Carbon fiber ligament replacement in chronic knee instability

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Sports Medicine

Background:

• Chronic knee instability often requires surgical intervention.
• Traditional treatments involve grafts (autogeneic, allogeneic, xenogeneic) or alloplastic materials.
• Carbon fiber prostheses have been investigated for their potential in knee ligament reconstruction.

Purpose of the Study:

• To evaluate the efficacy and outcomes of using carbon fiber prostheses for treating chronic knee instability.
• To assess the biocompatibility, biomechanical properties, and long-term results of carbon fiber implants in knee surgery.

Main Methods:

• Surgical implantation of carbon fiber bands for ligament reconstruction.
• Fixation techniques involving bone channels or trap doors for secure anchorage.
• Application of resorbable collagen coating and dura/fascia lata envelopes to enhance intra-articular stability.
• Clinical follow-up of patients assessing knee stability, range of motion, and overall satisfaction.

Main Results:

• Carbon fibers exhibit good biocompatibility and allow collagenous fiber ingrowth.
• Anatomical reconstruction of injured ligaments is achievable with carbon fibers.
• Of 64 patients followed for an average of 13.6 months, 60 reported satisfaction.
• 28 patients had stable knees, 30 had minor instability, and six were unstable.
• Range of motion was comparable to the unaffected side in 37 patients.

Conclusions:

• Carbon fiber prostheses provide a durable and effective solution for chronic knee instability.
• The material's properties facilitate anatomical repair and long-term osseous integration.
• The modified surgical technique enhances stability and patient outcomes, with a high satisfaction rate observed.