What is Ulnar Longitudinal Deficiency (ULD)?
Ulnar variance (also known as Hulten variance) refers to the relative lengths of the distal articular surfaces of the radius and ulna. Ulnar variance may be: neutral (both the ulnar and radial articular surfaces at the same level) positive (ulna projects more distally); negative (ulna projects more proximally); Variance is independent of the length of the ulnar styloid process.
The ulna is a long bone in the forearm. It lies medially and parallel to the radius, the second of the forearm bones.The ulna acts as the stabilising bone, with the radius pivoting to produce movement. Proximally, the ulna articulates with the humerus at the elbow joint. Distally, the ulna articulates with the radius, forming the distal radio-ulnar joint.
Congenital deficiency of part of distal ulna affecting the distal radio-ulnar joint is a rare disorder. It is even rarer to find the association of proximal radio-ulnar joint dislocation along with distal ulnar deficiency. This type of congenital forearm anomaly is difficult to treat. Conversion to a single bone forearm in the expense of pronation-supination movement is a viable option.
Ulnar nerve entrapment is a condition where the ulnar nerve becomes physically trapped or pinched, resulting in pain, numbness, or weakness, primarily affecting the little finger and ring finger of the hand. Entrapment may occur at any point from the spine at cervical vertebra C7 to the wrist; the most common point of entrapment is in the elbow (Cubital tunnel syndrome). Prevention is mostly.
Ulnar definition, the bone of the forearm on the side opposite to the thumb. See more.
Ulnar Tunnel Syndrome: Introduction. Ulnar tunnel syndrome is a common disorder that can result from a variety of causes and can lead to ulnar nerve dysfunction and difficulties with the sensation and functioning of the hand and fingers and pain in the forearm and hand. Ulnar tunnel syndrome can be the result of trauma or long-term compression of the ulnar nerve, a peripheral nerve that runs.
Definition: The ulnar nerve is a peripheral nerve which originates at the brachial plexus from the medial cord of nerve roots C8 and T1. This nerve is the largest unprotected nerve of the human body, thus making it prone to injury. The ulnar nerve runs along the medial aspect of the arm passing posteriorly to the medial epicondyle of the humerus, and entering the forearm deep to the.