Hi i am Dr Ahmed Aly thanks for using HealthcareMagic site , I had gone through your question and understand your concerns .. Carpal tunnel release operation means that the nerves passing to your fingers mainly the median nerve was irritated or obstructed during its passage to your fingers through the flexor retinaculum at the level of the wrist . the flexor retinaculum is a kind of sheath that sorrounds some nerves and structures passing through your wrist region so this sheath is cut to free your median nerve . Flexor synovectomy means removal or excision of a peace of the synovium which is a thin layer surrounding your wrist joint that allows flexion . may be it had a minor fissure or fracture that neede to be removed to immobilise your wrist joint . Hope you feel better after your operation and follow your surgeon instructions and you may need physiotherapy sessions with a chiropractor to manage your injured joint to fully recover . Please click and consider a 5 star rating with some positive feedback if the information was helpful. Wish you good health, Any further clarifications feel free to ask.