The Assessment of the Use of Anti-Adhesion Agents to Prevent Pelvic Postoperative Adhesions

Inclusion Criteria: * Patients who are premenopausal. * Patients who are scheduled for pelvic surgery including myomectomy, pelvic adhenolysis, endometriosis surgery, salpingostomy, dermoid cyst removal, ovarian cystectomy or any pelvic surgery other than total metrectomy. * Patients who are 20 years old or older. * Patients who are able to understand the objectives, sign the informed consent form, and willing to comply with study procedures. Exclusion Criteria: * Patients who are 65 years old or older. * Presence of uncontrolled diabetes, coagulative disorders, severe urinary system infection, or other severe diseases. * Presence of malignant tumor or diagnosed with cancer. * Any physical or psychological illness or symptom which is considered unsuitable to enroll by physicians. * Patients who are unwilling to comply with study procedures. * Patients who are known to have hypersensitivity to hyaluronic acid implants.