目的：通过选择性切断脊神经前根和后根观察单纯运动神经或感觉神经损伤对骨代谢影响的病理特征。
Objective: to observe and analyze the effect of selective radicotomy on the bone structural changes by selective anterior rhizotomy and the posterior rhizotomy.
均进行了外科治疗：实施神经根减压术3 9例，感觉根切断11例。
Nerve root decompression was performed in 39 cases, and sensory radiculotomy in 11 cases.
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