Alteration of patellar tendon morphology in patellofemoral instability (trochlear dysplasia).
Dislocation
Patellar tendon
Patellofemoral instability
Trochlear dysplasia
Journal
Journal of clinical orthopaedics and trauma
ISSN: 0976-5662
Titre abrégé: J Clin Orthop Trauma
Pays: India
ID NLM: 101559469
Informations de publication
Date de publication:
Mar 2022
Mar 2022
Historique:
received:
23
11
2021
revised:
25
01
2022
accepted:
30
01
2022
entrez:
17
2
2022
pubmed:
18
2
2022
medline:
18
2
2022
Statut:
epublish
Résumé
Trochlear Dysplasia (TD) is a condition that is characterized by the presence of an abnormally shaped trochlear groove, which hinders the patellofemoral joint (PFJ) stability. PFJ stability is determined by static and dynamic structures around the knee joint. We analysed whether the patellar tendon morphology is altered in patients with patellofemoral instability in Trochlear Dysplasia (TD). Magnetic Resonance Imaging (MRI) studies for 50 consecutive knees with TD and 50 consecutive knees with normal PFJ morphology were obtained for evaluation. For each MRI study, the cross-sectional area (CSA) of the medial and lateral components of the patellar tendon was measured and used to calculate the cross-sectional area ratio (CSAR) by two readers. There was a statistically significant difference in the CSAR of the lateral-to-medial components of the patellar tendon between knees with normal PFJ morphology and knees with TD (one way ANOVA, F (4,95) = 7.743, p < 0.001). Pairwise comparisons amongst the Dejour subtypes of TD, revealed a statistically significance difference (p < 0.05) in the CSAR ratio between patients with normal PFJ morphology, and patients with type A (p = 0.007) and type C, TD. There was moderate correlation between the readers on Intraclass Correlation Coefficient (ICC) analysis (ICC- 0.7). Our findings reveals hypertrophy of the medial part of the patellar tendon in patients with PFJ instability and TD. These differences could reflect the dynamic compensatory changes occurring at the PFJ to counteract the laterally directed instability vectors found in this condition.
Identifiants
pubmed: 35174051
doi: 10.1016/j.jcot.2022.101786
pii: S0976-5662(22)00022-4
pmc: PMC8829128
doi:
Types de publication
Journal Article
Langues
eng
Pagination
101786Informations de copyright
© 2022 Delhi Orthopedic Association. All rights reserved.
Déclaration de conflit d'intérêts
No conflicts of interest to declare.
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