In which of the following joints an acute metaphyseal osteomylitis can complicate into an acute septic arthritis
a. The physis of the proximal femur is within the hip joint capsule and if a subperiosteal abscess ruptures the periosteum, it may spread to the joint thus causing a septic arthritis.
b. The epiphysis of the proximal humerus distal fibula and the radial neck also are intra articular and infection in these areas can cause septic arthritis.