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Fig. 3 | BMC Veterinary Research

Fig. 3

From: Biomechanical analysis of canine medial patellar luxation with femoral varus deformity using a computer model

Fig. 3

The reaction force (rcforce) of the x-axis between patella and the femoral trochlear groove in the quadriceps-loading simulations. The Rcforce value reaches ‘0’ and decreases to a negative value when the aLDFA is equal to and greater than 103°, respectively, and medial patella luxation occurs when the aLDFA is equal to and greater than 103°. Models corresponding to aLDFAs of 95° (a), 98° (b), 100° (c), 101° (d), 102° (e), 103° (f), 104° (g), 105° (h), 106° (i), 107° (j), 108° (k), 109° (l), and 110° (m), and the rcforce units are kilonewtons (1 kN = 1000 N). The red arrow indicates when the rcforce is zero

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