ARTICULATIONS. 



ends of the fourth and fifth metatarsals. Its capsule is com- 

 plete and presents the following tarso-metatarsal ligaments, 

 viz.: dorsal, antero-posterior flat bands, the fifth metatarsal 

 receiving one from the cuboid, and the fourth metatarsal one 

 each from the cuboid and external cuneiform; and plantar, 

 similar weak bands connecting the cuboid with both metatar- 

 sals, and including transverse fibres between the external cu- 

 neiform and fifth metatarsal, and other fibres from the long 

 plantar ligament to both metatarsals. The synovial membrane 

 lining it is distinct, and sends a prolongation between the two 

 outer metatarsals. [313] 



Intermetatarsal Joints. These are formed between the con- 

 tiguous sides of the bases of the four outer metatarsals. Each 

 joint has an incomplete capsule, which communicates with the 

 tarso-metatarsal joint behind it and is lined by synovial mem- 

 brane prolonged therefrom. The ligaments are transverse 

 bands connecting the bases, viz. : dorsal, plantar, and interos- 

 seous. [314] 



The transverse metatarsal ligament lies upon and connects the 

 plantar aspects of the heads of all the metatarsals: it sends 

 prolongations (ligamenta accessoria plantaria) to the plantar 

 fibrous plates of the metatarso-phalangeal joints. [314] 



Metatarso-phalangeal Joints. These modified enarthrodial 

 diarthroses are formed between the heads of the metatarsals 

 and proximal ends of the first phalanges. Each has a modified 

 capsule which is lined by synovial membrane and presents the 

 ligamenta collateralia, strong cord-like bands connecting the 

 contiguous rough surfaces on the inner and outer sides. Ex- 

 pansions of the extensor tendons practically form the capsule 

 dorsally. The plantar aspect of the capsule consists of a fibrous 

 plate which is grooved for the long flexor tendons ; on the great 

 toe it develops two large sesamoid bones within itself. [314] 



Interphalangeal Joints. These ginglymus diarthroses are 

 formed between the contiguous ends of the phalanges. Each 

 has a capsule whose dorsal aspect is either very thin or limited 



[269] 



