Undiagnosed Hoffa fracture of medial femoral condyle presenting as chronic pain in a post-polio limb.

Isolated coronal fracture of medial femoral condyle with intact lateral femoral condyle is extremely rare. A high index of suspicion is necessary for early diagnosis especially in cases of undisplaced fractures. Here we report a case of medial Hoffa fracture in a post-polio limb presenting as chronic pain. Management of such fractures in limbs affected by late sequelae of poliomyelitis is particularly problematic in view of osteoporosis and osseous hypoplasia. The fracture was approached through medial parapatellar arthrotomy and fixation was done with cannulated cancellous screws in anteroposterior direction. Union was achieved at 16 weeks.