Correct Walker Height for Elbow Positioning

A nurse is educating a patient who has recently been fitted with a new walker. The nurse explains that the walker will help improve mobility and provide stability during ambulation. The nurse stresses the importance of using the device correctly to prevent falls. As part of the education, the nurse instructs the patient to adjust the height of the walker to a level that allows the patient's elbows to be at a _____ degree angle when the hands are resting on the handgrips.