RESUMEN
BACKGROUND:There are many ways for surgical treatment of distal radius fractures. Both volar locking plates and Kirschner wires are common methods. Doctors have considerable flexibility in the choice of the ways of fixation, but both at home and abroad there is no comparison between the effects of the two operations for treating distal radius fractures. OBJECTIVE:To systematicaly review the differences in effectiveness and safety of volar locking plates versusKirschner wires for distal radial fracture. METHODS:Databases such as CBM, CNKI, VIP, PubMed and Cochrane Library were electronicaly searched.Chinese Journal of Orthopaedics,Chinese Journal of Orthopaedic Trauma,Chinese Journal of Trauma andJournal of Practical Orthopaedics were searched by hand. In strict accordance with inclusion and exclusion criteria, articles were screened. Methodological quality of included studies was evaluated according to Cochrane Handbook. Data were extracted, and then analyzed with RevMan 5.2 software. RESULTS AND CONCLUSION:Nine randomized controled trials were included. Meta-analysis results demonstrated that upper limb function scores were better in the volar locking plate group than in the Kirschner wire group [MD=-4.55(-7.89,-1.21),P=0.008] at 3 months of folow-up and [MD=-3.13(-6.08,-0.18),P=0.004] at 12 months. The incidence of infection was lower in the volar locking plate group than in the Kirschner wire group [OR= 0.42(0.23, 0.79),P=0.007]. No significant difference in incidence of complex regional pain syndrome [OR=0.28(0.05, 1.38),P=0.12], incidence of carpal tunnel syndrome [OR=0.75(0.20, 2.76),P=0.66] and tendon injury [OR= 1.66(0.51, 5.41),P=0.64] was detected between the volar locking plate group and Kirschner wire group. These results indicated that compared with the Kirschner wire, volar locking plate fixation for the repair of distal radial fracture is safe and effective. In the permission of economic circumstances, it is suggested that elder osteoporosis patients with distal radial fracture should receive plate fixation.
RESUMEN
BACKGROUND:Studies have shown that 26RFa plays an important regulatory role in bone formation, pain, endocrine, cardiovascular disease and energy metabolism. OBJECTIVE:To observe the effects of 26RFa on the proliferation and differentiation of human bone marrow mesenchymal stem cells. METHODS:In order to obtain the most efficient concentration of 26RFa, human bone marrow mesenchymal stem cells were detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide analysis. cells were inoculated into 6-wel plates and then divided into two groups:experimental group treated with 10-11 mol/L 26RFa and control group with no 26RFa. After 8, 12 and 16 days of osteogenic induction, alkaline phosphatase activities in induced cells were detected using alkaline phosphatase kit. After 21 and 28 days of osteogenic induction, alizarin red staining and Von Kossa staining were performed. The number of calcified nodules over each coverslip was calculated, and the expression of cbfa1 protein was detected by western blot assay. RESULTS AND CONCLUSION:After 8, 12, and 16 days of osteogenic induction, the alkaline phosphatase activities were higher in the experimental group than the control group (P<0.05, P<0.01, P<0.05). After 21 and 28 days of osteogenic induction, alizarin red staining and Von Kossa staining showed that the number of calcified nodules was higher in the experimental group than the control group, and the expression of cbfa1 protein was also higher in the experimental group (P<0.05). These findings indicate that 26RFa can promote the osteogenic differentiation of human bone marrow mesenchymal stem cells under appropriate culture conditions.