| Muscle | Insertion | Function |
|---|---|---|
| Biceps | Radial tuberosity, bicipital aponeurosis | Supination of the forearm and elbow flexion |
| Pronator Teres | Lateral surface of the radius (midshaft) | Pronates and weakly flexes the forearm |
| Supinator * | Proximal lateral radius | Supination of the forearm |
| Brachioradialis | Styloid process of radius | Flexion of the forearm at the elbow |
* Supinator is a deep muscle and shown here for completeness.