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Skeletal System

Joints

Which joint is the largest and most complex joint in the body?

Type of Joint Type of Movement Example
Planar Gliding Joints between carpals and tarsals
Hinge Flexion and extension Elbow, knee, and ankle joints
Pivot Rotation Atlantoaxial joint (between first and second vertebrae)
Condyloid Abduction and adduction Wrist joint
Saddle Flexion, extension, metacarpal abduction, adduction Carpometacarpal joint (between bone of thumb and carpal bone of wrist) circumduction
Ball-and-Socket Rotation, abduction, adduction, circumduction Shoulder and hip joints

The knee joint (tibiofemoral joint) is the most complex in the human body. It is comprised of three different joints: the medial femoral and medial tibial condyles, the lateral femoral and tibial condyles, and the articulation between the patella and the femur. The knee joint is capable of flexion, extension, and medial and lateral rotation to a certain degree. It is also the joint most vulnerable and susceptible to injury. Common knee injuries are tears to the anterior cruciate ligaments (ACL) and tears to the meniscus or cartilage.



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