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顴骨顴弓骨折有哪些臨床表現?

Posted By vickong pun     July 14, 2021    

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顴骨顴弓骨折有哪些臨床表現?

  顴骨顴弓骨折有哪些臨床表現?

(1)顴面部塌陷:顴骨、顴弓骨折後骨折塊移位方向主要取決於外力作用的方向,多發生內陷移位。
在傷後早期,可見顴面部凹陷
;隨後,由於局部腫脹,凹陷畸形並不明顯,易被誤認為單純軟組織損傷。
待數日後腫脹消退,又出現局部塌陷。

(2)張口受限:由於骨折塊發生內陷移位,壓迫顳肌和咬肌,阻礙喙突運動,導致張口疼痛和張口受限。

(3)複視:顴骨構成眶外側壁和眶下緣的大部分。
顴骨骨折移位後,可因眼球移位、外展肌滲血和局部水腫以及撕裂的眼下斜肌嵌入骨折線中、限制眼球運動等原因而發現複視。

(4)淤斑:顴骨眶壁有閉合性骨折時,眶周皮下、眼瞼和結膜下可有出血性淤斑。

(5)神經症狀:顴骨上頜突部骨折可能損傷眶下神經,致使該神經支配區有麻木感。

骨折時如同時損傷面神經顴支,則發生眼瞼閉合不全。

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