Related Experiment Video
Updated: Mar 30, 2026
09:01
Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
Published on: January 24, 2018
12.5K
Total Knee Arthroplasty: Does the Tibial Medial Side Defect Affect Outcome?
Mohammad Vahedian-Ardakani1, S M Javad Mortazavi1, Mahmoud Farzan1
1Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Acta Medica Iranica
|November 8, 2015
Summary
Total knee arthroplasty (TKA) improves outcomes for knee osteoarthritis patients. However, the severity of medial tibial defects significantly impacts surgical results, with less severe defects yielding better outcomes.
Area of Science:
- Orthopedics
- Rheumatology
- Biomedical Engineering
Background:
- Primary knee osteoarthritis (OA) is a degenerative joint disease causing pain, deformity, and reduced function.
- Total knee arthroplasty (TKA) is a common surgical intervention for severe knee OA, aiming to alleviate pain and improve quality of life.
- The impact of medial tibial defects on TKA outcomes remains under-investigated.
Purpose of the Study:
- To investigate the association between the severity of medial tibial defects and the clinical outcomes following TKA.
- To determine if the degree of tibial defect influences pain reduction, functional improvement, and quality of life post-surgery.
Main Methods:
- A study involving 124 patients (143 knees) with primary knee OA and varying degrees of medial tibial defects.
- Patients were classified into two groups based on the Rand classification of knee defects (Group 1: Rand I-II, Group 2: Rand III-IV).
- Outcomes including pain (Visual Analog Scale), knee alignment (3-joint X-ray), quality of life (SF-36), knee function (WOMAC, KSS) were assessed pre- and post-operatively with a mean follow-up of 18.2 months.
Main Results:
- All measured parameters showed significant improvement within both groups post-TKA (P≤0.001).
- Postoperative comparison revealed significant differences between groups in pain, radiographic, and functional scores (KSS, WOMAC) (P≤0.05).
- Group 1 (less severe defects) demonstrated superior outcomes compared to Group 2 (more severe defects).
Conclusions:
- TKA is an effective treatment for severe knee OA with varus deformity.
- The severity of medial tibial defects is a significant predictor of TKA outcomes.
- Patients with less severe medial tibial defects experience more favorable results after TKA.
