The mechanical axis of the limb was corrected to the centre of the knee by observing CAS displays. 2 The patella was reduced and the degree of fixed flexion deformity (FFD) or hyperextension was recorded in maximum extension. If required for accurate navigation registration, release of the deep band of the medial collateral ligament was limited to 5 mm by sharp dissection in order to maintain the state of medial soft tissues as close to the preoperative state as possible similar to the methods of Bellemans et al. The anterior horn of the medial meniscus was left intact. Osteophytes were left in situ to assess the knee as close to its pathological OA state as possible. The ACL and PCL were left intact during laxity measurements. The status of the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) was recorded. All landmarks were identified and registered in the navigation system for calculation of the mechanical axes of the femur, tibia, lower limb and generation of an individualized 3D model of the patient’s anatomy using computer navigation software (BrainLab, Munich, Germany). Femoral and tibial navigation pins were inserted. All subjects Allied Health Cardiology & Cardiovascular Medicine Dentistry Emergency Medicine & Critical Care Endocrinology & Metabolism Environmental Science General Medicine Geriatrics Infectious Diseases Medico-legal Neurology Nursing Nutrition Obstetrics & Gynecology Oncology Orthopaedics & Sports Medicine Otolaryngology Palliative Medicine & Chronic Care Pediatrics Pharmacology & Toxicology Psychiatry & Psychology Public Health Pulmonary & Respiratory Medicine Radiology Research Methods & Evaluation Rheumatology Surgery Tropical Medicine Veterinary Medicine Cell Biology Clinical Biochemistry Environmental Science Life Sciences Neuroscience Pharmacology & Toxicology Biomedical Engineering Engineering & Computing Environmental Engineering Materials Science Anthropology & Archaeology Communication & Media Studies Criminology & Criminal Justice Cultural Studies Economics & Development Education Environmental Studies Ethnic Studies Family Studies Gender Studies Geography Gerontology & Aging Group Studies History Information Science Interpersonal Violence Language & Linguistics Law Management & Organization Studies Marketing & Hospitality Music Peace Studies & Conflict Resolution Philosophy Politics & International Relations Psychoanalysis Psychology & Counseling Public Administration Regional Studies Religion Research Methods & Evaluation Science & Society Studies Social Work & Social Policy Sociology Special Education Urban Studies & Planning BROWSE JOURNALSĪ medial para-patellar approach to the knee was undertaken.
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