Tag Archives: Interactive Biology

Concentric Finger Flexion Against Resistance

In this video, the motion of finger flexion is occurring at the metacarpophalangeal (MCP) and interphalangeal (IP) joints while squeezing the ball. This motion is controlled by concentric muscle contraction against the resistance from the ball. Concentric metacarpophalangeal (MCP) and interphalangeal (IP) joint flexion is demonstrated from a position of 90⁰ of elbow flexion as seen from a front or anterior view.

Eccentric Finger Extension With Resistance

In this video, the motion of finger extension is occurring at the metacarpophalangeal (MCP) and interphalangeal (IP) joints. This motion is controlled by eccentric muscle contraction against the resistance from an elastic band. Eccentric metacarpophalangeal and interphalangeal joint extension is demonstrated from a fully flexed hand position as seen from a front or anterior view.

Finger Flexion

In this video, the motion of finger flexion is occurring at the metacarpophalangeal (MCP) and interphalangeal (IP) joints. This motion is controlled by concentric muscle contraction. Concentric metacarpophalangeal (MCP) and interphalangeal (IP) joint flexion is demonstrated starting with the arm at the side of the body and the palm facing forward in the anatomical position for the upper extremity and ending in a fully flexed position as seen from a side or lateral view.

Finger Intrinsic Plus

In this video, the motion of the fingers beings at the extrinsic plus position with metacarpophalangeal (MCP) joint extension and interphalangeal (IP) joint flexion. The motion ends in the intrinsic plus position with metacarpophalangeal (MCP) joint flexion and interphalangeal (IP) joint extension as seen from a side or lateral view.

Finger Adduction

In this video, the motion of bringing the fingers together is adduction. Adduction is occurring at the metacarpophalangeal joints. Metacarpophalangeal adduction is demonstrated from a position of the fingers being spread apart to a position of full adduction as seen from a front or anterior view.