ArticleClinics in orthopedic surgery2021
The Influence of Femoral Internal Rotation on Patellar Tracking in Total Knee Arthroplasty Using Gap Technique.
Article in Clinics in orthopedic surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Management of patella maltracking after total knee arthroplasty: a systematic review.Musculoskeletal surgery · 2023Pooled it
- Does Patellar Resurfacing Improve Outcomes in Valgus Osteoarthritis with Compromised Patellofemoral Joint Status? A Retrospective Consecutive Comparative Study.Journal of clinical medicine · 2026Article
- MRI-based assessment of posterior condylar cartilage defects and their impact on femoral component rotational alignment in osteoarthritic knees.Journal of orthopaedic surgery and research · 2026Article
- Effects of a novel externally rotated trochlear design on patellofemoral kinematics in total knee arthroplasty: A cadaveric study.Journal of experimental orthopaedics · 2025Article
- The Role of Computed Tomography in Achieving True External Rotation in Robotic Knee Replacement: A Retrospective Analysis of 300 Knees.Journal of orthopaedic case reports · 2025Article
- "Boot Sign" of Anterior Femoral Condylar Resectional Shape during Total Knee Arthroplasty Is More Frequent in Asian Patients.Journal of personalized medicine · 2023Article
- Coronal alignment in total knee arthroplasty: a review.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2023Review
- The Comparison of Lower Extremity Length and Angle between Computed Radiography-Based Teleoroentgenogram and EOSDiagnostics (Basel, Switzerland) · 2022Article
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6 authors.
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Abstract
backgroudFemoral internal rotation in total knee arthroplasty (TKA) is well known as one of the main causes of patellar maltracking. Although femoral internal rotation in TKA is considered unacceptable due to the risk of patellar maltracking, it is sometimes required for ligament balancing. We evaluated the influence of femoral internal rotation on patellar tracking in TKA performed using the gap technique.
methodsFrom April 2008 to May 2018, 1,612 cases of TKA were done. Among them, 245 cases of TKA for osteoarthritis were followed up for at least 1 year and included in this study. We compared patellar tracking in two groups; group I consisted of 99 cases whose femoral rotation was less than 0° and group II consisted of 146 cases whose femoral rotation was 3°-5° external rotation. Preoperative femoral rotation was measured with the condylar twist angle (CTA) by using computed tomography. The patella was replaced in all cases. Patellar tracking was evaluated with patellar tilt angle (lateral tilt [+] and medial tilt [-]) in the merchant radiograph. Statistical analysis was done using Mann-Whitney
resultsThe preoperative CTA was 5.3° ± 1.6° in group I and 5.4° ± 1.6° in group II, showing no statistically significant difference between groups (
conclusionsCompared with femoral external rotation, femoral internal rotation with ligament balance in TKA was not more associated with patellar maltracking. Therefore, patellar tracking might be related with ligament balance in flexion regardless of the anatomic femoral rotational alignment.
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