Objective To introduce the reduction concept of anteromedial cortical support in the treatment of intertrochanteric fracture, summarize the history, characteristics, biomechanics, and clinical applications, discuss the unsolved problems and prospect the future directions.Methods Relevant domestic and foreign studies on cortical support reduction of intertrochanteric fracture in recent years were reviewed. Conclusions were drawn combined with clinical experience.Results The positive cortical supportive reduction of intertrochanteric fracture, as a stable non-anatomical fracture reduction technique, has dual effects on mechanical buttress and biological bone healing. It does not increase the difficulty of doctors’ surgical procedure. For patients, it decreases the loss of femoral neck length, the loss of neck-shaft angle, the incidence rate of coxa vara, and maintains stable mechanical structure of the pelvis. It also shows a lower rate of instrument-related complications, and higher limb function scores. The mechanical stability of medial cortex apposition is more important than that of anterior cortex. For the best stability of the fracture, both sides should get positive support reduction pattern.Conclusion Anteromedial cortical support reduction can improve the postoperative stability of intertrochanteric fracture, enable better imaging and functional prognosis. As a kind of non-anatomic form of functional reduction, it can be used as a suboptimal choice secondary to anatomic reduction.

Citation： WEI Zhen, CHEN Shiyi, ZHANG Shimin. Research progress on anteromedial cortical positive support reduction in treatment of intertrochanteric fracture. Chinese Journal of Reparative and Reconstructive Surgery, 2019, 33(10): 1216-1222. doi: 10.7507/1002-1892.201904154 Copy