There is no standardized method reported in the literature to measure ROM of the ankle after a total ankle arthroplasty, which limits the possibility to compare results from the various ankle designs. It seems that most of the measurements are a combination of ankle and midfoot motion, not the tibiotalar joint. A protocol was developed to accurately measure the true tibiotalar and midfoot motion before and after an ankle replacement. Lateral radiographs were taken of the ankle with the patient in a weightbearing position, and measurements were done along fixed landmarks. In this study, the tibiotalar, midfoot, and combined ROM were measured preoperative and 1 year postoperative in a standardized, reproducible fashion. The preoperative tibiotalar ROM was 18.5 degrees and combined ankle and midfoot motion 25.1 degrees. The true tibiotalar motion after an Agility total ankle arthroplasty was 23.4 degrees, and the combined ankle and midfoot motion was 31.3 degrees. The average improvement in ROM in the tibiotalar joint was approximately 5 degrees, and combined ROM was 6.1 degrees. Preoperative ROM proved to be the main factor determining the eventual postoperative ROM. It is possible to accurately measure the true ankle and the midfoot motion and those measurements should be used when reporting on the results of ankle replacements. Total ankle arthroplasty resulted in a statistically significant, but clinically less than expected, increase in ROM.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/01.blo.0000132180.69464.84 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Using functional calibration methods to estimate the midfoot joint center in planovalgus feet.
J Biomech
January 2025
Clinic for Orthopedics, Heidelberg University Hospital, Heidelberg, Germany. Electronic address:
In order to improve the understanding foot function in the presence of planovalgus foot deformity, functional joint center determination is applied to the ankle and midfoot for application in 3D-gait analysis. Gait data of 36 patients with planovalgus (PV) foot deformity as well as of 33 typically developing (TD) subjects were collected using foot markers according to the Heidelberg Foot Measurement method. During single-limb stance subjects performed a circular movement of the foot and ankle (CIR) by drawing a circle with the hallux in the air.
View Article and Find Full Text PDFFoot orthosis design for children with Charcot-Marie-Tooth and impact on gait.
Prosthet Orthot Int
January 2025
Centre de recherche du CHU Sainte-Justine, Département des sciences de l'activité physique, Faculté des sciences, Université du Québec à Montréal, Montréal, Canada.
Background: Charcot-Marie-Tooth (CMT) is a progressive disease resulting in distal sensory deficit and muscular weakness. As the disease progresses, most children develop a cavovarus foot deformity. Foot orthoses (FO) are widely prescribed in CMT to support the foot and improve gait, but there is a lack of guidelines for their conception.
View Article and Find Full Text PDFA valid novel ground reaction force distribution algorithm to determine midfoot kinetics of gait with a single force plate.
Gait Posture
December 2024
Marquette University, 1250 W. Wisconsin Ave, Milwaukee, WI 53233, United States; Shriners Children's Chicago, 2211 N. Oak Park Ave, Chicago, IL 60707, United States.
Background: Understanding midfoot joint kinetics is valuable for improved treatment of foot pathologies. Segmental foot kinetics cannot currently be obtained in a standard gait lab without the use of multiple force plates or a pedobarographic plate overlaid with a force plate due to the single ground reaction force (GRF) vector.
Research Question: Can an algorithm be created to distribute the GRF into multiple segmental vectors that will allow for calculation of accurate midfoot and ankle moments?
Methods: 20 pediatric subjects (10 typically developing, 10 with foot pathology) underwent multi-segment foot gait analysis using the Milwaukee Foot Model.
Kinematic coordination in the rearfoot, midfoot, and forefoot differs depending on subgroups based on foot stiffness and kinetic parameters during walking.
Foot (Edinb)
December 2024
Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, 555-36, Gakuendai, Kurose, Higashihiroshima-shi, Hiroshima 739-2695, Japan. Electronic address:
This study aimed to classify subgroups of healthy young adults based on foot stiffness and related kinetic parameters during gait, as well as to analyze intra-foot sagittal kinematics within each subgroup. Data were collected from 25 males and 24 females using a 3D motion capture system, which measured the rearfoot, midfoot, and forefoot segments. Cluster analysis identified three subgroups based on the following variables: the truss coefficient, windlass coefficient, forward component of ground reaction force (F-GRF), and ankle plantar flexion power.
View Article and Find Full Text PDFBackground: Foot strike patterns during running are typically categorized into two types: non-rearfoot strike (NRFS) and rearfoot strike (RFS), or as three distinct types: forefoot strike (FFS), midfoot strike (MFS), and RFS, based on which part of the foot lands first. Various methods, including two-dimensional (2D) visual-based methods and three-dimensional (3D) motion capture-based methods utilizing parameters such as the strike index (SI) or strike angle (SA), have been employed to assess these patterns. However, the consistency between the results obtained from each method remains debatable.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!