Fig. 9 | Scientific Reports

Fig. 9

From: A biomechanical investigation comparing a novel bone cement bridging screw system with conventional treatment methods for Kummell’s disease

Fig. 9

Angle calculation equation of the optical motion capture system. (A) Schematic diagram illustrating the calculation of angles (θ, φ, and ψ) of range of motion; (B) the transformation matrix between coordinate systems; (C) coordinates of the vectors after completion of loading; (D) angle γ of range of motion after loading and before loading).

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