It usually takes a week for the thumb to slowly straighten out after having the needle cut. The knife is a traditional Chinese medicine treatment. Repeatedly cutting the connective tissues in the thumb area can effectively loosen the inflammatory tissues and promote the blood circulation of the local soft tissues, which can effectively improve the conditions of tenosynovitis, arthritis and other diseases. Localized wounds often occur during the knife treatment, and wound recovery may take up to a week, it is best to slowly straighten the thumb after a week, to carry out appropriate functional exercises, but also to prevent the occurrence of wound dehiscence. Whether the thumb can be straightened after the small needle knife needs to depend on the postoperative recovery, you can regularly irradiate infrared rays to promote the recovery of local tissues, if there are thumb stiffness, pain and other uncomfortable symptoms, you need to consult a doctor in time for examination.