Fig. 1

Depiction of probe placement for ultrasonographic measurement: flexor digitorum longus thickness (A1,A2) and cross-sectional area (CSA) (A3,A4), flexor digitorum brevis thickness (B1,B2) and CSA (B3,B4), abductor hallucis thickness (C1,C2) and CSA (C3,C4), tibialis anterior thickness (D1,D2) and CSA (D3,D4), and tibialis posterior thickness (E1,E2) and CSA (E3,E4).