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What is a Joint?

A joint is the connection of two or more bones and the ability for motion to occur relative to one another. The space between these bones is joint workspace, and the connective tissu...

What is the Knee Joint?

The knee joint is the space (i.e., joint space) where the thigh bone (i.e., femur) articulates to the shin bone (i.e., tibia). It is a hinge joint, which means: the thigh bone...

What is the Hip Joint?

The big toe joint is the space (i.e., joint space) where the big toe bone (i.e., proximal phalanx bone) articulates to the foot bone (i.e., metatarsal bone). It is a hinge join...

What is the Elbow Joint?

The elbow joint is the space (i.e., joint space) where the arm bone (i.e., humerus) articulates to the forearm bones (i.e., radius and ulna). It is a hinge joint, which means...

What is the Hip Joint?

The hip joint is the space (i.e., joint space) where the thigh bone (i.e., femur) articulates to the pelvis (i.e., acetabulum). It is a ball-and-socket joint, which means: the ...

What is the Shoulder Joint?

The shoulder joint is the space (i.e., joint space) where the arm bone (i.e., humerus) articulates to the shoulder blade (i.e., scapula). It is a ball-and-socket joint, wh...

What is the Lumbar Spine?

The lumbar spine is the bottom section of your spine located between the thoracic spine (i.e., mid-back) and the tailbone. It consists of five vertebrae, labeled L1-L5, that...

What is the Thoracic Spine?

The thoracic spine is the middle section of the spine located between the cervical spine (i.e., neck) and lumbar spine (i.e., low back). It consists of 12 vertebrae, label...

What is the Cervical Spine?

The cervical spine is the portion of the spine that runs from the base of the skull down to the shoulders. It consists of seven vertebrae, labeled C1-C7, that are stacked ...