Aim The current research aims at designing a biomechanical model for calculating muscular tension angles for muscle working on elbow flexion. Methods Approach The researchers used the experimental approach. Recommendations 1. Using the recommended biomechanical model for analyzing muscular work and calculating tension angles of muscles working during elbow flexion 2. Using the recommended biomechanical model to estimate force amounts during elbow flexion. 3. Using the recommended biomechanical model as an aid to demonstrate the anatomy of muscles working on elbow flexion 4. Designing other models for various body joints to be used in motor analysis.