Abstract:

BACKGROUND: There has been no clear conclusion about the better selection of materials with good biocompatibility between stainless steel and titanium alloy dynamic hip screw for the treatment of intertrochanteric fracture of the femur.
OBJECTIVE: To compare the biocompatibility between stainless steel and titanium alloy dynamic hip screw implantation in the treatment of intertrochanteric fracture of femur.
METHODS: A total of 86 patients with femoral intertrochanteric fracture were selected from July 2003 to October 2009, and treated with stainless steel dynamic hip screw (n=43) and titanium alloy dynamic hip screw (n=43). Two groups were matched in terms of gender, age, cause of injury, and fracture type. 00Cr18Ni14Mo3 stainless steel was used in stainless steel dynamic hip screw group and Ti6A14V titanium alloy in the titanium alloy dynamic hip screw group. Differences in postoperative complications and recovery of hip joint function were compared between two groups, and soft tissue inflammatory reaction, hyperplasia and fibrous capsule wall surrounding the implants were observed.
RESULTS AND CONCLUSION: There were no significant differences between two groups in the postoperative complications and recovery of hip joint function, but the stainless steel dynamic hip screw group was worse than the titanium alloy dynamic hip screw group in the soft tissue inflammatory reaction, hyperplasia and fibrous capsule wall surrounding the implants when removing the screws (P < 0.01). Results indicated that biocompatibility of titanium alloy dynamic hip screw was better than the stainless steel dynamic hip screw and can be used as a permanent implant material.