Thorns in the bone.
D001847:Bone Diseases / Q000209:etiology*; D001842:Bone and Bones / Q000293:injuries*; D002648:Child; D005547:Foreign Bodies / Q000150:complications; D006801:Humans; D010015:Osteolysis, Essential / Q000209:etiology; D010522:Periostitis / Q000209:etiology; D014947:Wounds and Injuries / Q000150:complications