • 休息以减轻诱发活动: 这是最关键的一步。减少划船、提重物或重复性动作几周,有助于炎症消退。
  • 腕部支具,使手腕保持轻微背伸位。这有助于休息交叉的肌腱,通常需佩戴几周。
  • 抗炎药片或凝胶(非甾体抗炎药,NSAIDs),以缓解疼痛和肿胀。
  • 冰敷患处,在活动后进行。

如果上述措施未能缓解症状,向肌腱鞘内注射皮质类固醇(通常由超声引导以确保准确性)通常能减轻炎症。对于极少数在所有这些措施后症状仍反复出现的患者,进行一项小手术以松解并清理受刺激的肌腱鞘非常有效。这种情况很少需要。

预期情况

大多数人通过休息相关活动并使用夹板,通常在数周至数月内即可恢复。预后极佳:这是一种确实会好转的疾病,且一旦炎症消退,通常不会遗留任何持久的无力或僵硬。

导致复发的主要原因是过早恢复相同的重体力或重复性活动。逐步恢复,并在适用时审视技术或装备(例如赛艇运动员的桨握法,或健身房中的杠铃握法),有助于永久避免复发。

何时就医

  • 前臂背侧疼痛和肿胀,经过数周的休息和夹板固定后仍未缓解。
  • 该区域出现咯吱声或摩擦音,或者每次恢复运动或工作任务时疼痛都会加剧。
  • 尽管休息但症状反复出现,值得进行评估,因为超声引导下的注射可能有助于缓解。
  • 任何发热、皮肤发红发热或肿胀迅速加重的情况:请立即就医,因为这提示可能存在单纯过度使用以外的其他问题。

深入探讨

Advanced reading: the deeper science (optional)

本节内容超出了您自身治疗决策所需的信息深度。交叉综合征值得额外阅读,主要在于其易混淆之处:它与德奎尔万腱鞘炎(de Quervain's tenosynovitis)相距仅数厘米,治疗方法不同,且用于区分两者的证据确实有限。

其位置,以及为何该位置即为完整诊断

两条走向拇指的肌肉在腕背侧约4至8厘米处跨越两条腕伸肌腱。该交叉点处的摩擦会在腕部活动时引起疼痛、肿胀,有时还可闻及或触及摩擦音。

位置即为诊断。De Quervain病在腕部本身、拇指侧骨性突起处有压痛。交叉综合征的压痛点明显位于前臂更近端。两者均由拇指和腕部活动诱发,且均可产生肿胀,但最大压痛点可将二者区分开来,且该区分足够可靠,通常无需影像学检查。

区分两种人群的特征

直接比较的样本量较小,共80例患者,但具有参考价值。与De Quervain病相比,交叉综合征在男性及优势手中更为常见,这一趋势既见于所有患者,也见于排除围产期女性后的亚组;此外,交叉综合征患者的症状持续时间明显更短 [1]。

上述特征均符合其发病机制。交叉综合征是由反复的抗阻腕背伸动作(如划船、举重训练、球拍类运动、重体力劳动)引起的摩擦性损伤,因此好发于优势侧及职业暴露人群。症状持续时间较短反映了该病往往在可识别的活动量改变后发生,而非隐匿性累积所致。

De Quervain病的对比在另一方向上具有启发性:排除围产期女性后改变了比较结果,这凸显了该病与产后期的高度相关性——而交叉综合征并不具备这一关联。

治疗及证据的客观陈述

绝大多数情况下,治疗以保守治疗为主:避免诱发症状的动作以相对休息,佩戴拇指人字形夹板,采取抗炎措施,并纠正导致该问题的技术或工作量。若上述措施无效,则向受累间隙注射皮质类固醇;仅对少数症状未缓解者保留第二间隙手术松解。

支持该治疗序列的证据基础较为薄弱。现有文献主要由病例系列和描述性报告组成;没有比较不同治疗选择的临床试验,目前可获得的最大的比较研究是上述的80例患者系列研究 [1]。该治疗阶梯建立在发病机制和临床经验之上,而非基于已证实的优越性,这一点值得明确指出,而非暗示存在比实际更坚实的基础。

从实际操作来看,这意味着在此处任何人能提供的最强有力支持就是诊断本身。因为一旦去除诱发负荷,该病症具有自限性,准确识别病变部位(从而确定需要调整的动作)便完成了大部分工作。

参考文献

[1] Sato J, Ishii Y, Noguchi H. 交叉综合征或De Quervain病患者中的临床及超声特征. J Hand Surg Eur Vol. 2015;41(2):220-5. https://doi.org/10.1177/1753193415614267


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