Methods Thirty three patients with ischemic necrosis of femoral head in ⅱ or ⅲ stage were treated by medullary center decompression and free periosteum implantation under the supervision of arthroscope or transplantation of iliac bone flap with vascular pedicle through joint capsule. 方法对33例Ⅱ期或Ⅲ期的股骨头缺血坏死患者,进行了关节镜下髓心减压入路;
Objective Through studying the effects of muscle spindles on discharges of medullary respiratory neurons, to ascertain whether muscle spindle afferents had the regulating effects on respiratory movement by ways of the respiratory center. 目的观察肌梭传入对延髓呼吸相关神经元自发放电的影响,从呼吸中枢的途径探明肌梭传入是否对呼吸运动具有反射性调节作用。