「The Palmar carpometacarpal ligaments (or volar) are a series of bands on the palmar surface of the carpometacarpal joints that connect the carpal bones to the second through fifth metacarpal bones. The second metacarpal is connected to the trapezium. The third metacarpal is connected to the trapezium, to the capitate, and to the hamate. The fourth and fifth metacarpals are connected to the hamate.The palmar carpometacarpal ligaments have a somewhat similar arrangement to the dorsal carpometacarpal ligaments, with the exception of those of the third metacarpal, which are three in number:a lateral one from the greater multangular, situated superficial to the sheath of the tendon of the Flexor carpi radialis;and intermediate one from the capitate;and a medial one from the hamate.」
また、「Wikipedia」(上記の英文)では、具体的にどの骨とどの骨が掌側手根中手靭帯によって結ばれているのかに言及していて「 the second through fifth metacarpal bones.」とあり、第1中手骨には付着していないという説明になっている。説明文において「trapezium(大菱形骨)」という単語が出てくるが、おそらく「tarapezoid(小菱形骨)」の間違いではないかと思われる。そこを修正してまとめたのが以下になる。