Evaluation of patella alta using MRI measurements in adolescents

Yılmaz, Barış; Özdemir, Güzelali; Şirin, Evrim; Çiçek, Esin Derin; Anil, B S; Bulbun, Goncagül

doi:10.4103/ijri.ijri_222_16

Cited by 10 publications

(8 citation statements)

References 18 publications

(25 reference statements)

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“…To determine ISR of knees, baseline sagittal MRI (IW fat-saturated TSE sequences, taken while knees were fully extended) were evaluated by two musculoskeletal fellowship trained (CS and MH) and one board-certified (AP) radiologists, with more than 3-years of experience in assessing knee MRI, who were blinded to the outcomes of subjects. The intra-rater and inter-rater reliability of moderate to almost perfect for MRI-derived ISR have been reported using weighted kappa method 16 .…”

Section: Insall-salvati Ratio Measurementmentioning

confidence: 99%

Association of patella alta with worsening of patellofemoral osteoarthritis-related structural damage: data from the Osteoarthritis Initiative

Haj‐Mirzaian

Guermazi

Pishgar

et al. 2019

Osteoarthritis and Cartilage

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s u m m a r yObjectives: To determine the association between Insall-Salvati ratio (ISR), a measure of patella alta, and worsening of Magnetic Resonance Imaging (MRI)-based osteoarthritis (OA)-related patellofemoral joint structural damages over 24-month in participants of the Osteoarthritis Initiative (OAI). Design: Using weighted random sampling method, we selected a sample of 500 knees (from 1,677 knees with available baseline and 24-months MRI OA Knee Score (MOAKS) measurements), which is OAIrepresentative regarding knee OA-related factors (i.e., baseline age, sex, body mass index (BMI), and radiographic KellgreneLawrence grading). The ISR was measured in all enrolled knees using baseline sagittal 3T-MRI plane by three radiologists. Baseline and 24-month MOAKS variables for patellofemoral bone marrow lesions (BMLs), cartilage damages, and osteophytes were extracted, and the associations between ISR and 24-month worsening of these 3T-MRI features were evaluated using multivariable regression models. After computing receiver operating characteristic curves, the optimal cutoff point of ISR for indicating worsening of patellofemoral OA was determined. P-values were adjusted for multiple comparisons and false discovery rate (FDR) adjusted P-values were reported. Results: In this longitudinal analysis, 24-month worsening of BML (odds ratio [OR] (95% confidence interval [95% CI]):11.18 (3.35e39.6), adjusted-p-value:<0.001) and cartilage scores (OR:7.39 (1.62e34.71), adjusted-p-value:0.042) in lateral patella was associated with higher baseline ISR. However, higher ISR was not statistically associated with medial patellar or medial and lateral trochlear BML or cartilage scores worsening. We determined the optimal cutoff point of ISR!1.14 (95% CI: 1.083e1.284) for predicting lateral patellofemoral OA-related structural damages worsening over 24-months (sensitivity:73.73%; specificity: 66.67%). Conclusions: Given the uncertainly surrounding the results, our overall findings suggest that ISR could be considered as a predictor of lateral patellofemoral OA-related structural damages worsening with the optimal cutoff point of !1.14 using knee sagittal MRI measurements.

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Section: Insall-salvati Ratio Measurementmentioning

confidence: 99%

Association of patella alta with worsening of patellofemoral osteoarthritis-related structural damage: data from the Osteoarthritis Initiative

Haj‐Mirzaian

Guermazi

Pishgar

et al. 2019

Osteoarthritis and Cartilage

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“…The IS index is the ratio of the patellar tendon length extending between the patella distal pole and the tuberositas tibia to the maximum length of the patella extending between the distal and proximal poles. 14,15 The BP index is the ratio of the perpendicular distance of the distal pole of the patella to the plateau articular surface to the length of the patellar articular surface. 14,15 The CD index is the ratio of the distance between the distal pole of the patella and the plateau anterosuperior to the length of the patellar joint surface.…”

Section: Methodsmentioning

confidence: 99%

“…14,15 The BP index is the ratio of the perpendicular distance of the distal pole of the patella to the plateau articular surface to the length of the patellar articular surface. 14,15 The CD index is the ratio of the distance between the distal pole of the patella and the plateau anterosuperior to the length of the patellar joint surface. 14,15 The MIS index is the ratio of the patellar tendon length extending between the distal pole of the patellar articular surface and the tuberositas tibia to the patellar articular surface length.…”

