Fig. 3From: Differences and similarities in muscle architecture of fibularis longus and brevis—An observational descriptive cross-sectional and feasibility studySchematic illustration of the fibularis longus and brevis, illustrating the different physiological cross-sectional areas (PCSA:s) for a fusiform shape (A) and pennate muscle (B), as well as how the insertional angle for the muscle fibres varies from 10 degrees proximal to 30 degrees distal over the length of the FB tendonBack to article page