A 2.5-year-old neutered male British Shorthair was presented with chronic lameness that had developed acutelyafter a jump on the bed. On clinical examination, moderate lameness was observed left hind and muscle atrophy waspresent. On palpation, the problem was located in the hip region. A ventrodorsal radiograph of the hips showed anirregular and radiolucent area in the femoral neck and a widened space between the femoral head and -neck at thelevel of the growth plate. Based on these findings, the conclusion was an old Salter-Harris type 1 fracture of the leftfemoral neck. After excision of the femoral head and -neck, the cat was again presented with symptoms right hind.On the radiographic examination of the hips, loosening of the right femoral head was visible. The diagnosis was metaphysealosteopathy of both hips. After a second excision of the femoral head and -neck, the cat recovered completely.This case demonstrates that the diagnosis of metaphyseal osteopathy is often missed, because of the initially vaguesymptoms and the similarity to a fracture of the femoral neck on radiography. The case also shows that it is importantto consider metaphyseal osteopathy in the differential diagnosis in cats suffering from fractures of the proximalfemoral neck after mild trauma.