AI Article Synopsis
Article Abstract
Background: Kinetic data obtained during gait can be used to clarify the biomechanical pathogenesis of osteoarthritis of the lower extremity. This study aimed to investigate the difference in ankle varus moment between the varus angulation and medial translation types of medial ankle osteoarthritis, and to identify the radiographic measurements associated with ankle varus moment.
Methods: Twenty-four consecutive patients [mean age 65.8 (SD) 8.0 years; 9 men and 15 women] with medial ankle osteoarthritis were included. Fourteen and 10 patients had the varus angulation (tibiotalar tilt angle≥3 degrees) and medial translation (tibiotalar tilt angle<3 degrees) types, respectively. All patients underwent three-dimensional gait analysis, and the maximum varus moment of the ankle was recorded. Radiographic measurement included tibial plafond inclination, tibiotalar tilt angle, talar dome inclination, and lateral talo-first metatarsal angle. Comparison between the two types of medial ankle osteoarthritis and the relationship between the maximum ankle varus moment and radiographic measurements were analyzed.
Results: The mean tibial plafond inclination, tibiotalar tilt angle, talar dome inclination, lateral talo-first metatarsal angle, and maximum ankle varus moment were 6.4 degrees (SD 3.3 degrees), 5.0 degrees (SD 4.6 degrees), 11.4 degrees (SD 5.2 degrees), -6.5 degrees (SD 11.7 degrees), and 0.185 (SD 0.082) Nm/kg, respectively. The varus angulation type showed a greater maximum ankle varus moment than the medial translation type (p = .005). The lateral talo-first metatarsal angle was significantly associated with the maximum ankle varus moment (p = .041) in the multiple regression analysis.
Conclusion: The varus angulation type of medial ankle osteoarthritis is considered to be more imbalanced biomechanically than the medial displacement type. The lateral talo-first metatarsal angle, being significantly associated with the ankle varus moment, should be considered for correction during motion-preserving surgeries for medial ankle osteoarthritis to restore the biomechanical balance of the ankle.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8224910 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0253570 | PLOS |
Publication Analysis
Top Keywords
Similar Publications
Advanced Varus Deformity Associated with Medial Knee Osteoarthritis is a Potential Predictor of Anterior Cruciate Ligament Tear and Risk for Suitable Unicompartmental Knee Arthroplasty.
J Arthroplasty
January 2025
Department of Orthopedic Surgery, Nishinomiya Watanabe Hospital, Hyogo, Japan.
Background: Previous clinical studies suggest that preserving the anterior cruciate ligament (ACL) is crucial for stable knee motion and long-term longevity of the reconstructed knee. The ACL damage or loss often occurs in advanced medial osteoarthritis (OA). This study aimed to investigate the correlation between ACL damage and varus deformity progression as a risk factor for ACL tears in knee OA.
View Article and Find Full Text PDFSplit tendon transfer of the posterior tibialis for spastic equinovarus foot deformity: Does tendon routing impact post-operative ankle kinematics?
Gait Posture
January 2025
Department of Orthopaedics, BC Children's Hospital, 4500 Oak St, Vancouver, BC V6H 3N1, Canada; The Motion Lab, Sunny Hill Health Centre, 4480 Oak St, Vancouver, BC V6H 3N1, Canada; University of British Columbia, Faculty of Medicine, Department of Orthopaedics, 317 - 2194 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada.
Background: Split tendon transfer of the posterior tibialis (SPOTT) is a surgical procedure in which the split posterior tibialis tendon is transferred posterior to the fibula (PO) with insertion on the peroneus brevis tendon to rebalance the forces across the hindfoot. Routing of the split tendon through the interosseous membrane (IO) is a variation with the potential benefit of augmenting ankle dorsiflexion in swing.
Research Question: Does IO routing improve ankle dorsiflexion in swing and/or varus in stance compared to PO routing?
Methods: A retrospective chart review was completed to identify forty-two patients who underwent a SPOTT procedure for equinovarus foot deformity.
Effects of elastic ankle braces on dynamic stability in patients with functional ankle instability.
Am J Transl Res
December 2024
School of Physical Education, Nanchang University Nanchang, Jiangxi, China.
Objective: To investigate the protective effects of ankle braces in patients with functional ankle instability.
Methods: This retrospective study involved 30 participants recruited from January 2023 to December 2023 at School of Physical Education, Nanchang University. These participants were divided into an ankle brace group wearing braces and a control group without braces.
Correction: Effect of inverse kinematic alignment total knee arthroplasty on coronal alignment of the ankle joint in patients with varus knee deformity.
Arch Orthop Trauma Surg
January 2025
Division of Orthopedic Surgery, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel.
HKA angle exceeding 5 degrees is strongly associated with lateral patellar translation beyond 2 mm: surgical recommendations for avoiding adverse effects on the patellofemoral joint after OWHTO.
J Orthop Surg Res
January 2025
Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
Purpose: Previous studies reported that anterior knee pain (AKP) occurs with an incidence of 32% after opening-wedge high tibial osteotomy (OWHTO). However, the biomechanical effects of this procedure on patellofemoral joints (PFJs) remain unclear. We aimed to quantify the changes in the kinematics and cartilage conditions of the PFJ during stair climbing before and after OWHTO.
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!