Anatomy 2 - Equine Hindlimb Osteology

drraythe's version from 2015-06-05 22:55


Question Answer
there are a lot of pics in this packet. Be sure to look at them.funwow
pelvis, know/name the major landmarkssacral tuber, coxal tuber, sacral promontory, pubic brim, wing of the Illium, ischial spine, ischial tuber, acetabulum w/ cotyloid cavity
what is the shape of the ischial tuberosity, ischial spine, and pelvic entrance (M and F)tuber. and spine= flat. female= round+wide, male=triangular and narrow
what is the pelvic floor like? the long axis?P.F.= flat, almost horizontal. L.A.= nearly straight
why are hip luxation/dislocations not common in the horse? (4)(1) deep acetabular cavity (2) supported by labrum acetabulare (3) accessory ligament (extension of prepubic tendon) (4) lig of the head of the femur is strong
prox end of femur landmarks (6)(1) Head (2) fovea capitis (3) lesser trochanter (looks like a ridge) (4) greater trochanter (CA AND CR PARTS) (5) third trochanter (6) trochanteric fossa
bursa of prox end of femur?trochanteric bursa
landmarks of the shaft of the femur? (3)supracondyloid fossa, and the L and M supracondyloid tuberosities
landmarks of the distal femur? (6)(1) L+M condyles (2) L+M epicondyles (3) intercondyloid fossa (4) extensor fossa (5) popliteal fossa (6) M+L ridges of the trochlea
what are the features of the distal femur which play an important role in the patellar lock mechanism?trochlea and its ridges
what m attaches to the lesser trochanter?illiopsoas
supracondyloid FOSSA associated with what bone/m?femur (fossa is ca) superficial digital flexor
supracondyloid TUBEROSITIES associated with what m?gastrocnemius
what attaches to the extensor fossa of the femur?long digital extensor ( so long it goes all the way to the femur)
what is the "tongue shaped thing" on the patella?medial parapatellar fibrocartilage
how many tarsal bones are there in the horse?6 (8 in the carpus)
describe the (1) talus/calcaneus (2) the 1+2 tarsal bones (3) 4th tarsal bone(1) thicker and shorter. (2) fused and small (3) irregular shape, occupies 2 rows of tarsal bones
what is an important feature to note about the talus?it has a trochlea which is angulated (medially?)
where do the extensor mm attach (originate) on the hock?on the TIBIA'S sulcus muscularis
what are the three parts of the fibula?head, body, and tail
where does the tail of the fibula extend to?to the distal third of the tibia (like the ulna and the radius. hm.)
6 bones of the tarsus are?talus, calcaneus (has the sustentaculum tali), tarsal 1+2, central tarsal, tarsal 3, tarsal 4
know where the sustentaculum tali and the vascular foramen of the talus areblah
features of the proximal tibia (6)(1) L+M condyle (2) sulcus muscularis (3) tibial crest (4) tibial tuberosity (5) spine/intercondyloid eminence (6) fibular articulation
feature of the shaft of the tibia?caudal has rough spot for mm attachment
feature of the distal tibia?M and L malliolus
name/describe the metatarsals2+4 are small and 3 is large
what is the 3rd metatarsal aka?cannon bone
what are the 2+4 metatarsals aka?splint bones
P1 aka? features? (2)long pastern. rough areas for attachments of distal sesmoidean ligs on plantar aspect. Triangular area= TRIAGON
P2 aka? how does the P2 of forelimb compare to hindlimb?short pastern. hindlimb is longer than forelimb.
P3 aka? what are the three surfaces? the backwards projecting processes?aka coffin. Dorsal, solar, and articular surfaces. Plantar processes.
what is the extensor process of P3 good for?common(fore)/long(hind) digital extensor attach here
compare fore/hindlimb P3?hind is narrower than fore
what are the ungual cartilages/collateral cartilages?like extensions off of the the plantar cartilages, i think. If ossified, called "side bones"
what is the solar foramina?(P3) accommodate terminal branches of the plantar proper digital arteries, which anastomose to form the terminal arch inside the bone
what are the sesamoid bones of the foot? their purpose?SUPPORT. 2 proximal and 1 distal (aka flat/navicular bone) \
where do the proximal sesamoid bones lie?plantar side of fetlock, at the metatarso-phalangeal articulation
where does the navicular bone/distal sesamoid lie?plantar side, at distal interphalangeal articulation
what is a scutum? what are the 3 scutums?any fibrocartilagenous sliding surface for tendons. prox (fetlock) middle (pastern) distal (navicular)
what is the area between the 2 splint bones?metatarsal/carpal groove (NOT palmar/plantar)