Comparative Study Of Two Non-absorbable Tendon Suture And Two Tendon Repair Techniques

Objective:1To compare the biomechanical properties and tissue compatibility of twocommonly used non-absorption suture, providing a theoretical basis forselecting appropriate sutures in tendon repair surgery.2To compare the biomechanical properties of two tendon repair techniques,providing a theoretical basis for selecting the appropriate repair method fortendon repair surgery.Methods:1The1003-0TICRON polyester sutures and1003-0silk sutures weredivided into two groups: gropA1,3-0TICRON polyester suture; grop B1:3-0silk suture. Eighty sutures in each group were randomly buried insubcutaneous abdominal tissue of40SD rats. The inflammatory reaction ofthe tissue near the sutures was observed via HE staining at1,2,3,4weekafter operation in order to compare the initial and subsequent four timepointstensile strength. The date were analyzed statistically.2Thirty complete removed tendons were collected and allocated into twogroups. All of the tendons were cut off in the middle point. In group A2, thetendon was repaired by ZM suture technique; in group B2, the tendon wasrepaired by modified Kessler suture technique. In order to do biomechanicstest after suture, A series of results were recorded, including2mm-gapformation force, maximam load,maximum gap, record fracture mode andcalculate the rigidity of tendon repair. The date were statistically analyzed.Results:1The inflammatory reaction was obvious around the suture at one and twoweek after operation and gradually reduced at three and four weeks afteroperation. The inflammatory reaction of3-0polyester sutures group was more serious than3-0silk sutures group, and the inflammatory reactioneased slowly.2The initial tensile strength of3-0polyester sutures(19.02±0.63N)and thetensile strength at four weeks after operation(17.80±0.64N)were greater thanthe initial tensile strength of3-0silk sutures(15.40±0.44N)and the tensilestrength when suture was in the body at four weeks(9.79±0.54N)afteroperation. The3-0TICRON polyester suture tension strength attenuation ratewas obviously less than3-0silk suture.3The2mm-gap formation force(46.13+1.57N), failure load(57.18+1.84N)and stiffness(8.45+0.34N/mm) of group A2were greater than the2mm-gapformation force(15.02+0.67N), failure load(28.63±1.95N) and stiffness(2.47±0.22N/mm)of group B2. The maximum gap(6.77+0.29mm) ofgroup A2was less than group B2(11.62+0.94mm). The suture out rate (0) ofgroup A2is less than group B2(100%).Conclusion:13-0TICRON polyester suture has good histocompatibility and mild localinflammatory reaction. Its tensile strength could maintain for a long timewithout repair failure. Therefore,3-0TICRON polyester suture is a idealmaterials for the repair of tendon rupture.2ZM suture technique has good grasping effect and tensile strength, and itcan meet the demand of functional exercise without resistance in the earlypostoperation period a flexor tendon repair.