Inclusion: Varus deformity between 0 - 20°, Isolated medial arthrosis ≥ level 2 (K&L) OR a congenital deformity OR chondromalacia ≥ level 2 (ICRS), Lateral cartilaginous tissue damage ≤ level 1(K&L), Intact lateral meniscus, Age ≥ 18 years, Range of Motion at least 0° - 0° - 130°, Patella/ sliding plane without signifikant signs of arthrosis, Stable joint OR possibility of intraoperative balancing of the tendon tension;

Exclusion: Clinically relevant disorders of bone metabolism, Aktive infection, Adipositas (BMI ≥ 35), Rheumatoid arthritis, Osteomyelitis in the tibia, No availibility for follow-up examinations

Read more: http://www.clinicaltrials.gov/ct2/show/NCT00889304?cond=%22Arthritis%22&lup_s=07/14/2011&lup_d=30