Objective: To summarize the general concept of lateral wall, the causes of lateral wall injury, and surgical strategies in order to improve the understanding of lateral wall and reduce the complications of operation.
Methods: The related literature on lateral wall was extensively reviewed, summarized, and analyzed.
Results: The superior extent of the lateral wall is vastus lateralis ridge and the inferior extent is the intersection between the lateral femoral cortex and a line drawn at a tangent to the inferior femoral neck. The integrity of the lateral wall is important to prevent the failure of fixation and reoperation of intertrochanteric fractures. The main causes of injury are that there is no suitable typing criteria as a guide, the fracture pattern shown by X-ray does not match with the actual situation of the fracture, the type of fracture is special, and the operation is improper. The main treatment is to reconstruct the lateral wall and choose different reconstruction methods according to different fracture patterns.
Conclusion: The lateral wall is very important for the treatment of intertrochanteric fracture. Lateral wall fracture should be internal fixation in order to minimize the risk of reoperation.
目的: 总结股骨粗隆外侧壁的一般概念、外侧壁损伤的原因及治疗进展，以期提高对外侧壁的认识，减少手术并发症的发生。.
方法: 查阅国内外股骨粗隆外侧壁的相关文献，并进行分析总结。.
结果: 外侧壁的上界是股骨外侧肌嵴，下界是股外侧皮质与下股骨颈切线的交点。外侧壁的完整性对于防止股骨粗隆间骨折的固定失败和再手术非常重要。损伤原因主要是无合适的分型标准作为指导、X 线片显示的骨折模式与骨折实际情况不符、骨折类型特殊、术中操作不当等。治疗方法主要是重建外侧壁，根据不同骨折模式选择不同的重建方法。.
结论: 外侧壁对于股骨粗隆间骨折的治疗至关重要，外侧壁破裂应一期固定，最大限度减少再手术风险。.
Keywords: Intertrochanteric fracture; fracture fixation; lateral wall.