Investigation of Clinical Outcome of ACL Reconstruction Utilizing Two Tibial Fixation Techniques, Concentric Tapered Interference Screws and Interference Screw and Sheath

Inclusion Criteria:

• Males and females between ages 21 and 40 years.
• Primary ACL tears.
• Signed Informed consent.
• Availability during follow up period.

Exclusion Criteria:

• Additional meniscal injury requiring suture.
• Articular cartilage injury requiring surgical management.
• Concomitant ligament injuries to the same knee requiring surgery.
• Bilateral ACL injury.
• Revision ACL surgery.
• Concurrent fractures of the lower limbs caused by the same accident.

• Post operative wound infection.

  • Post operative nerve injury

• Cardiovascular compromise.
• Professional sports people.
• Soldiers on active military service.
• Patients actively seeking compensation for injury.
• Patients on other research protocols.
• Patients receiving medications which alter bone metabolism: corticosteriods, Calcitonin, Flourides, Biphosphonates, Vitamin D and its derivatives, Cytotoxic drugs.
• Non compliance. • Pregnancy