Biomechanical effect of meniscal repair and partial meniscectomy on contact mechanics / 实用医学杂志

ABSTRACT

Objective To evaluate the biomechanical effect of horizontal, vertical, and cruciate suture repairs and partial meniscectomy on contact mechanics. Methods Control group (complete meniscus), buckethandletear group and suture repaired group were recorded. The contact map of the control group was firstly recorded; simulated bucket handle medial meniscal tears were then created. Tears were treated with 1 of 3 suture repair techniques or partial meniscectomy. The 24 samples were treated randomly and thus there were 6 samples evaluated for every operation method. Instantaneous contact area (CA), mean contact pressure (MCP), and peak contact pressure (PCP) measurements were recorded with a pressure sensing system. CA, MCP, and PCP for intact stifles (control), stifles with simulated tears, and stifles after treatment were recorded and compared using 1-way repeated measures ANOVA. Results Stifleswithbuckethandletearshadsignificantlydecreased CA, increased MCP and increased PCP when compared with control group. All meniscal repair techniques reestablished normal contact mechanics. When comparing meniscal repair and partial meniscectomy, stifles with partial meniscectomy had lower CA, higher MCP and PCP than stifles undergoing repair (P = 0.851 and 0.987, respectively). Conclusions Contact mechanics obtained from each repair technique were mechanically superior to partial meniscectomy. Performing meniscal repair instead of partial meniscectomy with select meniscal tears may mitigate the development of degenerative joint disease.