65 有關腔室症候群（compartment syndrome）的敘述，下列何者錯誤？

股骨骨折最常造成腔室症候群

當腔室內壓力大於30 mmHg，就需要考慮為腔室症候群

理學檢查可藉由足部或足趾背屈活動（passive muscle stretch）引起疼痛來懷疑此病變

開放性骨折較不會產生腔室症候群

ans A

Common causes of compartment syndrome include tibial or forearm fractures

股骨 is femur: this one is assoiated with avascular necrosis

Symptoms and signs

There are classically 5 "Ps" associated with compartment syndrome — pain out of proportion to what is expected, paresthesia, pallor, paralysis, pulselessness; sometimes a 6th P, for polar/poikilothermia (failure to thermoregulate) is added. Of these, only the first two are reliable in the diagnosis of compartment syndrome.^[2][3] Paresthesia, however, is a late symptom.