The Anatomy that the Elbow

The elbow is a hinged joint made up of three bones, the humerus, ulna, and radius. The ends of the bones space covered with cartilage. Cartilage has actually a rubbery consistency that enables the joints to slide easily versus one another and absorb shock. The bones are held along with ligaments that kind the joint capsule. The joint capsule is a fluid filled sac that surrounds and lubricates the joint.

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The crucial ligaments that the elbow room the medial collateral ligament (on the within of the elbow) and also the lateral collateral ligament (on the exterior of the elbow.) with each other these ligaments provide the main source of stability for the elbow, holding the humerus and also the ulna strictly together. A 3rd ligament, the annular ligament, stop the radial head tight against the ulna.

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There are tendons in your elbow that attach muscle come bone. The necessary tendons that the elbow are the biceps tendon, i m sorry is fastened the biceps muscle top top the front of your arm, and the triceps tendon, which attaches the triceps muscle ~ above the back of your arm.

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The muscle in your forearm cross the elbow and also attach to the humerus. The exterior (lateral) bang just above the elbow is called the lateral epicondyle. Many of the muscles that straighten the fingers and also wrist come together and attach come the medial epicondyle, or the bump on the within of your arm just above the elbow. These two tendons are vital to understand due to the fact that they are usual locations the tendonitis.

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All that the nerves that take trip down the arm pass across the elbow.

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Three main nerves start together in ~ the shoulder the radial nerve, the ulnar nerve and also the medial nerve. This nerves space responsible because that signaling your muscles to work and to likewise relay sensations such together touch, pain and also temperature.