Postoperative Chronic Pain

The goal of this observational study is to learn about the incidence and risk factors of postoperative chronic pain in adult patients who have undergone Hallux Valgus surgery (between january 2021 and december 2024). This will be assesed through scales and medical records information. The main questions to be answered are: * How many patients who have undergone Hallux Valgus surgery are experiencing postoperative chronic pain. * What factors are there present in those who do experience chronic pain after surgery. After accepting the informed consent, participants will be asked to answer a Brief Pain Inventory Scale and a Risk Factor Questionnaire for Postoperative Chronic Pain.

The objective of this study is to assess the incidence of chronic postoperative pain in pediatric patients aged 8 to 17 years following surgical procedures. Furthermore, it seeks to identify potential risk factors contributing to the development of such pain and to evaluate its long-term implications.

This study is a further observation and follow-up of the patients enrolled in the registration number ChiCTR230007164430 to further evaluate the effect of long-term infusion of esketamine and lidocaine on postoperative chronic pain, long-term quality of life and survival rate in patients undergoing hepatectomy.