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Definition of various angles, distances and lengths on the Merchant views and weight bearing full leg standing view. (A) Patellar tilt angle, (B) congruence angle, (C) patella lateral subluxation distance, (D) lateral patellofemoral angle, (E) lateral patellar displacement, (F) femoral offset, (G) TW: thigh width, FL: femoral length, CW: calf width, TL: tibial length.
