Chondral and osteochondral injuries associated with acute patellar dislocation

Nomura, Eiki; Inoue, Motoyasu; Kurimura, Makoto

doi:10.1016/s0749-8063(03)00401-8

Cited by 267 publications

(193 citation statements)

References 10 publications

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“…In this study, majority (14 (70%) of 20 patients ) of the first-time LPD patients sustained cartilage injuries located in the PF joint and visible in primary MRI, which corresponds to the findings in previous studies 5,10,19,22,24 . To our knowledge there are no studies of the long-term prognosis of cartilage deterioration after conservatively treated single first-time or infrequently repeated traumatic LPD.…”

Section: Discussionsupporting

confidence: 90%

“…Bone bruise in the medial patellar facet and lateral femoral condyle, and medial patellofemoral ligament (MPFL) tear confirm the diagnosis of traumatic LPD 5,12,22 . Concomitant cartilage injury in the patellofemoral (PF) joint after traumatic LPD occurs in 71% to 95% of patients 5,10,19,22,24 . Osteochondral fractures of the PF joint are seen in 25% of LPD patients 19 .…”

Section: Introductionmentioning

confidence: 99%

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Traumatic Patellar Dislocation and Cartilage Injury: A Follow-up Study of Long-Term Cartilage Deterioration

Salonen

Magga

Sillanpää³

et al. 2017

Am J Sports Med

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Traumatic Patellar Dislocation and Cartilage Injury: A Follow-up Study of Long-Term Cartilage Deterioration

Salonen

Magga

Sillanpää³

et al. 2017

Am J Sports Med

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“…Many of these studies assessed the PF dysfunction but not specifically relate the observed retropatellar cartilage changes to the kneeling ability. Certain studies described the damage in the medial facet [14,[19][20][21][22][23]; the lateral facet [14,19,20,[22][23][24][25][26][27][28]; the central patella [22,23,25]; the medial femoral condyle [23,24] and the lateral femoral condyle [22][23][24]. These studies reported that the lateral and medial facets could be damaged with malalignment of the patella.…”

Section: Discussionmentioning

confidence: 99%

Retropatellar Cartilage Morphology and Kneeling Ability: Cartilage Wear and Kneeling Function of TKA Patients

Benfayed¹,

Moran²,

Simpson³

et al. 2017

Orthop Muscular Syst

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Objectives: To investigate the retro-patellar cartilage (RPC) morphology and the patterns of retropatellar cartilage wear as well as the patients' kneeling ability to determine whether the kneeling ability is related to the area and pattern of wear in the cartilage.Methods: 30 patients undergoing primary TKAs participated in this study. The patients were seen in the preoperative assessment clinics and consented to allow intraoperative photographing of their retro patellar cartilage. These photographs were used to determine the area and pattern of wear by using Image J software. The total area of the retropatellar cartilage and the area of wear was measured and used to calculate the percentage of RPC wear. The percentages of retro patellar cartilage wear for all the patients were linked with their kneeling ability before the surgery.Results: 15 patients (cases numbered 1-15, termed group A) were able to kneel, and 15 patients (cases numbered 16-30, termed group B) were unable to kneel. The % of wears for all RPC images measured 3 times with a week interval and the average of the records in the 1st, 2nd, and 3rd week recorded for statistical analysis. Mean % of RPC wears in-group A was (15%), and in-group B was (36%). Intra-Rater and Inter-Rater Reliability statistically assessed by using Intraclass Correlation Coefficient. Patients who able to kneel (Group A) had normal RPC superior surfaces with no damages in comparison with patients who unable to kneel (Group B) who had damaged superior surfaces medially and laterally. All the RPC surfaces (Superior, Middle and Inferior) were damaged in Group B patients (Unable to kneel). Conclusion:No direct association was found between the retropatellar cartilage damage and the kneeling ability. The most damaged areas were found in the middle and lower thirds of retropatellar cartilage.

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“…However, magnetic resonance imaging and arthroscopic studies have reported that up to 95% of acute traumatic first-time lateral patellar dislocations were associated with osteochondral and/or chondral injuries (which may be subclinical). [4][5][6] There are theoretical benefits to avoiding forceful manipulation of the dislocated patella during reduction, in terms of further trauma, pain and analgesia/sedation needed. This is especially the case when excessive force is used in the pediatric population, or reduction is done by inexperienced physicians.…”

Section: Potential Benefits Of the Novel Methodsmentioning

confidence: 99%

A novel method of reduction for first-time acute lateral patellar dislocations in children and adolescents

Ong

2015

CJEM

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Five pediatric patients with acute traumatic "first-time" lateral patellar dislocations were successfully reduced using a novel, atraumatic, and simple technique. Uniquely, unlike the traditional method of patellar reduction, the patellar dislocations were reduced without any direct manipulation of the patella. In co-operative patients, no analgesia was required. Further validation of the reproducibility of the effectiveness of this method for successful patellar reduction in pediatric and adult populations are required. RÉSUMÉCinq jeunes patients ont subi, pour la première fois, une luxation latérale, aiguë et traumatique de la rotule, réduite grâce à une nouvelle technique simple et non traumatique de remise en place. Étonnamment et contrairement à l'ancienne technique, la nouvelle façon de faire n'a nécessité aucune manipulation directe de la rotule. Chez les patients en état de coopérer, on n'a même pas eu besoin de recourir à l'analgésie. Toutefois, il faut poursuivre les études afin de valider l'efficacité reproductible de cette technique de réduction des luxations de la rotule chez les enfants et les adultes.

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Chondral and osteochondral injuries associated with acute patellar dislocation

Cited by 267 publications

References 10 publications

Traumatic Patellar Dislocation and Cartilage Injury: A Follow-up Study of Long-Term Cartilage Deterioration

Traumatic Patellar Dislocation and Cartilage Injury: A Follow-up Study of Long-Term Cartilage Deterioration

Retropatellar Cartilage Morphology and Kneeling Ability: Cartilage Wear and Kneeling Function of TKA Patients

A novel method of reduction for first-time acute lateral patellar dislocations in children and adolescents

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