Cubital Tunnel Syndrome
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  Cubital tunnel syndrome



Cubital tunnel syndrome

   A form of mononeuropathy due to compression or other injury of the ulnar nerve at the elbow. Symptoms of the cubital tunnel syndrome may include pain and numbness along the ulnar aspect (the little finger side) of the hand and forearm, and weakness of the hand.

RELATED TERMS
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Mononeuropathy
A form of diabetic neuropathy affecting a single nerve. The eye is a common site for this form of nerve damage.|See also: Neuropathy.

Compression
1. The act of pressing together. As in a compression fracture, nerve compression, or spinal cord compression. 2. To shorten in time. In embryology, there may be compression of development with some stages even omitted.

Injury
Injury is damage or harm caused to the structure or function of the body caused by an outside agent or force, which may be physical or chemical.

Ulnar
Relating to the ulna.

Nerve
Tissue that conveys sensation, temperature, position information to the brain.

Elbow
The juncture of the long bones in the middle portion of the arm. The bone of the upper arm (humerus) meets both the ulna (the inner bone of the forearm) and radius (the outer bone of the forearm) to form a hinge joint at the elbow. The radius and ulna also meet one another in the elbow to permit a small amount of rotation of the forearm. The elbow therefore functions to move the arm like a hinge (forward and backward) and in rotation (outward and inward). The biceps muscle is the major muscle that flexes the elbow hinge, and the triceps muscle is the major muscle that extends it. The primary stability of the elbow is provided by the ulnar collateral ligament, located on the medial (inner) side of the elbow. The outer bony prominence of the elbow is the lateral epicondyle, a part of the humerus bone. Tendons attached to this area can be injured, causing inflammation or tendonitis (lateral epicondylitis, or tennis elbow). The inner portion of the elbow is a bony prominence called the medial epicondyle of the humerus. Additional tendons from muscles attach here and can be injured, likewise causing inflammation or tendonitis (medial epicondylitis, or golfer's elbow).

Cubital
1. Pertaining to the elbow. 2. Pertaining to the forearm and hand. 3. Pertaining to the ulna.

Syndrome
A grouping of signs and symptoms, based on their frequent co-occurrence, that may suggest a common underlying pathogenesis, course, familial pattern, or treatment selection.

Pain
An unpleasant sensory or emotional experience primarily associated with tissue damage, or described in terms of tissue damage, or both.

Forearm
The portion of the upper limb from the elbow to the wrist. In popular usage, the arm extends from the shoulder to the hand. However, in medical terminology, the arm refers to the upper extremity extending from the shoulder only to the elbow. The arm is thus distinguished in medical usage from the forearm, which extends from the elbow to the wrist.The forearm has 2 bones: the radius and ulna.



SIMILAR TERMS
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Cubicin
Cubicin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): daptomycin.

Cubital
1. Pertaining to the elbow. 2. Pertaining to the forearm and hand. 3. Pertaining to the ulna.

Cubital tunnel
The opening between the two heads of a muscle through which the ulnar nerve passes at the elbow and enters the forearm. (The muscle is called the flexor carpi ulnaris.) Compression of the ulnar nerve in this passageway results in the cubital tunnel syndrome.

Cubital Tunnel Syndromes
Compression of the ULNAR NERVE in the cubital tunnel, which is formed by the two heads of the flexor carpi ulnaris muscle, humeral-ulnar aponeurosis, and medial ligaments of the elbow. This condition may follow trauma or occur in association with processes which produce nerve enlargement or narrowing of the canal. Manifestations include elbow pain and PARESTHESIA radiating distally, weakness of ulnar innervated intrinsic hand muscles, and loss of sensation over the hypothenar region, fifth finger, and ulnar aspect of the ring finger. (Joynt, Clinical Neurology, 1995, Ch51, p43)

Cubitus
1. The elbow. 2. The forearm and hand. 3. The ulna.

Cubitus valgus
A deformity of the elbow resulting in an increased carrying angle (so that, with the arm extended at the side and the palm facing forward, the forearm and hand are held at greater than 15 degrees). Cubitus valgus can be due to a congenital malformation, as in Turner syndrome and Noonan syndrome, or be due to a fracture.

Cubitus varus
A deformity of the elbow resulting in a decreased carrying angle (so that, with the arm extended at the side and the palm facing forward, the forearm and hand are held at less than 5 degrees). There is deviation of the forearm toward the midline of the body. Cubitus varus is also called the gun stock deformity.



PREVIOUS AND NEXT TERMS
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CT, Ultrafast
Electron beam computerized tomography (EBCT), a new (and controversial) noninvasive test for the detection of coronary artery disease (CAD). Ultrafast computerized tomography (CT) is designed to measure calcium deposits in the coronary arteries.

CTL
Cytotoxic T-lymphocyte.

CTS
Carpal tunnel syndrome.

Cubital
1. Pertaining to the elbow. 2. Pertaining to the forearm and hand. 3. Pertaining to the ulna.

Cubital tunnel
The opening between the two heads of a muscle through which the ulnar nerve passes at the elbow and enters the forearm. (The muscle is called the flexor carpi ulnaris.) Compression of the ulnar nerve in this passageway results in the cubital tunnel syndrome.

Cubital tunnel syndrome

Cubitus
1. The elbow. 2. The forearm and hand. 3. The ulna.

Cubitus valgus
A deformity of the elbow resulting in an increased carrying angle (so that, with the arm extended at the side and the palm facing forward, the forearm and hand are held at greater than 15 degrees). Cubitus valgus can be due to a congenital malformation, as in Turner syndrome and Noonan syndrome, or be due to a fracture.

Cubitus varus
A deformity of the elbow resulting in a decreased carrying angle (so that, with the arm extended at the side and the palm facing forward, the forearm and hand are held at less than 5 degrees). There is deviation of the forearm toward the midline of the body. Cubitus varus is also called the gun stock deformity.

Cuboid bone
The cuboid bone is the outer bone in the instep of the foot. It is called the cuboid bone because it is shaped like a cube. The cuboid bone articulates posteriorly (it has a joint in back) with the calcaneus (the heel bone) and anteriorly (it has joints in front) with the 4th and 5th metatarsals (bones just behind the 4th and 5th toes).

Cul-de-sac
An anatomic cul-de-sac is a blind pouch or cavity that is closed at one end.

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