Treatment: 1, local immobilization, intrathecal injection of prednisolone acetate. Prednisolone injection is definitely accurate, but subcutaneous injection is ineffective. Once injected into the superficial branch of radial artery, there will be spasm or embolism of the radial third finger blood vessel, which will lead to fingertip necrosis. Generally, more experienced teachers in orthopedics do it.

2. If the non-surgical treatment is ineffective, you can consider performing stenosing tendon sheath resection.