ArticleArchives of orthopaedic and trauma surgery2017
The measurement of medial knee gap width using ultrasound.
Article in Archives of orthopaedic and trauma surgery, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.
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Who cites it
11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- Imaging of the medial collateral ligament of the knee: a systematic review.Archives of orthopaedic and trauma surgery · 2022Pooled it
- Ineffectiveness of lateral-wedge insoles on the improvement of pain and function for medial knee osteoarthritis: a meta-analysis of controlled randomized trials.Archives of orthopaedic and trauma surgery · 2018Pooled it
- Relative and absolute reliability of medial knee joint space width measurement using ultrasound imaging during valgus stress testing.PloS one · 2026Article
- Dynamic ultrasound enables quantitative assessment of medial knee instability: A scoping review.Journal of experimental orthopaedics · 2026Review
- Ultrasound can assess soft tissue laxity in osteoarthritic knees and after total knee arthroplasty.Journal of experimental orthopaedics · 2025Article
- Ultrasound-based bone tracking using cross-correlation enables dynamic measurements of knee kinematics during clinical assessments.Journal of experimental orthopaedics · 2024Article
- Evaluation of the knee joint with ultrasound and magnetic resonance imaging.Journal of ultrasonography · 2023Article
- Dynamic Ultrasound Can Accurately Quantify Severity of Medial Knee Injury: A Cadaveric Study.Arthroscopy, sports medicine, and rehabilitation · 2022Article
- Ultrasound-based evaluation revealed reliable postoperative knee stability after combined acute ACL and MCL injuries.Journal of experimental orthopaedics · 2021Article
- Comprehensive Assessment of Medial Knee Joint Instability by Valgus Stress MRI.Diagnostics (Basel, Switzerland) · 2021Article
- Ultrasound-based examination of the medial ligament complex shows gender- and age-related differences in laxity.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
Abstract
introductionMedial knee instability is a key clinical parameter for assessing ligament injury and arthroplasty success, but current methods for measuring stability are typically either qualitative or involve ionizing radiation. The purpose of this study was to perform a preliminary analysis of whether ultrasound (US) could be used as an alternate approach for quantifying medial instability by comparing an US method with an approach mimicking the current gold standard fluoroscopy method. MATERIALS AND
methodsUS data from the medial knee were collected, while cadaveric lower limbs (n = 8) were loaded in valgus (10 Nm). During post-processing, the US gap width was measured by identifying the medial edges of the femur and tibia and computing the gap width between these points. For comparison, mimicked fluoroscopy (mFluoro) images were created from specimen-specific bone models, developed from segmented CT scans, and from kinematic data collected during testing. Then, gap width was measured in the mFluoro images based on two different published approaches with gap width measured either at the most medial or at the most distal aspect of the femur.
resultsGap width increased significantly with loading (p < 0.001), and there were no significant differences between the US method (unloaded: 8.7 ± 2.4 mm, loaded: 10.7 ± 2.2 mm) and the mFluoro method that measured gap width at the medial femur. In terms of the change in gap width with load, no correlation with the change in abduction angle was observed, with no correlation between the various methods. Inter-rater reliability for the US method was high (0.899-0.952).
conclusionsUltrasound shows promise as a suitable alternative for quantifying medial instability without radiation exposure. However, the outstanding limitations of existing approaches and lack of true ground-truth data require that further validation work is necessary to better understand the clinical viability of an US approach for measuring medial knee gap width.
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