A client with a history of osteoarthritis in his hip, which he refers to as "bad hip," is also complaining of knee pain. The physiological principle behind this would include the fact that:
A) All joints of an extremity are innervated by the same peripheral nerves as they travel down the limb.
B) If the hip is dislocated, then the knee is not staying in the correct alignment.
C) There is more than likely a tear in the synovial membrane, which is impacting the amount of plasma diffusing between the vessels and the joint.
D) Synovial tissue has received an injury that is referring pain to the knee.
Ans: A
Feedback:
The nerve supply to joints is provided by the same nerve trunks that supply the muscles that move the joints. These nerve trunks also supply the skin over the joints. As a rule, all the joints of an extremity are innervated by the same peripheral nerves as they travel down an extremity. The blood supply to a joint arises from blood vessels that enter the subchondral bone at or near the attachment of the joint capsule and form an arterial circle around the joint. The synovial membrane has a rich blood supply, and constituents of plasma diffuse rapidly between these vessels and the joint cavity. Because many of the capillaries are near the surface of the synovium, blood may escape into the synovial fluid after relatively minor injuries. Healing and repair of the synovial membrane usually are rapid and complete. This is important because synovial tissue is injured in many surgical procedures that involve the joint.
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