Hinge joints allow flexion and extension only. Flexion – bending a joint. This occurs when the angle of a joint decreases. For example, the elbow flexes when performing a biceps curl.

The results reported are on the 45 patients available for follow-up examination. Of the 45 patients (54 arthroplasties), 42 were women aged 41 to 83 years (average age, 61 years) at the time of ...