Patellar instability in children and adolescents

Chotel, Franck; Bérard, J; Raux, Sébastien

doi:10.1016/j.otsr.2013.06.014

Cited by 71 publications

(61 citation statements)

References 21 publications

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“…This mechanism of patellar dislocation is the most common in adolescents, and it can occur in patients with a normal anatomy. 37 Potential pathoanatomies underlying traumatic lateral patellar dislocations are more recently studied. Patients with a first-time traumatic lateral patellar dislocation were studied in this thesis.…”

Section: Etiologymentioning

confidence: 99%

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Morphology and Anatomic Patellar Instability Risk Factors in First-Time Traumatic Lateral Patellar Dislocations: A Prospective Magnetic Resonance Imaging Study in Skeletally Immature Children

et al. 2016

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Section: Etiologymentioning

confidence: 99%

“…For habitual dislocations, the patella dislocates in every cycle of knee flexion and extension. 22,37 There can also be voluntary or fixed / permanent dislocated patellas.…”

mentioning

confidence: 99%

Morphology and Anatomic Patellar Instability Risk Factors in First-Time Traumatic Lateral Patellar Dislocations: A Prospective Magnetic Resonance Imaging Study in Skeletally Immature Children

et al. 2016

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“…In the literature, the location of the TT related to the TW will migrate laterally following chronology [16,17]. Anatomically, the PT inserts on the TT to aid extension of the knee.…”

Section: Discussionmentioning

confidence: 99%

Can the Apex of Tibial Tubercle Represent the Insertion of Patellar Tendon in Measurement of Quadriceps Angles? Imaging Verification

Wu¹,

Wong²

2020

Preprint

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Background Clinical measurement of a quadriceps angle (Q-angle) has yet achieved consensus. The patellar stability is generally low despite that the tibial tubercle (TT) is fixed. The aim of this retrospective study was to verify whether the lower arm of a Q-angle (i.e. the patellar tendon [PT]) can be represented by the localization of TT. Methods The locations of the apex of TT and the center of PT in magnetic resonance imaging (MRI) were investigated in 100 consecutive young adult patients (50 men and 50 women; average, 27 years). The tibial width (TW), the distance from the apex of TT and the center of PT to the lateral edge of TW, and the PT width were measured. The ratios of the TT and PT to TW were compared statistically. Results The TW was 64 mm (62-66 mm). The apex of TT was 38% (37-39%) from the lateral edge of TW. The center of PT was 37% (36-38%) from the lateral edge of TW. Except the TW and PT width (both, p < 0.001), there was no statistical significance in all other comparisons between sexes ( p > 0.05). The correlation between the TT and PT in 100 patients was 0.84. There was statistical difference between the two parameters ( p = 0.02). Conclusion Although the center of PT is lateral to the apex of TT, the discrepancy is minimal (1% of TW, about 0.6 mm; or 3% of PT width). Clinically, using the TT to represent the insertion of PT may be reasonable.

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“…12,16,17 Patellar instability from congenital causes often presents after patients have learned how to walk. 18,19…”

Section: Patellofemoral Dysplasiamentioning

confidence: 99%

Diagnosis and Management of Traumatic Patellar Instability in the Pediatric Patient

DeFroda¹,

Gil²,

Boulos³

et al. 2017

Orthopedics

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Instability of the patella is a common cause of knee pain and dysfunction in pediatric and adolescent patients and can be due to several factors. Although some patients will recall a specific traumatic event others may not, requiring the diagnosis to be made on the basis of physical examination and imaging. Congenital dislocation and connective tissue disorders should also be considered, even in the setting of trauma. There are radiographic parameters that may identify causes of instability such as trochlear and patellar abnormalities, and magnetic resonance imaging can identify signs of trauma such as bony edema, loose osteochondral fragments, and increased tibial tubercle-trochlear groove distance. The first line of treatment for instability is most commonly nonoperative in nature; however, there are many options for operative management in the event of severe chondral injury or recurrent dislocation. Surgical management to best restore stability of the patellofemoral joint varies depending on the skeletal maturity of the patient and the source of instability (ligamentous, osteocartilaginous, or both). A combination of soft tissue, bony, and anatomic ligamentous repair or reconstruction is used to best augment patellar tracking and optimize patient outcome. [Orthopedics. 2017; 40(5):e749-e757.].

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Patellar instability in children and adolescents

Cited by 71 publications

References 21 publications

Morphology and Anatomic Patellar Instability Risk Factors in First-Time Traumatic Lateral Patellar Dislocations: A Prospective Magnetic Resonance Imaging Study in Skeletally Immature Children

Morphology and Anatomic Patellar Instability Risk Factors in First-Time Traumatic Lateral Patellar Dislocations: A Prospective Magnetic Resonance Imaging Study in Skeletally Immature Children

Can the Apex of Tibial Tubercle Represent the Insertion of Patellar Tendon in Measurement of Quadriceps Angles? Imaging Verification

Diagnosis and Management of Traumatic Patellar Instability in the Pediatric Patient

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