Fundamentals of Anatomy and Physiology

The Articular System

Fibular collateral ligament

Lateral condyle of femur

Lateral meniscus

Lateral condyle of tibia

Tibia

Fibula

(A)

(B)

Figure 8- 5 (A) The structure of the uniaxial hinge joint of the
knee.

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Femur

Posterior cruciate ligament

Medial condyle of femur

Tibial collateral ligament

Anterior cruciate ligament

Medial meniscus

Medial condyle of tibia

Patella

Tendon of quadriceps

femoris muscle

Patellar ligament

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in the other (the trapezium, a carpal bone of the wrist),
while the other articular surface is reciprocally convex and
concave (the metacarpal bone in the thumb). Thus, the two
bones fit together. Refer to Figure 8-4 to study its
construction. Movement is possible in two planes at
right angles to each other: flexion and extension plus ab-
duction and adduction. This construction also permits
opposition of the thumb, an evolutionary advancement
allowing phenomenal dexterity of the hand to grasp and use
tools.