Factor analysis of muscular paralysis due to nerve root injury after posterior lumbar interbody fusion (PLIF) / 中国骨伤

ABSTRACT

<p><b>OBJECTIVE</b>To analyze the reasons of muscular paralysis due to nerve root injury after PLIF.</p><p><b>METHODS</b>From January 2001 to January 2012, 1 250 cases underwent PLIF in our hospital, after operation, 29 cases occurred muscular paralysis due to nerve root injury. There were 10 males and 19 females with an average age of 61 years, 12 cases with one-segment, 14 cases with two-segment, 3 cases with three-segment. The clinical data of 29 patients were retrospectively analyzed including PODx (preoperative diagnosis), surgery procedure, postoperative symptoms and so on.</p><p><b>RESULTS</b>The follow-up time was more than 1 year and the longest was 2.5 years with an average of 1 year and 7 months. Twenty-three patients obtained satisfactory results and muscle strength recovered to 4-5 levels,3 patients was poor and final muscle strength recovered to 0-2 levels. Recovering time after operation was directly proportional to the degree of injury,those muscle strength level was more than 2, usually could have significant improvement within 2 weeks.</p><p><b>CONCLUSION</b>More complicated factors result in the reasons of nerve root injury after PLIF. Except those suffered severe grinding contusion and amputation, most of the patients can get satisfactory effect.</p>