May Be Caused by

 Common

Battered child syndrome

Cushing syndrome

March fracture

Steroid medication

Stress fracture

Unrecognized trauma

 Uncommon

Congenital insensitivity to pain

Familial callus formation

Multiple myeloma with pathologic fractures

Neuropathic arthropathy

Osteogenesis imperfecta

Paralytic disorders

Renal osteodystrophy