Radial Width of the Lateral Meniscus at the Popliteal Hiatus: Relevance to Saucerization of Discoid Lateral Menisci
| Autor: | Marc Tompkins, Jamison G. Gamble, Kevin G. Shea, James G. Gamble, Theodore J. Ganley, Abdalla B Abdalla, Charles M. Chan, Thomas Rauer, Molly G Meadows |
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| Přispěvatelé: | University of Zurich, Gamble, Jamison G, Gamble, James G |
| Rok vydání: | 2021 |
| Předmět: |
Discoid lateral meniscus
Adolescent Knee Joint Physical Therapy Sports Therapy and Rehabilitation 610 Medicine & health Hiatus Meniscus (anatomy) Menisci Tibial Arthroscopy 2732 Orthopedics and Sports Medicine medicine Humans Orthopedics and Sports Medicine 3612 Physical Therapy Sports Therapy and Rehabilitation Child Lateral meniscus Centimeter Normal anatomy business.industry Infant Anatomy 10021 Department of Trauma Surgery medicine.anatomical_structure Cross-Sectional Studies Child Preschool Joint Diseases business Cartilage Diseases |
| Zdroj: | The American journal of sports medicine. 50(1) |
| ISSN: | 1552-3365 |
| Popis: | Background: A discoid lateral meniscus (DLM) is a congenital anomaly of the knee in which the lateral meniscus has an “O” shape and contains irregular, abnormal collagenous tissue. A DLM can cause mechanical symptoms and pain. Treatment of a symptomatic DLM is arthroscopic saucerization to reshape the meniscus to a more normal contour. Enough tissue must be removed to eliminate mechanical symptoms but not too much to create instability. The residual width of the meniscus is crucial at the popliteus hiatus because here the peripheral rim is unattached at the capsule. Reports in the literature recommend a residual width of 6 to 8 mm. Purpose/Hypothesis: The purpose of this research was to determine the width of the lateral meniscus at the popliteal hiatus in normal specimens. Our null hypothesis was that a residual width of 6 to 8 mm will be sufficient to approximate normal anatomy. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We made direct measurements of the radial width of the lateral meniscus from the outer rim at the popliteal hiatus to the inner edge in 19 specimens (age, 2-120 months.) We measured one 4-year-old specimen with a bilateral complete DLM. We also measured 39 digital images of specimens (age, 1-132 months) using ImageJ. Finally, we made direct arthroscopic measurements of 8 skeletally mature specimens. Results: The average width of specimens Conclusion: We rejected our null hypothesis. Direct measurements suggest that a residual width of 6 to 8 mm is insufficient for children ≥8 years old. A width of at least a full centimeter approximates the normal for 8-year-olds and at least 15 mm for adolescents. |
| Databáze: | OpenAIRE |
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