Problem: An overweight adolescent boy complains of pain in his hip that radiates to the medial aspect of his knee. He denies trauma and his not had a fever. You note upon exam that he is walking with a limp. The most likely diagnosis is:
a. Transient toxic synovitis
b. Slipped capital femoral epiphysis
c. Avulsion fracture of the tibial tuberosisty
d. Legg-Calve-Perthes