The foot pronation deformity has a significant impact on the walking and standing functions of patients with cerebral palsy, and the deformity progresses rapidly, making conservative treatment difficult. Therefore, surgery should be performed to correct mild clubfoot deformities in patients with cerebral palsy. The types of surgery are soft tissue surgery, bony surgery or both. If no bony deformity change occurs, soft tissue surgery is used to correct it first. Orthopedic surgery for cerebral palsy clubfoot 1, posterior tibial tendon lengthening The posterior tibial tendon lengthening is most often performed by Z-formation, in which a longitudinal incision is made behind the inner ankle, after revealing the tibia, the forefoot is forcefully dorsalized and turned out, the posterior tibial tendon is stretched, and the posterior tibial tendon is lengthened in a Z-shape, which can be clearly seen during surgery to correct the foot pronation deformity. It can also be used to cut only the tendon part of the tendon at the junction of the tendon muscle belly sliding lengthening surgery. Since most of the inversion feet are combined with horseshoe foot deformity, so with this one incision, the Achilles tendon lengthening can be implemented at the same time. 2, posterior tibial tendon transposition anterior surgery Clinical evidence shows that this surgery is effective in correcting spastic clubfoot deformity. Because it can make the posterior tibial tendon assist dorsiflexion, and remove the power foot inversion muscle force and foot plantarflexion muscle force. This procedure provides excellent results in more than 90% of patients with cerebral palsy, but must be combined with other orthopedic procedures. In cases of combined bony deformity of the foot, the posterior tibialis muscle must be used in conjunction with the correction of the bony deformity, and the stopping point of the tendon should be the same as the stopping point of the third peroneal muscle. Children patients who have light foot entropion, in order to prevent the formation of foot exostosis deformity after muscle displacement, the posterior tibial tendon can be split in half through the tibiofibular interosseous membrane, and the distal end of the short fibular tendon suture. 3, the tibialis anterior tendon splitting external transposition surgery adapted to the tibialis anterior muscle activity or excessive tension caused by the foot inversion deformity. The clinical application of this surgical method is more, and it is found to be appropriate for cases with clinically active anterior tibial tendon gongtai eup and inversion in the gait swing phase. If a clubfoot is present at the same time, Achilles tendon lengthening and posterior tibial tendon lengthening are necessary. Gentle gastrocnemius recession surgery allows the ankle joint to be balanced so that the anterior tibialis becomes solely ankle dorsiflexor. (1) Procedure: The patient is placed in the supine position with a tourniquet to stop bleeding. If combined with Achilles tendon contracture, Achilles tendon lengthening should be performed by making a longitudinal incision on the dorsal edge of the foot on the surface of the first cuneiform bone, identifying the anterior tibial tendon and its stop, splitting it in half, and then making a second longitudinal incision on the anterolateral aspect of the ankle, identifying the anterior tibial tendon, and leading the anterior tibial half from within the first incision into the second incision. The lateral half of the tendon is then disconnected from its distal end, marked, and withdrawn from the second incision, and a first longitudinal incision is then made on the dorsal side of the dice bone to lead the lateral half of the tibialis anterior tendon through the skin into the first incision. The distal end of the tibialis anterior tendon is sutured through the dice bone foramen tunnel tendon itself. In pediatric patients, because the dice bone is too small to be perforated through the tendon strip with fixation, the split anterior tibial tendon is sutured to the short fibularis muscle stop at the fifth metatarsal with excellent results, and this method can be routinely applied instead of the dice bone drilling with fixation technique. Prior to tendon fixation, the tendon should be examined to determine if there is excessive tension in the Achilles tendon. If the Achilles tendon is overstressed, it will create excessive tension in the grafted tendon. In this case, the split anterior tibial tendon should be sutured to the short peroneal tendon before a moderate gastrocnemius tendon membrane cut through another posterior medial incision is performed to retract the hand wood to establish balance in the hindfoot and ankle. (2) postoperative treatment: long leg cast with fixation, 2 weeks later can be weight-bearing with cast. 6 weeks to cast, application of weight-bearing brace, evening with brace with fixation, six months later remove the brace depending on the situation. 4.If the hallux longus flexor or toe longus flexor tendon is obviously spastic, the tendon can be extended. It is recommended to treat spastic clubfoot with dorsal transfer of the mother long flexor tendon and the total toe flexor tendon.