Final answer:
To test the gluteus maximus isolated from the hamstrings, place the patient in a prone position with the knee extended while they attempt to lift the thigh against resistance.
Step-by-step explanation:
To manual muscle test the gluteus maximus without involving the hamstrings, you should have the patient lie face down on the examination table, which is referred to as the prone position.
In this position, the examiner can apply resistance as the patient attempts to extend the hip by lifting the thigh off the table.
To further isolate the gluteus maximus and minimize hamstring involvement, the knee should be kept in a fully extended (straight) position during the test. By avoiding knee flexion, which would activate the hamstrings, the focus is maintained on the gluteus maximus during the resistance test.