Physeal Injuries
A 14-year-old boy is brought to the emergency department after a motorcycle collision. He has severe pain and deformity of his right thigh with an inability to bear weight. The distal leg is cool with diminished dorsalis pedis pulse compared to the contralateral side. Radiographs show a displaced Salter-Harris II fracture of the distal femur with posterior displacement of the metaphyseal fragment. Regarding distal femoral physeal injuries:
Mark each as TRUE or FALSE
The distal femoral physis is responsible for 70% of femoral growth and 40% of total lower limb lengt...
Mechanisms include hyperextension (most common) causing anterior displacement of the epiphysis, varu...
The distal femoral physis contributes only 20% of femoral growth; growth rate is 2mm per year; the p...
Salter-Harris classification applies: Type I is physis only (rare, seen in young children or birth i...
Growth arrest following distal femoral physeal injury occurs in 30-50% of cases, significantly highe...
Answer the questions to see explanations
Click T (True) or F (False) for each option