Section: Methodsmentioning

confidence: 99%

“…14,15 The CD index is the ratio of the distance between the distal pole of the patella and the plateau anterosuperior to the length of the patellar joint surface. 14,15 The MIS index is the ratio of the patellar tendon length extending between the distal pole of the patellar articular surface and the tuberositas tibia to the patellar articular surface length. 14,15 The manner in which the measurements were carried out on an operated knee radiograph is shown in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

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Patellar height changes after treatment of tibia plateau fractures

Doğan¹,

Çulcu²,

Doğan³

2023

SMJ

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Objectives: To determine the impact of tibial plateau fractures on patellar height and the factors affecting this impact.Methods: A total of 40 patients treated for plateau fractures between 2017-2021 were evaluated in this retrospective prognostic study. The patient group consisted of lateral radiographs of the operated knees, whereas the control group consisted of lateral radiographs of the healthy sides of the same patients. Insall-Salvati, Caton-Deschamps, Blackburne-Peel, and modified Insall-Salvati indices were measured for both groups. In addition, Schaztker and Luo classifications, as well as the demographic profiles of the patients, were analyzed. Original ArticleResults: There was no significant difference between the groups in terms of patellar height indices )p>0.05(. A significant relationship was found between the Insall-Salvati )p=0.046( and Blackburne-Pell )p=0.011( indices and Luo classification. Post hoc analyses revealed a significant relationship between the Insall-Salvati index and "One Column" fractures and between the Blackburne-Peel index and "Two Column" fractures. Conclusion:Long-term functions of tibial plateau fractures should be evaluated not only with a painless range of motion but also with patellar height. It should be noted that the Luo classification, which evaluates the plateau 3-dimensionally, may be associated with changes in postoperative patellar height values.

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“…Various indices have been defined for measuring the height of the patella on lateral knee radiographs (8)(9)(10)(11). These methods have both positive and negative aspects.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of age group and sex differences in the measurement of patellar height of pediatric knee in a Korean population

Kwak

Park²,

Huser³

et al. 2023

Front. Pediatr.

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IntroductionVarious methods based on bony landmarks are used to determine patellar height. This study analyzed five methods for patellar height measurement on lateral knee radiographs, namely, the Insall–Salvati, Koshino–Sugimoto, Blackburne–Peel, modified Insall–Salvati, and Caton–Deschamps methods.MethodsOverall, 425 pediatric participants (221 males, 204 females; age range 5–18 years) were included and were divided equally into three age groups (A, 5–10 years; B, 11–13 years; and C, 13–18 years). For the comparison of the applicability of each method, the applicable probabilities for each age group and sex-based differences were analyzed using logistic regression techniques. Intra-rater reliability and inter-rater variability were analyzed by two trained raters.ResultsThe Koshino–Sugimoto method was applicable to all patients. The 80% applicable age of female patients was lower than that of male patients for the Blackburne–Peel (male = 11.9, female = 11) and Caton–Deschamps (male = 11.9, female = 11.1) methods. However, in the Insall–Salvati (male = 12, female = 12.1) and modified Insall–Salvati (male = 12.6, female = 13.1) methods, the 80% applicable age in male patients was lower than that in female patients. The Koshino–Sugimoto method showed the highest variability in group B, while the Insall–Salvati showed the highest variability in group C. In terms of intra-observer reliability, the Caton–Deschamps method showed the same reliability as the Insall–Salvati method, in group C.ConclusionsOur results demonstrated differences in the reliability, variability, and applicability of patellar height measurement methods according to age group. The applicability of patellar height measurement methods also differed according to sex. Therefore, based on age group and sex, different methods should be used for patellar height measurement in pediatric patients.

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Evaluation of patella alta using MRI measurements in adolescents

Cited by 10 publications

References 18 publications

Association of patella alta with worsening of patellofemoral osteoarthritis-related structural damage: data from the Osteoarthritis Initiative

Association of patella alta with worsening of patellofemoral osteoarthritis-related structural damage: data from the Osteoarthritis Initiative

Patellar height changes after treatment of tibia plateau fractures

Evaluation of age group and sex differences in the measurement of patellar height of pediatric knee in a Korean population

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