Comparative study of magnetic resonance imaging (MRI) parameters in a Southeast Asian population with symptomatic patellofemoral instability

Lim, Wei‐Wen; Lim, Mui-Hong

doi:10.1016/j.knee.2016.04.010

Cited by 5 publications

(6 citation statements)

References 15 publications

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“…3,5,12,25,30,35,62,68,81 Three studies reported 4 unique interobserver ICCs for sulcus angle, and all of these values were between 0.75 and 0.9. 46,48,69 The pooled mean sulcus angle among patients with instability was 158.5° (95% CI, 145.8°-171.08°) and among controls was 142.1° (95% CI, 135.4°-148.8°) ( P = .02) (Figure 3).…”

Section: Resultsmentioning

confidence: 99%

“…{{ Five studies reported the Blackburne-Peel ratio. 7,48,78,89,116 Three of 8 studies reported 4 separate interobserver ICC values >0.9 for the Insall-Salvati ratio, 13,68,69 while zero of 7 studies reported an interobserver ICC >0.9 for the Caton-Deschamps index. The Caton-Deschamps index and Blackburne-Peel ratio interobserver ICC's were excellent or good in just 43% and 40% of studies, respectively.…”

Section: Patellar Heightmentioning

confidence: 99%

“…0.9. 46,48,69 The pooled mean sulcus angle among patients with instability was 158.5 (95% CI, 145.8 -171.08 ) and among controls was 142.1 (95% CI, 135.4 -148.8 ) (P ¼ .02) (Figure 3).…”

Section: Trochlear Morphologymentioning

confidence: 99%

“… ∥ References 2 –8, 10 –13, 16, 17, 19, 21 –23, 25 –32, 34 –37, 39 –58, 61, 62, 66 –70, 72 –75, 77 –85, 88 –…”

mentioning

confidence: 99%

“… ∥∥ References 3, 5, 7, 12, 13, 25, 30, 32, 47, 50, 53, 62, 69, 70, 78, 80 –82, 84, 89, 102, 109, 116, 119, 121, 122. …”

mentioning

confidence: 99%

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Radiologic Measurements in the Assessment of Patellar Instability: A Systematic Review and Meta-analysis

White

Otlans

Horan

et al. 2021

Orthopaedic Journal of Sports Medicine

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Background: Numerous diagnostic imaging measurements related to patellar instability have been evaluated in the literature; however, little has been done to compare these findings across multiple studies. Purpose: To review the different imaging measurements used to evaluate patellar instability and to assess the prevalence of each measure and its utility in predicting instability. We focused on reliability across imaging modalities and between patients with and without patellar instability. Study Design: Systematic review; Level of evidence, 4. Methods: We performed a systematic review of the literature using the PubMed, SCOPUS, and Cochrane databases. Each database was searched for variations of the terms “patellar instability,” “patellar dislocation,” “trochlear dysplasia,” “radiographic measures,” “computed tomography,” and “magnetic resonance imaging.” Studies were included if they were published after May 1, 2009, and before May 1, 2019. A meta-analysis using a random effects model was performed on several measurements, comparing instability and control groups to generate pooled values. Results: A total of 813 articles were identified, and 96 articles comprising 7912 patients and 106 unique metrics were included in the analysis. The mean patient age was 23.1 years (95% CI, 21.1-24.5), and 41% were male. The tibial tubercle–trochlear groove (TT-TG) distance was the most frequently included metric (59 studies), followed by the Insall-Salvati ratio and Caton-Deschamps index (both 26 studies). The interobserver intraclass correlation coefficients were excellent or good for the TT-TG distance and Insall-Salvati ratio in 100% of studies reporting them; however, for the Caton-Deschamps index and Blackburne-Peel ratio, they were excellent or good in only 43% and 40% of studies. Pooled magnetic resonance imaging values for TT-TG distance ( P < .01), Insall-Salvati ratio ( P = .01), and femoral sulcus angle ( P = .02) were significantly different between the instability and control groups. Values for tibial tubercle–posterior cruciate ligament distance ( P = .36) and Caton-Deschamps index ( P = .09) were not significantly different between groups. Conclusion: The most commonly reported measurements for evaluating patellar instability assessed patellar tracking and trochlear morphology. The TT-TG distance was the most common measurement and was greater in the patellar instability group as compared with the control group. In addition, the TT-TG, tibial tubercle–posterior cruciate ligament, and patellar tendon–trochlear groove distances were highly reproducible measurements for patellar tracking, and the Insall-Salvati ratio had superior reproducibility for assessing patellar height.

