Objective To investigate the influence of the integration of fracture treatment and exercise rehabilitation on the effectiveness in the patients with intertrochanteric fracture of femur. Methods Between January 2007 and December 2009, 3 873 patients with intertrochanteric fracture of femur were surgically treated in 56 hospitals. Of them, 1 970 cases were treated with rehabilitation training according to scale of safety assessment of early exercise rehabilitation of patients with fractures (trial group), 1 903 cases were treated with traditional rehabilitation training methods (control group). There was no significant difference in age, gender, fracture type, internal fixation type, or postoperative safety score between 2 groups (P gt; 0.05). Results All the patients were followed up 13-49 months (mean, 30.5 months). There was no significant difference in the incidences of bone nonunion, delayed union, and systemic complication between 2 groups (P gt; 0.05); significant differences were found in the incidences of incision complication, deep vein thrombosis of the lower extremity, and the overall complication between 2 groups (P lt; 0.05). At 6 and 12 months after operation, the trial group was significantly better than the control group in the recovery of hip motion, curative effectiveness classification, and the excellent and good rate (P lt; 0.05). Conclusion The treatment of intertrochanteric fracture of the femur guided by the integration of fracture treatment and exercise rehabilitation can apparently improve the prognosis and reduce the incidence of complications.
Based on the CT data and the structure characteristics of the femoral fractures during different healing stages, medical FE models of fractured femur treated with locking compression plate (LCP)were built.Under the physiological load of a standard body weight (70 kg) and the constraint condition,the stress distributions of LCP and fractured femur during healing were calculated by means of three-dimensional finite element analysis (3D-FEA).The results showed that the stress distribution in the LCP and the fractured femur was similar,during the initial stage which there was no newly formed bone or soft tissue in fracture site.The maximum von Mises stress (371.23,272.76 MPa) in the fractured femur was much higher than that in natural femur,and the intensive stress was concentrated mainly in the proximal area of the fractured femur.With the growth of bony callus bone in fracture site,the intensity of stress in proximal femur decreased.Contrasted to the two cases mentioned above,the value of the maximum von Mises stress (68.17 MPa) in bony callus bone stage decreased significantly,and was lower than the safe strength of natural bone.Therefore,appropriate training which is benefitial for the growth to new bone could be arranged for the better rehabilitation.