Fig. 1From: Prediction of gap balancing based on 2-D radiography in total knee arthroplasty for knee osteoarthritis patientsCriteria for inclusion and exclusion. Non-OA: rheumatic, post-traumatic or neoplasm diseases; Non-standard X-ray: significant rotation seen on anteroposterior view; Semi/total constraint implant: condylar constraint (CCK) or hinged implantBack to article page