What physical agent would provide the greatest benefit for a patient with limited wrist and finger motion and dry skin after multiple fractures?

Paraffin is particularly beneficial for patients with limited wrist and finger motion and dry skin, especially following the trauma of multiple fractures. The heated paraffin wax provides warmth and moisture, which enhances blood flow to the area, promotes tissue relaxation, and reduces stiffness in the joints. This modality is especially effective for hands, as it allows for even heat distribution, which can penetrate deeper tissues and increase elasticity in both the skin and underlying soft tissues.

Paraffin treatments also facilitate easier movement and improve range of motion in the fingers and wrist. The wax envelops the hand, creating a soothing environment that hydrates dry skin, making it particularly suitable for this patient demographic who may exhibit compromised skin integrity due to immobilization or previous injuries.

In contrast, although contact ultrasound and hot packs can also relieve pain and improve circulation, they may not adequately address the specific combination of limited motion and dry skin as effectively as paraffin. Functional electrical stimulation typically targets muscle re-education and contraction, which is not the primary goal when dealing with restricted motion due to stiffness rather than weakness. Thus, paraffin emerges as the most appropriate therapeutic agent in this scenario.