Weight-bearing three-dimensional computed tomography analysis of the forefoot in patients with flatfoot deformity

Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association
Naoki YoshiokaToshikazu Kubo

Abstract

The recent classifications for posterior tibial tendon dysfunction (PTTD) stage II are based on forefoot deformity, but there is still no consensus regarding a detailed explanation of the clinical condition. The purposes of this study were to clarify the clinical condition of flatfoot deformity using three-dimensional (3D) computed tomography (CT) imaging under loading on both healthy and flat feet and to compare 3D movement of the forefoot in response to load. Ten volunteers and 10 PTTD stage II patients with symptomatic flatfoot deformity were examined. CT scans of 20 healthy and 20 flat feet were performed under non-loading and full weight-bearing conditions. Images of the tibia and foot arch bones (talus, calcaneus, navicular, and first and fifth metatarsal bones) were reconstructed into 3D models. Rotations of individual tarsal bone or metatarsal bone were described by the Eulerian angles. Compared with healthy feet, flat feet experienced plantarflexion of the fifth metatarsal bone relative to the first metatarsal bone under loading conditions. We defined this phenomenon as synonymous with forefoot varus on the coronal plane. The results of this study have clarified part of the clinical condition of the forefoot in flatfoo...Continue Reading

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Citations

Feb 25, 2020·The Journal of the American Academy of Orthopaedic Surgeons·Matthew S Conti, Scott J Ellis
Jul 10, 2018·Acta ortopedica brasileira·Alexandre Leme Godoy-SantosUNKNOWN WEIGHT-BEARING CT INTERNATIONAL STUDY GROUP
Jun 29, 2018·EFORT Open Reviews·François LintzUNKNOWN Weight Bearing CT International Study Group
Nov 25, 2017·Foot & Ankle International·Alexej BargCharles L Saltzman
Jul 22, 2020·The Journal of the American Academy of Orthopaedic Surgeons·Matthew S Conti, Scott J Ellis
Dec 16, 2020·Orthopaedics & Traumatology, Surgery & Research : OTSR·François LintzJean Brilhault
May 25, 2021·The Journal of Foot and Ankle Surgery : Official Publication of the American College of Foot and Ankle Surgeons·Joan Ferràs-TarragóVicent Vicent-Carsí
Jan 18, 2020·The Indian Journal of Radiology & Imaging·Khushboo PilaniaPradeep Monoot
Aug 2, 2021·Foot and Ankle Clinics·Francois Lintz, Cesar de Cesar Netto
Aug 6, 2021·Foot & Ankle International·Neil BakshiAlexej Barg

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