Polydactyly is one of the most common congenital deformities of the hand. We have focused on answering the topical questions of concern to parents in the hope that they will be helpful: 1. Is it necessary to remove the polydactyly first and then correct it in a second operation? A: Most of the polydactyly excision and correction can be done in one operation. Due to the complexity of the polydactyly and its various manifestations, very few children will have some minor adjustments when their bones are mature. 2.How can I correct the deformity after removal of polydactyly? Can the deformed fingers be corrected with splints? The surgery of polydactyly should take into account the characteristics of the deformity and make a careful design, paying special attention to the joint position of the main finger, the correction of the direction of the metacarpal head, the balance of tendon strength, and the reconstruction of the attachment point of the thumb muscles. Postoperative brace splinting will help to correct the position of the joint. 3.Why may deformities still occur after surgical removal of polydactyly (toe)? What deformities may occur? Incomplete surgical design, unbalanced development of the preserved finger, and incorrect application of postoperative external fixation can lead to postoperative deformities. The most common deformities are joint distortion, longitudinal nail ridge formation, poor finger contour, and developmental delay. 4.When can I have a second surgery if my finger is still deformed after surgical excision? For poor nail shape due to splicing surgery, reshaping can be done when the bones are mature (16 weeks old); for joint instability due to imbalance of tendon strength, joint capsule shaping or interphalangeal joint fusion can be chosen again 1 year after surgery; for poor finger contour, contour shaping or fatty fascial flap filling can be done 1 year after surgery; for developmental delay, finger bone lengthening can be done after school age. 5.Why is it necessary to fix the joint externally with a plaster cast despite the internal fixation with a Kirschner pin during surgery? Clinique pins are used to maintain joint stability and allow the tendon ligaments to heal well. However, the early prevention of contracture of the tiger’s mouth and the maintenance of the palmar position still need to be achieved by external fixation. 6.What is the effect on the movement of the fingers (toes) when fixation is carried out with Kirschner pins? What do I need to pay attention to? When fixation is performed with a Kirschner pin, the extension and flexion movements of the fingers (toes) involved in the joint will be temporarily lost, so parents should not be afraid. It should be noted that the end of the nail should not be contaminated with dirt, and should not be inserted again if it is accidentally pulled out, so as not to cause retrograde infection. 7.When can I pull out the pins for children with finger deformities corrected by internal fixation with kyphoscopic pins? You can pull out the Kirschner pin 4-6 weeks after surgery. 8.When can the child start to move the fingers (toes) after the stitches are removed after the surgery? Will the fingers (toes) be less flexible than those of ordinary people? Generally, you can move your fingers (toes) 1 week after the stitches are removed (3 weeks after surgery); if the stitches are fixed, you can start moving your fingers (toes) after the stitches are removed. The recovery of finger (toe) flexibility and other functions depends on the severity of the deformity and the surgical technique, and most children recover well through delicate and comprehensive surgery. 9.Will the deformity of the finger occur again after correction? Generally speaking, no. However, infection, osteotomy angle, and the use of a new finger will not occur. However, if infection occurs, if the angle and position of the osteotomy are inappropriate, or if the primary and secondary fingers are very different and must be spliced together, deformities will often occur.