Kohler’s disease (avascular necrosis) of the head of metatarsal 2 with an irregular deformed metatarsal head and synovial swelling but without erosions 第二跖骨头端Kohler病（无血管性坏死），见不规则变形的跖骨头端和没有侵蚀的肿胀滑膜
Deformed metatarsal head and synovial swelling longitudinal 变形的跖骨头端和肿胀的滑膜，纵切面
