Advanced searches left 3/3

Metatarsophalangeal Joint - Crossref

Summarized by Plex Scholar
Last Updated: 23 April 2022

* If you want to update the article please login/register

Structural assessment of pre-flexion in silicone implants for arthroplasty of the first metatarsophalangeal joint

For stress and bending moment respectively, comparison between models revealed mean deviations of up to 32. 5% for strains and 14. 01% for bending moment in Swanson's implant, while Tornier implant mean variations of 29. 73% and 62. 5 percent were found for stress and bending time. The maximum stress value obtained for the Swanson implant's hyperelastic model achieved a value of 28. 2 percent of the implant material's tensile strength, while in the Tornier implant reached a value of 25. 92 percent, according to the above figures, with a flexion angle of 64°. The results show that in finite element analysis, not only the stress state designed to achieve a critical flexion position in pleflexed implants models but also the silicone for implant material behavior to prevent dismissing the non-linear structural behavior of hyperelastic materials.

Source link: https://doi.org/10.1177/09544119221093473


The role of metatarsophalangeal joint arthroscopy in hallux rigidus treatment: technique and early results

Introducing: The hallux rigidus is a term used to describe a mobility deficit of the big toe's metatarsophalangeal joint due to osteoarthritic degeneration. During cadaveric studies, the cartilaginous erosion of the metatarsal head and / or the base of the phalange, as well as the dorsal osteophyte of the first metatarsal head were discovered. Hypothesis: Arthroscopic debridement of the first metatarsophalangeal joint improves the first metatarsophalangeal joint's postoperative clinical results in comparison to isolated percutaneous therapy. At 3 months postoperatively, 11 patients were divided into two groups and clinically tested.

Source link: https://doi.org/10.55453/rjmm.2018.121.3.6


Osteoarthritis of the Second Metatarsophalangeal Joint Associated With Hallux Valgus Deformity

This review investigated the connection between arthritis of the second MTP joint in hallux valgus patients and the relationship between arthritis of the second MTP joint and hallux deformity. Methods: A total of 382 patients underwent surgery for symptomatic hallux valgus deformities by the two senior authors from November 2011 to December 2012. Patients with osteoarthritis were then evaluated and classified according to joint space narrowing and osteophyte formation. The first metatarsal bone lengths were compared between the two groups in terms of their hallux valgus angle, intermetatarsal angle, distal metatarsal articular angle, hypermobility of the first metatarsal bone, and the length ratio of the first and second metatarsal bone. Correlation coefficients were used to determine the severity of hallux valgus and the degree of osteoarthritis of the second MTP joint. Results: The IMA of the OA company was 16. 2 2. 9 degrees, and NOA group's was 15. 4 3. 3 degrees. The OA's DMAA was 18. 2 8. 3 degrees, and NOA's was 16. 1 8. 0 degrees. There were no significant differences between the two groups in terms of the HVA, hypermobility, the length of the second metatarsal bone, and the length ratios of the second and first metatarsal bones. In addition, there were no positive correlations between the DMAA, the length of the second metatarsal bone's second metatarsal bone, and the metatarsal length ratio.

Source link: https://doi.org/10.1177/1071100714552478


Clinical Efficacy of the First Metatarsophalangeal Joint Arthroplasty as a Curative Procedure for Hallux Interphalangeal Joint Wounds in Patients with Diabetes

OBJECTIVE — At the plantar hallux interphalangeal joint in diabetic patients with diabetes, we will investigate the safety and effectiveness of first metatarsophalangeal joint arthroplasty in comparison to standard, nonsurgical wound care of wounds. DESIGN AND METHODS—We analyzed 41 patients with ulcers identified as University of Texas Grade 1A or 2A at the plantar portion of the first metatarsophalangeal joint using a case-control system.

Source link: https://doi.org/10.2337/diacare.26.12.3284


Radiographic evaluation of congruency of the first metatarsophalangeal joint in hallux valgus

Abstract Background: The congruence of the first metatarsophalangeal joint is highly important in the selection of surgical methods and prognosis, but radiographic evaluation methods are still lacking. Methods We selected patients with hallux valgus with a weightbearing X-ray in the outpatient facility and measured their hallux valgus angle. The higher the degree of hallux valgus was, the greater the percentage of incongruence of the first MTP joint was. In the DMAA, MTPJA, and CI, significant differences were found between the congruency and incongruency groups of patients with moderate-to-severe hallux valgus. The DMAA and HVA were positively correlated in the congruency group, according to the correlation report, but the MTPJA, CI, and HVA had poor correlation coefficients, but the MTPJA, CI, and HVA had poor correlation coefficients. The DMAA and HVA were not linked in the incongruence group; however, the MTPJA and HVA were highly correlated, and the CI and HVA showed a negative correlation P.

