After rupture of the left radial flexor carpi radialis tendon, localized pain, swelling and impaired mobility may occur. 1. Localized pain and swelling: After rupture of the left radial flexor carpi radialis tendon, the tissues around the injury site may have poor blood circulation, resulting in obvious pain symptoms and swelling. At the same time, when touching the adjacent parts of the injury site, there will also be pain, and ecchymosis may also appear on the skin surface. 2. Mobility disorder: after rupture of the left radial wrist flexor tendon, the patient may show muscle weakness, especially when flexing the wrist joint, there will be no strength. This results in impaired mobility during activities. Rupture of the left flexor carpi radialis tendon can be treated with surgery under the supervision of a doctor. After surgery, appropriate functional exercises can be performed to maintain joint function. After rupture of the left radial flexor tendon, you should go to the hospital in time for treatment.