<Li> Stifle joint (femoropatellar joint): actually composed of three joint compartments: the femoropatellar joint, the medial femorotibial joint, and the lateral femorotibial joint, which are stabilized by a network of ligaments . The stifle has an articular angle of about 150 degrees . </Li> <Li> Tarsus (hock): consists of 6 bones (of which one is made up of the fused 1st and 2nd tarsal bones) aligned in 3 rows . The largest bone in the hock, the calcaneus or fibular tarsal bone, corresponds to the human heel, and creates the tuber calcis (point of hock). It is to this point that the tendon of the gastrocnemius, portions of the biceps femoris, and portions of the superficial digital flexor attach . </Li> <P> Bones of the lower limb, present in both the front and hind legs, include the cannon bone (3rd metacarpal / 3rd metatarsal), splint bones (2nd and 4th metacarpal / metatarsal), proximal sesamoid bones, long pastern (proximal or 1st phalanx), short pastern (middle or 2nd phalanx), coffin bone (distal or 3rd phalanx), and navicular bone (distal sesamoid). There are usually slight differences in these bones when comparing the front and the hind . The 3rd metatarsal is about 1 / 6 longer than the 3rd metacarpal . Similarly, the 2nd and 4th metatarsals are longer in length when compared to their front - end counterpart . In the hindlimb, the 1st phalanx is shorter and the 2nd phalanx is longer than in the frontlimb . In addition, the 2nd and 3rd phalanx are narrower in the hind limb . The angle created by these three bones in the hindleg is steeper by about 5 degrees, therefore making the pastern angle steeper behind than in front . </P> <Ul> <Li> Arthritis (horse) <Ul> <Li> Degenerative joint disease (DJD), such as bone spavin, ringbone, omarthritis </Li> <Li> Inflammatory joint disease such as Carpitis (sprained knee), osselets </Li> </Ul> </Li> <Li> Bucked shins </Li> <Li> Curb </Li> <Li> Degenerative suspensory ligament desmitis (DSLD), and sprains of the suspensory ligament </Li> <Li> Fractures </Li> <Li> Locked kneecap (delayed patellar release or intermittent upward fixation of the patella) </Li> <Li> Navicular disease </Li> <Li> Osteochondrosis (horse) </Li> <Li> Sesamoiditis </Li> <Li> Splints </Li> <Li> Wry nose </Li> </Ul>

How many cannon bones does a horse have
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