68-year-old woman, outpatient clinic eight weeks after transtibial amputation

A 68-year-old woman with type 2 diabetes mellitus, hypertension, and chronic kidney disease presents to your outpatient PM&R clinic eight weeks after a right transtibial amputation for a non-healing plantar ulcer. She uses a wheelchair full-time and expresses a strong desire to walk again, but is concerned about new swelling and warmth in her left foot.