Although metatarsophalangeal (MTP) plantar plate tears are common, they are still often missed. The purpose of this study is to find the best clinical variables to define and grade the plantar plate injuries. Sixty-eight patients (100 MTP joints) were graded arthroscopically and divided into five groups (0 to IV) according to the anatomical classification. Their medical records were reviewed to establish correlations of clinical findings with the anatomical lesions. The positive correlations found were acute pain, widening of the interdigital space, loss of ground touch, positivity of the MTP joint drawer test, reduction of the toe purchase, and toe supination. The drawer test is the most reliable and accurate tool to classify and grade the plantar plate lesion, followed by ground touch and rotational deformities. It is possible to improve the accuracy of diagnosis of plantar plate tears by means of the combination of both clinical history and physical examination data.
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Gait Posture
January 2025
The University of Tokyo, Department of Biological Sciences, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan. Electronic address:
Background: Several foot models have been developed to estimate the behaviors of the plantar aponeurosis (PA) during movements. However, these models did not consider the actual path of the PA, and their validity remains insufficiently investigated due to the absence of direct PA measurement during movements.
Research Question: Would developing a foot model that considers the actual path of the PA improve the accuracy of estimating the PA behavior during movements?
Methods: The foot model was developed based on the CT scans of the six feet with 20 markers attached.
J Foot Ankle Surg
January 2025
Universitätsklinikum Carl Gustav Carus an der TU Dresden, Fetscherstr. 74, 01307 Dresden, Germany.
Introduction: With the increased use of computed tomography scans in cases with trimalleolar ankle fractures, bone fragments between the posterior malleolus and the rest of the articular surface tibial plafond surface - described as intercalary fragments (ICFs) - can be recognized. The aim of this study was to determine the ICF size threshold for a significant change in the pressure distribution at the ankle joint, having a considerable impact on the remaining cartilage of the joint.
Design And Methods: Eight human cadaveric lower legs were used, and a posterior malleolus Bartoniček/Rammelt II fracture was created with sequential 2 mm, 4 mm, 6 mm, and 8 mm ICFs.
J Phys Ther Sci
January 2025
Department of Physical Therapy, International University of Health and Welfare: Minato-ku, Tokyo 107-0062, Japan.
[Purpose] This study aimed to investigate the reliability and validity of measuring isometric ankle plantar flexion strength using a handheld dynamometer (HHD) with a belt and metal plate. [Participants and Methods] This study enrolled 35 young healthy participants (22 men and 13 women, mean age; 21.2 years).
View Article and Find Full Text PDFClin Biomech (Bristol)
December 2024
Masuhara Clinic, 3-4-2, Tenmabashi, Kita-ku, Osaka 530-0042, Japan.
Background: Few studies have assessed vertical ground reaction force, contact time, contact area, and center of pressure during gait in the early phase post-total hip arthroplasty. This study aimed to investigate whether these parameters are more pronounced in participants post-total hip arthroplasty compared to healthy controls.
Methods: We included 22 female participants who underwent total hip arthroplasty (age, 68.
J Orthop Traumatol
December 2024
Sapienza Universitiy, Rome, Italy.
Introduction: The plantar plate, also called the plantar ligament, is a fibrocartilaginous structure found in the metatarsophalangeal (MTP) and interphalangeal (IP) joints. Our study aimed to evaluate the role of magnetic resonance imaging (MRI) performed with the patient in the standard position or with joint hyperextension (the "stress test", ST) in the study of plantar plate (PP) disease that involves metatarsophalangeal joints.
Materials And Methods: All patients underwent forefoot MRI (Atroscan C, Esaote, Genoa, Italy), operating at 0.
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