Division: Mitek Sports Medicine
Category: ACL Reconstruction
The RIGIDFIX ® ACL Cross Pin System is an innovative method for fixing soft tissue or bone-tendon-bone grafts during ACL reconstruction. The pins are available in two sizes; 3.3mm for soft tissue grafts and 2.7mm for BTB grafts. The unique, patented RIGIDFIX Cross Pin System was developed to:
|RIGIDFIX Curve Surgical Technique for an Anatomical Approach|
Femoral and tibial fixation of autograft or allograft ACL soft tissue (semitendinosus and gracilis) and bone-tendon-bone grafts.
|Strong, rigid fixation||Rigidfix 3.3mm cross pins for soft tissue grafts demonstrated 642N of pull-out strength and 1.4mm of elongation after cyclic loading. The 2.7mm BTB cross pins had 424N of pull-out strength providing a secure, strong reconstruction.1|
|Close to aperture fixation||Minimizes intratunnel graft micromotion and the “bungee” effect.|
|360 degrees of graft to bone contact||No device interference between graft and bone and pins provide additional compression of graft to promote biologic in-growth.|
|Ease-of-Use||The system is intuitive and the simple technique helps to expedite surgery time and is easily reproducible.|
|Bioabsorbable material. ß-TCP/PLLA composite.||RIGIDFIX crosspins are available in a ß-TCP/PLLA composite –Mitek’s proprietary BIOCRYL material. BIOCRYL is molded using a proprietary process called Microparticle Dispersion to ensure a uniform mixture of ß-TCP and PLLA throughout the implant. ß-TCP is a well known osteoconductive bioceramic often used in bone-void filling applications. Previously published imaging studies using ß-TCP/polymeric ACL fixation devices have demonstrated various levels of ossification, and in some cases complete ossification at the implant site.2|
1 RIGIDFIX® Technical Support Data. DePuy Mitek. P/N#900395. Feb. 2000
2 Strength of RIGIDFIX® Cross -Pins Composed of ß-TCP/PLLA (BIOCRYL®) Composite Material DePuy Mitek Research and Development, December 4, 2009.