Traumatic dislocation

…Pathological dislocations are caused by deformation or damage to the joint as a result of various diseases, and the appearance of dislocations varies widely depending on the disease that caused them. Below, we will discuss traumatic dislocations. Unlike congenital and pathological dislocations, traumatic dislocations always involve a tear in the joint-supporting tissue, including the joint capsule, and the femoral head escapes from the joint capsule through the tear. In the case of a dislocation, symptoms similar to those of a fracture, such as swelling, deformation, pain, and functional impairment, appear, but the affected limb takes a position specific to each dislocation, and when an attempt is made to move the affected limb from this position, elastic resistance is observed, and it moves slightly, but when the force is released, it returns to its original position. …

*Some of the terminology that refers to "traumatic dislocation" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…病的脱臼とは種々の病気の結果，関節部位に変形や損傷を生じて脱臼の起こったもので，その原因となる病気によって脱臼の様相もまた多種多様である。以下，外傷性脱臼について述べるが，外傷性の場合は先天性，病的脱臼と異なり，関節包をふくむ関節支持組織に必ず断裂があり，その断裂した裂隙から骨頭が関節包外に逸脱する。脱臼の場合，腫張･変形･疼痛･機能障害など骨折と同じような症状が現れるが，患肢はそれぞれの脱臼に特有な肢位をとり，この肢位から患肢を動かそうとすると弾力的な抵抗がみられ，わずかに動くが，力をぬくとまた元の肢位に戻ってしまう現象がみられる。…

※「外傷性脱臼」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報