Extension means 'straightening'.

When the knee is straight it is said to be extended. A normal range of motion at the knee includes flexion, extension and a small amount of hyperextension.

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Assisted passive extensions

Exercise to increase range of movement.

Short arc extensions

This is a quads exercise, for early rehabilitation, but after you are confident with static quads (quads sets/quads isometric exercises).

By supporting the thigh the

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