Knee osteoarthritis Knee osteoarthritis, Total knee arthoplasty, Insert, Muscle activity
Conditions
Interventions
The study will target patients who have undergone bilateral TKA and received different inserts (CR-type and MP-type) in each knee. After performing a resting MRI, the patients will engage in stair asc
MeSH Code: D005205
stair ascent and descent
Sponsors
Hashimoto Shogo
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1) Patients who have undergone bilateral total knee arthroplasty (TKA) for osteoarthritis more than one year ago 2) Patients who received a cruciate-retaining (CR) insert in one knee and a medial-pivot (MP) insert in the other knee 3) Patients who are eligible for MRI examination 4) Outpatients 5) Patients who have provided written informed consent to participate in this study
Exclusion criteria
Exclusion criteria: 1) Patients with inflammatory diseases such as rheumatoid arthritis 2) Patients with secondary knee osteoarthritis due to ligament injury or other causes 3) Patients who are unable to perform stair ascent and descent 4) Patients with missing data on postoperative clinical outcomes or imaging findings
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Muscle activity will be evaluated using T2 relaxation times obtained from MRI T2 mapping. Regions of interest (ROIs) will be defined for each thigh muscle, and changes in T2 relaxation times between resting and post-exercise MRI will be measured. | — |
Secondary
| Measure | Time frame |
|---|---|
| Quadriceps muscle strength will be measured to evaluate its association with muscle activity. | — |
Contacts
Public ContactShogo Hashimoto
Gunma university hospital
Outcome results
None listed