Preoperative Frailty Assessment With Ultrasound in Elderly Patients

Preoperative Frailty Assessment With Point-of-care Ultrasound in Elderly Patients Scheduled for Total Knee Arthroplasty

In this study, the investigators aim to evaluate the prediction accuracy of the thickness measured with point-of-care ultrasound of the rectus abdominis, biceps brachii muscles of frailty.

Inclusion Criteria:

• Patients 60 years old or older scheduled for total knee arthroplasty

Exclusion Criteria:

• Unable to communicate with the patient or the patient's guardian
• Myopathy
• History of injury of rectus abdominis, biceps brachii or quadriceps femoris muscle.
• History of total knee arthroplasty in the recent 3 months prior to surgery