Study for Union of Lumber Posterior-Lateral Funsion(PLF). Especially as to Radiographic Finding and QCT.:Especially as to Radiographic Finding and QCT

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The association between aging factor and auto graft bone remodeling was studied in 48 cases who had been operated for lumber radiculopathy or canal stenosis. PLF was carried out for all cases. We made 4 indexes as follows:1) end-time when resorption for graft bone stopped.2) radiodensity peak-time of graft bone.3) iso-radiodensity time between graft bone and neighbouring bone tissue.4) the time when range of movement decreased to below 3 or 2 degrees at PLF level.Our study indicated that resorption of graft bone ended within 6-8 months after operation, iso-radiodensity time for graft bone was gradually lengthened as aging or bone density mass decreased, and bone union was also delayed.
西日本整形・災害外科学会の論文