ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2017
Upright weight-bearing CT of the knee during flexion: changes of the patellofemoral and tibiofemoral articulations between 0° and 120°.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
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17 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.
- Healthy knees have a highly variable patellofemoral alignment: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Pooled it
- Assessment and management of torsional malalignment in paediatric patients with patellofemoral joint instability.Journal of children's orthopaedics · 2026Article
- Increased medial anterior tibial translation and reduced tibiofemoral rotation are observed during weight bearing in anterior cruciate ligament-deficient knees: A paired within-subject imaging analysis.Journal of experimental orthopaedics · 2026Article
- Weight-bearing computed tomography in knee pathologies: current evidence and future perspectives.Frontiers in surgery · 2026Review
- Trends in the Use of Weightbearing Computed Tomography.Journal of clinical medicine · 2024Review
- Component rotational mismatch in the standing position is a potential risk factor for unfavourable functional outcomes after total knee arthroplasty.Journal of experimental orthopaedics · 2024Article
- Reliability of Tibial Tubercle-Trochlear Groove Distance for Assessing Tibial Tubercle Lateralization: A Study Comparing Different Anatomic References.Orthopaedic journal of sports medicine · 2024Article
- The Value of Computed Tomography Scan in Three-dimensional Planning and Intraoperative Navigation in Primary Total Hip Arthroplasty.Hip & pelvis · 2024Review
- Validation of watershed-based segmentation of the cartilage surface from sequential CT arthrography scans.Quantitative imaging in medicine and surgery · 2022Article
- Weight-bearing MRI with a knee flexion angle of 20°: a study on additional MRI investigation modalities to support a more accurate understanding of patellofemoral instability.BMC musculoskeletal disorders · 2021Article
- Tibial tuberosity-tibial intercondylar midpoint distance measured on computed tomography scanner is not biased during knee rotation and could be clinically more relevant than current measurement systems.International orthopaedics · 2021Article
- Varus inclination of the tibia is related to patellofemoral osteoarthritis in Japanese female patients with moderate knee osteoarthritis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Article
- Comparison of 3D X-ray tomography with computed tomography in patients with distal extremity fractures.Skeletal radiology · 2020Article
- Arthroscopic assessment of patella tracking correlates with recurrent patellar instability.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Tibial Tuberosity-Trochlear Groove Distance Shows no Change in Patients with or Without Knee Osteoarthritis.The Eurasian journal of medicine · 2018Article
- WEIGHT-BEARING CONE BEAM CT SCANS AND ITS USES IN ANKLE, FOOT, AND KNEE: AN UPDATE ARTICLE.Acta ortopedica brasileiraArticle
- Weightbearing Computed Tomography for Assessment of Foot and Ankle Deformities: The Iowa Experience.The Iowa orthopaedic journalArticle
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo prospectively compare patellofemoral and tibiofemoral articulations in the upright weight-bearing position with different degrees of flexion using CT in order to gain a more thorough understanding of the development of diseases of the knee joint in a physiological position. MATERIALS AND
methodsCT scans of the knee in 0°, 30°, 60° flexion in the upright weight-bearing position and in 120° flexion upright without weight-bearing were obtained of 10 volunteers (mean age 33.7 ± 6.1 years; range 24-41) using a cone-beam extremity-CT. Two independent readers quantified tibiofemoral and patellofemoral rotation, tibial tuberosity-trochlear groove distance (TTTG) and patellofemoral distance. Tibiofemoral contact points were assessed in relation to the anteroposterior distance of the tibial plateau. Significant differences between degrees of flexion were sought using Wilcoxon signed-rank test (P < 0.05).
resultsWith higher degrees of flexion, internal tibiofemoral rotation increased (0°/120° flexion; mean, 0.5° ± 4.5/22.4° ± 7.6); external patellofemoral rotation decreased (10.6° ± 7.6/1.6° ± 4.2); TTTG decreased (11.1 mm ±3.7/-2.4 mm ±6.4) and patellofemoral distance decreased (38.7 mm ±3.0/21.0 mm ±7.0). The CP shifted posterior, more pronounced laterally. Significant differences were found for all measurements at all degrees of flexion (P = 0.005-0.037), except between 30° and 60°. ICC was almost perfect (0.80-0.99), except for the assessment of the CP (0.20-0.96).
conclusionKnee joint articulations change significantly during flexion using upright weight-bearing CT. Progressive internal tibiofemoral rotation leads to a decrease in the TTTG and a posterior shift of the contact points in higher degrees of flexion. This elucidates patellar malalignment predominantly close to extension and meniscal tears commonly affecting the posterior horns.
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