Final answer:
Postoperative care of a client with an orthopedic leg injury prioritizes monitoring for loss of blanching ability of toenail beds to detect circulatory compromise, which is critical for timely intervention and preserving limb viability.
Step-by-step explanation:
The postoperative care of a client with an orthopedic leg injury requires close and careful monitoring. Among the options provided, monitoring for loss of blanching ability of toenail beds is the highest priority immediately following surgery. This assessment helps to detect any compromise in the circulatory status of the extremity, which can be indicative of serious complications such as compartment syndrome or thrombosis. While all the provided options are important, preserving the viability of the limb is critical, and early identification of circulatory issues allows for timely intervention. Therefore, vascular assessment and ensuring blood flow is not impeded by the cast are crucial for the patient's recovery.