TIBIA (SHIN BONE)
The tibia is the medial of the two bones of the lower leg.
The proximal extremity is broad and flat and presents two condyles for
articulation with the femur at the knee joint.
The head of the fibula
articulates with the inferior aspect of the lateral condyle, forming the proximal
tibiofibular joint.
The distal extremity of the tibia forms the ankle joint with
the talus and the fibula.
The medial malleolus is a downward projection of bone
medial to the ankle joint.
FIBULA:
The fibula is the long slender lateral bone in the leg.
The
head or upper extremity articulates with the lateral condyle of the tibia,
forming the proximal tibiofibular joint, and the lower extremity articulates
with the tibia, and projects beyond it to form the lateral malleolus.
This
helps to stabilize the ankle joint.
PATELLA (KNEE CAP):
This is a roughly triangular-shaped sesamoid bone associated
with the knee joint.
Its posterior surfaced articulates with the patellar
surface of the femur in the knee joint and its anterior surface is in the
patellar tendon, i.e. the tendon of the quadriceps femoris muscle.
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