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Anatomy
Anatomy
Elbow / Biceps Range of Motion
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In one line
The biceps brachii (a 2-joint muscle) has a ROM of 135 degrees at the elbow.
Detail
The biceps brachii is a 2-joint muscle with a range of motion of 135 degrees; it performs a stabilizing action at the shoulder joint while the movement itself occurs at the elbow joint. The elbow-joint movement diagram (flexion/extension) is attributed to Harter (1991).
Key facts
- Biceps brachii ROM: 135 degrees.
- Biceps brachii is a 2-joint muscle: stabilizes the shoulder, moves the elbow.
Connections
- biceps-brachii — the muscle.
- carrying-angle — elbow extension and the carrying angle.
- flexion — elbow flexion.
SourceReference manual
p.412p.544
Cited authorities in source: Harter (1991).
Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.
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Atlas Connections
Biceps Brachii
The strongest flexor of the elbow joint (long and short heads); flexes the elbow, supinates the forearm, and weakly flexes the shoulder; a 2-joint muscle (ROM 135°).Carrying Angle of the Elbow
Because the trochlea extends longer than the capitulum, the extended supinated forearm deviates laterally from the humerus — the carrying angle (cubital angle), ~5° in men and 10–15° in women.Extension
Straightening a joint so the bones move apart.Flexion
Bending a joint so the bones come closer together.