THE LIMB IN SECTION 37 



perforans tendon, is the tarso-metatarsal ligament, and towards the inner 

 side of the joint this ligament is attached to a small bone, which in 

 section appears elongated from before to behind. This bone is the 

 cuneiform parvum. The deep metatarsal vein is observed to be in front 

 of the tarso-metatarsal ligament. In front of this vein is the largest 

 bone represented in the Plate. This is the cuneiform magnum. It is 

 somewhat triangular in outline, the apex of the triangle being directed 

 backwards. Outwardly the bone is articulated to the cuboid and these 

 two bones are attached to one another by a powerful interosseous ligament 

 which is attached to their concentric non-articular areas, and which is 

 plainly represented in the Plate. Inwardly the cuneiform magnum is 

 articulated to the cuneiform parvum, and these two bones are similarly 

 connected by an interosseus ligament which is also visible. Running 

 from the inner aspect of the cuneiform magnum on to the cuneiform 

 parvum is the internal lateral ligament, whilst superficially placed to this, 

 and immediately subcutaneous, are two small nerves. These are 

 cutaneous branches from the internal saphena nerve and they are placed 

 one opposite each of the two cuneiform bones. 



Still more anteriorly, and also superficially placed on the antero- 

 internal aspect of the joint, is another small nerve, which is the 

 cutaneous branch from the posterior tibial nerve, referred to in con- 

 nection with posterior tibial neurectomy in the chapter dealing with 

 nerves. 



On the anterior aspect of the cuneiform magnum is the astragalo- 

 metatarsal ligament, some of the fibres of which are attached to this 

 bone. Superficially placed to this ligament is the anterior common 

 ligament of the joint, which is a thin sheet extending right across the 

 front of the joint, which it closes anteriorly. Placed superficially 

 on this ligament, and on the antero-internal aspect of the joint, is the 

 anterior root of the internal saphena vein. This is the upward 

 continuation of the internal metatarsal vein, and is the vessel con- 

 cerned in that fictitious ailment, " blood spavin." In the middle line 



