Forearm Supination Increases the Safety Corridor and Target Exposure for Ultrasound-Guided Flexor Pollicis Longus Injection: A Prospective Study in Healthy Adults
Background/Objectives: Ultrasound-guided flexor pollicis longus (FPL) injection is limited by the muscle’s deep location and its proximity to the cephalic vein (CV) and superficial branch of the radial nerve (SBRN). We aimed to identify the wrist and forearm posture producing the largest measured corridor width and tar...