310 



THE MUSCLES OF THE OX 



The reinforcing bands from the suspensory hgament are arranged as in the 

 fore limb. 



4. The extensor brevis resembles that of the horse, but is inserted on the ten- 

 don of the anterior extensor only. 



The peroneus longus (not present in the horse) is situated in front of the lateral 

 extensor. It arises on the external condyle of the tibia and the fibrous band which 

 represents the shaft of the fibula. Its tendon passes downward and backward 

 over the outer surface of the hock, crosses over that of the lateral extensor and under 



Fig. 224. — Distal Part of Iamb of Ox with Syno- 

 vial Sheaths and Burs.* Injkcted, An- 

 terior View. 



/, Tendon of extensor digiti tertii, with bursa 

 (/'); 2, tendon of anterior extensor; 2', branch of 2, 

 with synovial sheath (2"); .?, tendon of extensor digiti 

 quarti, with bursa (.3'); a, metatarsus; 6, first phalanx; 

 c, second phalan.x. (After Schmidtchen.) 



Fig. 225. — Distal Part of Limb of Ox with Syno- 

 vial Sheaths Injected, Posterior View. 

 /, Superficial flexor tendon; 1' , 1' , branches of 

 1 ; 1" , }'" , upper {>art of synovial sheaths of 1' , 1' ; 2, 

 deep fle.xor tendon; 2', 2", branches of 2; 2", upper 

 part of synovial sheath of 2' ; S, S, lateral branches of 

 interosseus medius or su.spensory ligament; S' , branch 

 of same to superficial flexor tendon; a, fetlock joint; 

 6, i)astern joint; c, coffin joint; rf, e, annular ligaments; 

 /, crucial interdigital ligament. (After Schmidtchen.) 



the lateral ligament, and ends on the first tarsal bone (Cuneiform parvum). It is 

 enveloped by a synovial sheath. It would apparently act as an inward rotator 

 at the hock joint. 



The peroneus tertius is a well-developed muscle which arises on the common 

 tendon with the long and internal extensors. It has a large, fusiform belly, which 

 is superficially situated on the front of the leg. Close to the tarsus it ends on a 

 flat tendon, which is perforated by that of the tibialis anterior, and ends on the 

 large metatarsal and second and third (fused) tarsal bones (Cuneiform magnum). 



The tibialis anterior is smaller, and arises by two heads. The larger head 



