First metatarsophalangeal joint: Embryology, anatomy and biomechanics

Figure 4 The examiner applies force to the plantar side of the first metatarsal head with one hand, immobilizing the second to fifth metatarsal bones with the other[45]. The patient was seated in a non-weightbearing position while the displacements were measured using the Klaue method. Citation: Biz C, Maso G, Malgarini E, Tagliapietra J, Ruggieri P. Hypermobility of the First Ray: The Cinderella of the measurements conventionally assessed for correction of Hallux Valgus. Acta Biomed 2020; 91: 47-59. Copyright© 2020 Acta Bio Medica Society of Medicine and Natural Sciences of Parma. This image is licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. License details: https://creativecommons.org/Licenses/by/4.0/. A: The force is applied initiall in a purely dorsal direction; B: At a 45-degree dorsomedial angle to the transverse plane.