Ultrasound-guided hydrodissection/block

Under ultrasound guidance, the femoral nerve and its surrounding fascial space are located, usually accessed with a fine needle through a safe window. Typically, an appropriate amount of crystalloid fluid is injected, and if necessary, a small amount of local anesthetic or corticosteroid may be added to separate adhesions, expand the space, and reduce traction and compression. The procedure is performed under sterile conditions with real-time monitoring of echoes and sensory responses. Postoperative short-term observation is conducted to assess pain and activity changes, and home care and follow-up plans are provided. The above is general health information, not medical advice; specific details are subject to specialist evaluation and hospital protocols.