The possible causes of pain when the hand is straightened are elbow canal syndrome, lateral epicondylitis of the humerus, and stenosing tenosynovitis.
1. Elbow Canal Syndrome: It may be caused by the ulnar nerve being compressed, pulled or rubbed in the elbow canal, etc. When the hand is straightened, it will irritate the local area, and the patient may have symptoms such as numbness, numbness and swelling discomfort, and pain in the fingers.
2. Epicondylitis of the humerus: Epicondylitis of the humerus may be caused by chronic injury at the epicondyle of the humerus due to long-term and repeated forceful activities of the wrist, which triggers chronic injury at the epicondyle of the humerus. When the patient straightens the hand, it may stimulate the local lesion and cause pain.
3. Stenosing tenosynovitis: stenosing tenosynovitis may be caused by chronic strain injury, with soreness at the root of the fingers in the early stage. In some patients, the pain will radiate to the wrist or fingertips, and in severe cases, the fingers cannot be bent or straightened.
Hand straightening pain may also have tendon strains, rheumatoid arthritis and other causes, it is recommended to go to the regular hospital in time to improve the relevant examination, to clarify the cause of the disease, under the guidance of the doctor to carry out targeted treatment or treatment.