Medial Enhancement Technique for the Treatment of Old Femoral Neck Fractures

Inclusion Criteria: 1. Age \>= 18 years, gender not specified; 2. Patients with femoral neck fractures who have not undergone surgery for more than 3 weeks, or patients with persistent non-union following internal fixation of femoral neck fractures; 3. Have indications for internal fixation surgery for femoral neck fractures and are able to tolerate the surgery; 4. Participants or their legal representatives are informed about the nature of this study and agree to participate. Exclusion Criteria: 1. Participants who have not reached the primary endpoint of other drug, biological agent, or medical device clinical trials prior to enrollment; 2. Known history of hypersensitivity to one or more implanted materials by the patient; 3. Judged by the investigator as physically frail or unable to tolerate surgery due to other systemic diseases; 4. Active infectious foci in the hip joint or other parts of the body, as judged by the investigator; 5. Diagnosed with metabolic bone disease, radiation-induced bone disease, etc.; 6. Severe hip contracture deformity or severe muscle weakness that has been immobilized in functional position for a long time and painless; 7. Suffering from inflammatory arthritis, such as rheumatoid arthritis, systemic lupus erythematosus arthritis, ankylosing spondylitis, etc.; 8. Patients who lack the mental capacity or understanding to meet the requirements of participating in the study, or are difficult to cooperate with; 9. Other situations where the investigator deems the participant unsuitable for inclusion.