What is the functional position of the wrist during optimal hand function?

The functional position of the wrist during optimal hand function is characterized by a slight extension and ulnar deviation. Specifically, when the wrist is extended about 20 degrees and ulnarly deviated by 10 degrees, it allows for better positioning of the fingers for grasping and manipulation. This position enhances the efficacy of finger movements and increases the overall grip strength by providing a stable base from which the fingers can operate.

In this position, the extensor muscles are optimally engaged, allowing for efficient finger flexion and the ability to perform various tasks effectively. Such positioning also contributes to maintaining the appropriate length-tension relationship of the muscles involved in hand function. Therefore, this alignment not only supports the mechanics of gripping but also helps in achieving a balance between mobility and stability in well-coordinated hand movements.

While other options do present varying degrees of wrist and finger positions, they do not reflect the established functional wrist position that is most advantageous for hand function during activities requiring grasp and manipulation.