Dynamic hip screw combined with trochanter stabilizing plate versus Gamma nail fixation in repair of intertrochanteric fracture

Zhou Qiang; Lu Hua; Yu Si-ming; Wang Zhan-chao; Mao Yu-lun; Yao Bing; Zhang Tian-hao

doi:10.3969/j.issn.2095-4344.2014.09.022

Abstract：BACKGROUND:Intertrochanteric fracture can obtain good curative effects after active effective internal fixation in early stage. <br> OBJECTIVE:To compare dynamic hip screw+trochanter stabilizing plate and Gamma nail fixation for treatment of Evans type IIIB and type IV intertrochanteric fracture. <br> METHODS:A total of 67 patients with Evans type IIIB and type IV intertrochanteric fracture, including 28 cases undergoing dynamic hip screw+trochanter stabilizing plate and 39 cases undergoing Gamma nail, were selected from Chongming Branch, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from February 2009 to November 2012. Al patients received antibiotics and functional exercises after treatment. Time of therapy, intraoperative bleeding amount, fracture healing time and Harris Hip Score were retrospectively analyzed in patients of both groups. <br> RESULTS AND CONCLUSION:Al patients were fol owed up for 6-45 months, averagely 21 months. (1) One patient affected infection in the dynamic hip screw+trochanter stabilizing plate group. He was healed after fixation removal half a year after drug exchange. One obese patient experienced injury again during out-of-bed activity at 3 weeks after treatment in the Gamma nail group. Fracture appeared at distal end of lock pin, and healed after replaced by Gamma nail. Trochanteric stabilizing plate was unstable in four patients of the Gamma nail group. They affected severe pneumonia after over 6 weeks of lying in bed, and healed after treatment in the medical department (2) Coxa vara appeared in two cases of the dynamic hip screw+trochanter stabilizing plate group, and three cases in the Gamma nail group. Fracture healing was achieved in al patients. (3) The time of therapy was longer, and intraoperative bleeding amount was significantly more in the dynamic hip screw+trochanter stabilizing plate group compared with the Gamma nail group (P<0.05). No significant difference in healing time and Harris Hip Score was detected between the two groups (P>0.05). Dynamic hip screw+trochanter stabilizing plate and Gamma nail are effective methods for treatment of Evans type IIIB and type IV intertrochanteric fracture. To choose a suitable fixator, we should aggregately analyze fracture stability, healing state and the degree of osteoporosis.