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Transplanted lateral meniscal allografts often located more anteriorly on the sagittal plane
Compared with normal lateral menisci, transplanted lateral meniscal allografts were located more anteriorly on the sagittal plane, and a more anterior allograft placement correlated with a greater degree of graft extrusion on the coronal plane, according to study results.
Researchers assessed graft extrusion and sagittal graft position parameters among 99 patients who underwent lateral meniscus allograft transplantation (LMAT) for knees that had undergone total meniscectomy, as well as for 50 sex- and age-matched control patients who underwent MRI for evaluation of knee pain and had no intra-articular lesions.
Parameters included the distance from the articular cartilage center to the anterior meniscus (CAMD), the distance from the articular cartilage center to the posterior meniscus, the distance from the anterior articular cartilage margin (ACMD) to the anterior horn or the distance from the posterior articular cartilage margin to the posterior horn. The researchers analyzed correlations between graft extrusion and MRI parameters in the LMAT group and performed multiple linear regression analysis to identify predictors of graft extrusion.
Seong-Il Bin
Results showed the LMAT group had significantly greater mean CAMD and mean ACMD vs. the control group. The researchers also found the LMAT group had a significantly smaller mean distance from the articular cartilage center to the posterior meniscus and from the posterior articular cartilage margin to the posterior horn.
According to the researchers, CAMD and ACMD correlated with relative extrusion and CAMD correlated with absolute extrusion, with CAMD being the only predictor independently associated with absolute and relative extrusion. – by Casey Tingle
Disclosure: The researchers report no relevant financial disclosures.