There are four sufferers , suffering from syndactyly and adactylism , with the lack of metacarpus and metatarsus in two generations 該家系2代4人患有并指(趾)缺指(趾) ,同時伴有掌(跖)骨缺少。
In human anatomy, the metacarpus is the intermediate part of the hand skeleton that is located between the phalanges (bones of the fingers) and the carpus which forms the connection to the forearm. The metacarpus consists of metacarpal bones.