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The options for treatment of the young active patient with isolated symptomatic osteoarthritis ofthe medial compartment and pre-existing deficiency of the anterior cruciate ligament arelimited. The indications for the unicompartimental knee prosthesis are selective. Misalignmentfemoral-tibia, varo-valgus angle more than 7°, over-weight, and knee instability wereconsidered to be a contraindication.The potential longevity of the implant and levels of activity of the patient may preclude totalknee replacement, and tibial osteotomy and unicompartmental knee arthroplasty are unreliablebecause of the ligamentous instability.Therefore, we combined reconstruction of the anterior cruciate ligament first andunicompartmental arthroplasty of the knee.We included in this study six patients, three males and three female, mean age 53.6 years, thatpresented only osteoarthritis of medial femoral condyle and ACL deficiency.In the first group included 2 patients, we performed arthroscopy ACL reconstruction withhamstring and unicompartimental knee prosthesis one-step, and in the second group included 4patients, we performed the same surgical procedure in two-step.The clinical and radiological data at a minimum of 1.5 years at follow-up. We evaluated allpatients with KOOS score, and IKDC score.At the last follow-up, no patient had radiological evidence of component loosening, noinfection, no knee remainder instability. The subjective and objective outcome assessed with thescale documented satisfactory average results, both in patients of first group and in those ofsecond group.ACL deficiency induced knee osteoarthritis for incorrect knee biomechanics, and all patientscould be submit a total knee replacement.What method for preventing it? This combined surgical treatment seems to be a viabletreatment option for young active patients with symptomatic arthritis of the medialcompartment, in whom the anterior cruciate ligament has been ruptured.Future developments and more data are necessary for standardised surgical approach.Saturday, October 9, 2010, 14:00-14:40Session A21: Knee ArthroplastyPatellar Tracking Utilizing Two Different Implant Designs for Total KneeArthroplasty*Raman Thakur - William Harvey Hospital - Ashford, UKJose Rodriguez - Lenox Hill Hospital - New York, USA*Email: doc_thakur@hotmail.comfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]