emphasizes bending the elbow to bring the forearm closer to the upper arm, making it an extension-focused movement. If you’re ever unsure, keep this simple maxim in mind: flexion is forward and ...

Flexion – bending a joint. This occurs when the angle of a joint decreases. For example, the elbow flexes when performing a biceps curl. Extension – straightening a joint. This occurs when the ...

Hold a hammer or stick vertically in one hand with your elbow at a 90-degree angle by your side. Rotate your forearm to bring ...

High-speed video analysis studies from Kibler et al5 have demonstrated that during the service the elbow moves from 116° to 20° of flexion within 0.21 s, with ball impact occurring at approximately ...

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.

Design Case report. Setting Amateur tennis player. Patient A girl (16 y.o.) affected by an Ehler-Danlos syndrome presented pain in the right elbow and the right wrist after a season of tennis.