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Section: Resultsmentioning

confidence: 99%

Section: Patellar Heightmentioning

confidence: 99%

“…0.9. 46,48,69 The pooled mean sulcus angle among patients with instability was 158.5 (95% CI, 145.8 -171.08 ) and among controls was 142.1 (95% CI, 135.4 -148.8 ) (P ¼ .02) (Figure 3).…”

Section: Trochlear Morphologymentioning

confidence: 99%

“… ∥ References 2 –8, 10 –13, 16, 17, 19, 21 –23, 25 –32, 34 –37, 39 –58, 61, 62, 66 –70, 72 –75, 77 –85, 88 –…”

mentioning

confidence: 99%

“… ∥∥ References 3, 5, 7, 12, 13, 25, 30, 32, 47, 50, 53, 62, 69, 70, 78, 80 –82, 84, 89, 102, 109, 116, 119, 121, 122. …”

mentioning

confidence: 99%

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Radiologic Measurements in the Assessment of Patellar Instability: A Systematic Review and Meta-analysis

White

Otlans

Horan

et al. 2021

Orthopaedic Journal of Sports Medicine

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Application of a machine learning and optimization method to predict patellofemoral instability risk factors in children and adolescents

Kwak,

Ko,

Kwon

et al. 2024

Knee surg. sports traumatol. arthrosc.

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PurposeConservative treatment remains the standard approach for first‐time patellar dislocations. While risk factors for patellofemoral instability, a common paediatric injury, are well‐established in adults, data concerning the progression of paediatric recurrent patellar dislocation remain scarce. A reproducible method was developed to quantitatively assess the patellofemoral morphology and anatomic risk factors in paediatric patients using magnetic resonance imaging (MRI) and machine learning analysis.MethodsData were analyzed from a retrospective review (2005–2022) of paediatric patients diagnosed with acute lateral patellar dislocation (54 patients) who underwent MRI and were compared with an age‐based control group (54 patients). Patellofemoral, tibial, tibiofemoral and patellar height parameters were measured. Differences between groups were analyzed with respect to MRI parameters. The potential diagnostic utility of the parameters was assessed via machine learning and genetic algorithm analyses.ResultsSignificant differences were observed between the two groups in six patellofemoral morphological parameters. Regarding patellar height morphological parameters, all methods exhibited significant between‐group differences. Among the tibia and tibiofemoral morphological parameters, only the tibial tubercle–trochlear groove distance exhibited significant differences between the two groups. No sex‐related differences were present. Significant variations were observed in patellar height parameters, particularly in the Koshino–Sugimoto (KS) index, which had the highest area under the curve (AUC: 0.87). Using genetic algorithms and logistic regression, our model excelled with seven key independent variables.ConclusionKS index and Wiberg index had the strongest association with lateral patellar dislocation. An optimized logistic regression model achieved an AUC of 0.934. Such performance is considered clinically relevant, indicating the model's effectiveness for the intended application.Level of EvidenceLevel Ⅲ.

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Sulcus Angle, Trochlear Depth, and Dejour’s Classification Can Be Reliably Applied To Evaluate Trochlear Dysplasia: A Systematic Review of Radiological Measurements

Saccomanno

Maggini²,

Vaisitti³

et al. 2023

Arthroscopy: The Journal of Arthroscopic & Related Surgery

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Comparative study of magnetic resonance imaging (MRI) parameters in a Southeast Asian population with symptomatic patellofemoral instability

Cited by 5 publications

References 15 publications

Radiologic Measurements in the Assessment of Patellar Instability: A Systematic Review and Meta-analysis

Radiologic Measurements in the Assessment of Patellar Instability: A Systematic Review and Meta-analysis

Application of a machine learning and optimization method to predict patellofemoral instability risk factors in children and adolescents

Sulcus Angle, Trochlear Depth, and Dejour’s Classification Can Be Reliably Applied To Evaluate Trochlear Dysplasia: A Systematic Review of Radiological Measurements

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