Tenodesis grasp is described by which of the following statements?

Tenodesis grasp is described by which of the following statements?

• A. It uses finger flexion when the wrist is flexed
• B. It uses finger extension when the wrist is extended
• C. It uses finger flexion when the wrist is extended
• D. It uses finger extension when the wrist is flexed

Answer: (C)

Tenodesis grasp relies on the passive properties of the finger flexors that cross the wrist. When the wrist is extended, these flexor tendons are stretched and their elastic tension pulls the fingers into flexion, allowing a grasp without requiring active finger flexor contraction. This mechanism is especially useful for individuals with limited finger strength, such as after certain spinal cord injuries. Conversely, bending the wrist tends to release the grip because the flexor tendons slacken and the fingers can extend. So the description that matches tenodesis grasp is finger flexion when the wrist is extended.

Tenodesis grasp relies on the passive properties of the finger flexors that cross the wrist. When the wrist is extended, these flexor tendons are stretched and their elastic tension pulls the fingers into flexion, allowing a grasp without requiring active finger flexor contraction. This mechanism is especially useful for individuals with limited finger strength, such as after certain spinal cord injuries. Conversely, bending the wrist tends to release the grip because the flexor tendons slacken and the fingers can extend. So the description that matches tenodesis grasp is finger flexion when the wrist is extended.