Final answer:
Decreased capillary refill of the affected limb is a common symptom and reliable early clinical indicator of compartment syndrome after a fracture.
Step-by-step explanation:
After a fracture, nurses assess the client for decreased capillary refill of the affected limb as a common symptom and reliable early clinical indicator of compartment syndrome. Compartment syndrome occurs when there is increased pressure within a muscle compartment, which can result in reduced blood flow and tissue damage. Decreased capillary refill indicates compromised blood flow to the affected limb, which is a sign of compartment syndrome and requires immediate medical attention.