Source link: https://doi.org/10.1186/s13018-022-03028-1


Finite Element Modeling of Planus and Rectus Foot Types for the Study of First Metatarsophalangeal and First Metatarsocuneiform Joint Contact Mechanics

We wanted to create a framework for FE modeling of the medial forefoot's so that we could accurately forecast experimental results of first MTP and first MTC joint loadings. During quasi-static load, a custom-built force-controlled cadaveric test bench was used to derive intracapsular pressure sensor measurements of contact pressure, load, and region. Mesh sensor tests and first MTC joint cartilage calibrations of moduli were performed for first MTP and first MTC joint cartilage. Following the first MTP joint at 10 MPa and 20 MPa, respectively, according to a lower compressive modulus, consistent with previous experimental findings, was most effective to the first MTP. Mean errors in contact pressures, capabilities, and regions were 24 percent, 4%, and 40% at the first MTC joint, respectively, with 19%, 23%, 19%, and 19% at the first MTC joint. The current developmental framework may be used to develop future models of the first MTP and first MTC joint contact mechanics.

Source link: https://doi.org/10.1115/1.4053791


Minimally Invasive Management of Dorsiflexion Contracture at the Metatarsophalangeal Joint and Plantarflexion Contracture at the Proximal Interphalangeal Joint of the Fifth Toe

At the fifth toe proximal interphalangeal joint, several surgical solutions have been described to treat persistent dorsiflexion contracture at the metatarsophalangeal joint and plantarflexion joint. We perform a plantar closing wedge osteotomy of the 5th toe at the base of its proximal phalanx and the middle phalanx, as a result of a lateral phalanx and the proximal phalanx.

Source link: https://doi.org/10.4081/std.2011.e27


Biomechanical Comparison of Metatarsal Head Designs in First Metatarsophalangeal Joint Arthroplasty

BACKGROUND: The loss of MTP joint mobility and pain is attributed to arthritis of the metatarsophalangeal joint. The intention was to compare the sagittal kinematics and articulating contact characteristics of four different first metatarsal head designs of an MTP joint implant using cadaveric model. Methods: Six cadaveric feet were each fitted with a single modular first MTP joint total arthroplasty. The native joint was compared to four separate reconstructed cases, according to data collected. Each reconstructed joint used a different metatarsal-head component when reusing the same phalangeal component to compare the 4 alternative metatarsal head styles. All reconstructed joints had contact areas lower than the original reconstructed joints. Conclusions: ROM was found to be more suitable for the more anatomically developed metatarsal head in this review, although contact characteristics did not differ among different designs.

Source link: https://doi.org/10.1177/1071100713483096


First Metatarsophalangeal Joint Reaction Forces during High-Heel Gait

During the toe-off phase of gait walking in bare feet and in high heeled shoes, 11 normal females were estimated during 11 normal females during the toe-off phase of gait. The average peak force for barefoot and high-heeled gait was between FJ: 0. 8 and 1. 58 times body weight, FS: 0. 44 and 1. 03 times body weight, and FRES: 0. 93 and 1. 88 times body mass.

Source link: https://doi.org/10.1177/107110079101100505


Posttraumatic Proximal Migration of the First Metatarsophalangeal Joint Sesamoids: A Report of Four Cases

Four cases are reported with plantar plate damage to the first metatarsophalangeal joint and proximal retraction of the sesamoids by the flexor hallucis brevis. The first MTP joint and pain were associated with diffuse pain below the first MTP joint and pain, as well as extremes of joint mobility in all patients. Plantar plate disruption can be diagnosed by taking both feet on the cassette and centering the beam perpendicular to it. One patient required sesamoidectomy for chronic pain, but the final patient is still unable to return to his pre-injury job that requires standing and heavy lifting.

Source link: https://doi.org/10.1177/107110079101200210

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions