Download talus

#3
lecture name: Appendicular skeleton
Written By: Batool Shafi
Edited By: Yousef Qandeel
Patella
It protects your knee and connects the muscles in the front of your thigh to
your tibia.
It is the largest sesamoid bone in the body.
The posterior surface of the patella articulates with the femur, and is
marked by two facets:
 Medial facet – articulates with the medial condyle of the femur.
 Lateral facet – articulates with the lateral condyle of the femur.
Tibia
Intercondylar eminence
* Proximal end:
1.Tibial
condyles
2.Tibial tuberosity: (anterior, patellar ligament)
3.Intercondylar eminence: (upward projection)
* Distal end
1.Medial
2.fibular
malleolus (Medial, articulate with talus)
notch (Lateral) forming distal tibiofibular joint.
Tarsals (7)
posterior
anterior
Articulation directions for each :
talus : the most superior tarsal bone. It has three articulations:



Superiorly: Ankle joint – between the talus and the bones of the leg
(the tibia and fibula), and it’s the only bone that articulates with
the fibula and tibia.
Inferiorly: with the calcaneus.
Anteriorly: with the navicular.
Calcaneus : underneath the talus, and has two articulations:
 Superiorly: with the talus.
 Anteriorly: with the cuboid.
navicular : has three articulations :

Posteriorly: with the talus.

Anteriorly : with the cuneiform bones.
Laterally : with the cuboid .

Cuboid : the most lateral bone, has three articulations :

Posteriorly: with the calcaneus .

Anteriorly : with two metatarsals
Medially : with the navicular .

.
The three cuneiforms: three articulations :



Anteriorly : with metatarsals .
Posteriorly : with the navicular .
Laterally : with the cuboid
Metatarsals (5)
They have four articulations:

Proximally: Tarsometatarsal joint – between the metatarsal
(1,2,3) bases with the cuneiforms and (4,5) with the cuboid
bone.

Laterally: between the adjacent metatarsals

Distally: Metatarsophalangeal joint – between the metatarsal
head and the proximal phalanx.