Pediatric emergency medicine trisk 0837 0837
Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (68.59 KB, 1 trang )
avulsed fragment. The visible ossified fragment may be small because the tibial
spine is mostly radiolucent cartilage.
Dislocations
In a child, the knee joint itself rarely dislocates; usually, the distal femoral or
proximal tibial epiphysis separates first. Dislocation occurs more frequently after
the growth plates have closed and usually with trauma that involves significant
force, such as a motor vehicle collision or contact sports. The knee will appear
obviously deformed with the tibia or femoral condyles abnormally prominent in
an anterior or posterior dislocation, respectively. Disruption of the popliteal artery
may occur with the dislocation, and the resulting hypoperfusion may be limb
threatening. Posterior tibial and dorsalis pedis pulses and peroneal nerve function
(sensation between the great and second toe and ankle dorsiflexion) must be
documented. Radiographs will confirm the diagnosis.
