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The lateral patellar retinaculum defect: anatomical study using ultrasound
Antoine Moraux1,2, Stefano Bianchi3, François Tassery4
1Imagerie Médicale Jacquemars Giélée, 73 rue Jacquemars Giélée, 59000, Lille, France. amoraux@yahoo.com.
Skeletal Radiology
|March 28, 2019
Summary
Ultrasound can precisely identify a focal defect in the lateral patellar retinaculum (LPR), a common finding in healthy individuals. This anatomical variation, related to perforating vessels, is not considered a pathological condition.
Area of Science:
- Medical imaging
- Anatomy
- Musculoskeletal radiology
Background:
- The lateral patellar retinaculum (LPR) is a key anatomical structure.
- Understanding its variations is crucial for accurate diagnosis.
Purpose of the Study:
- To assess the capability of ultrasound in precisely evaluating focal defects at the LPR.
- To determine the anatomical significance and characteristics of these LPR defects.
Main Methods:
- High-resolution ultrasound examination of 96 knees in 48 healthy adult volunteers.
- Analysis of LPR defect dimensions, location, and relationship to adjacent structures.
- Correlation with cadaveric specimen dissection.
Main Results:
- Ultrasound consistently identified a focal LPR defect in the study population.
- The mean defect diameter was 2.4 mm, located near the patellar tendon.
- Dissection revealed perforating vessels originating from the peripatellar anastomotic ring passing through the defect.
Conclusions:
- Ultrasonography is effective in depicting focal defects of the LPR.
- Reproducible anatomical landmarks for LPR defect detection were established.
- The LPR defect is likely a normal anatomical variant, not a pathological finding.
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