Femoral neck stress fracture in a 31-year-old female marathon runner

Femoral neck stress fracture in a 31-year-old female marathon runner.
(A) Anteroposterior radiograph shows subtle sclerosis at the site of an incomplete nondisplaced midcervical fracture of the femoral neck (arrow).
(B) T1-weighted MR image confirms the fracture line involving the femoral neck (arrow).