Patterns of Articular Cartilage Thickness in Pediatric and Adolescent Knees: A Magnetic Resonance Imaging-Based Study.

Autor:	Sidharthan S; Divisions of Pediatric Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, U.S.A.; David Geffen School of Medicine at UCLA, Los Angeles, California, U.S.A., Yau A; Divisions of Pediatric Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, U.S.A., Almeida BA; Divisions of Pediatric Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, U.S.A., Shea KG; Stanford University School of Medicine, Stanford, California, U.S.A., Greditzer HG 4th; Radiology & Imaging, Hospital for Special Surgery, New York, New York, U.S.A., Jones KJ; David Geffen School of Medicine at UCLA, Los Angeles, California, U.S.A., Fabricant PD; Divisions of Pediatric Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, U.S.A.
Jazyk:	angličtina
Zdroj:	Arthroscopy, sports medicine, and rehabilitation [Arthrosc Sports Med Rehabil] 2021 Feb 02; Vol. 3 (2), pp. e381-e390. Date of Electronic Publication: 2021 Feb 02 (Print Publication: 2021).
DOI:	10.1016/j.asmr.2020.09.029
Abstrakt:	Purpose: To establish normative values for articular cartilage thickness in pediatric and adolescent knees using magnetic resonance imaging (MRI) and investigate for any associations with age and skeletal maturity. Methods: MRI scans were analyzed in patients 7 to 18 years old without osteochondral lesions, chondral wear/pathology, intra-articular fractures, or history of knee surgery. Measurements of articular cartilage thickness at the patella (medial facet, lateral facet, median ridge), femur (medial condyle, lateral condyle, lateral trochlea), and tibia (medial plateau, lateral plateau) were made on axial, coronal, and sagittal MRI. Descriptive statistics were used to calculate mean cartilage thickness by age and sex. Analysis of variance with repeated measures, analysis of covariance, independent samples t test, and linear regression were performed to determine differences in mean cartilage thickness by anatomic location, sex, physeal status, and age, respectively. Results: A total of 240 knee MRI scans were included. Articular cartilage was thickest at the patella and did not vary with age or skeletal maturity. On the femur, articular cartilage was thickest at the lateral trochlea with mean cartilage thickness of 4.4 ± 1.4 mm in male patients and 3.6 ± 1.3 mm in female patients ( P < .001). Patients with open distal femoral physes had significantly thicker cartilage at the medial femoral condyle, lateral femoral condyle, and lateral trochlea compared to patients with closing/closed physes (P < .001). Linear regression analysis revealed a significant inverse association between cartilage thickness at the femur and age. Conclusions: In pediatric and adolescent knees, articular cartilage is thickest at the patella, where it does not strongly correlate with age. In contrast, there is a strong inverse association between increasing age and articular cartilage thickness of the distal femoral condyles. Clinical Relevance: The longitudinal reference data presented in this study can aid in pre-operative interpretation of knee cartilage under pathologic conditions in pediatric and adolescent patients. (© 2020 by the Arthroscopy Association of North America. Published by Elsevier Inc.)
Databáze:	MEDLINE
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