[Biomechanics of the first metatarsophalangeal joint after replacement]. / Analiz biomekhaniki pervogo plyusnefalangovogo sustava posle endoprotezirovaniya.
Khirurgiia (Mosk)
; (5): 58-64, 2023.
Article
em Ru
| MEDLINE
| ID: mdl-37186652
ABSTRACT
OBJECTIVE:
Analysis of biomechanics of the first metatarsophalangeal joint after arthroplasty, interaction between bones and two implants of the first metatarsophalangeal joint using skeletal model of the foot. MATERIAL ANDMETHODS:
We developed anatomically adapted all-ceramic non-coupled endoprosthesis of proximal interphalangeal joint between 2016 and 2021. To create a model of the foot, we used diagnostic computed tomography whose images were applied in 3D sculpting system and computer-aided design system for final geometric modeling of the joint.RESULTS:
In dorsal flexion of the first metatarsophalangeal joint under 45° with the presence of implant, cortical bone tissue can withstand a load of up to 40 kg. Cortical bone tissue with implant can withstand a load of up to 305 kg without dorsal flexion. Strength of implant elements made of zirconium ceramics significantly exceeds strength of bone tissue within implant-bone tissue connection.CONCLUSION:
Postoperative axial load on the first metatarsophalangeal joint up to 35 kg with maximum dorsal flexion up to 45° is the most appropriate. Higher load and hyperextension over 45° may be followed by postoperative complications such as implant instability, dislocation and periprosthetic fracture.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Artropatias
/
Prótese Articular
/
Articulação Metatarsofalângica
Limite:
Humans
Idioma:
Ru
Ano de publicação:
2023
Tipo de documento:
Article