Long-term follow-up of a patient cohort with Legg–Calvé–Perthes disease

Froberg, Lonnie; Christensen, Finn Kjær; Pedersen, Niels Wisbech; Overgaard, Søren

doi:10.1097/bpb.0b013e3283474268

Cited by 18 publications

(9 citation statements)

References 23 publications

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“…Acetabular changes similar to development dysplasia often accompany femoral remodeling 3,6 . In some cases, secondary arthritis ensues regardless of management 3,7,8 . As an adult, surgical interventions such as osteotomy or total hip arthroplasty are often considered.…”

Section: Introductionmentioning

confidence: 95%

Treatment of Arthritis Associated With Legg–Calve–Perthes Disease With Modular Total Hip Arthroplasty

Seufert

McGrory

2015

The Journal of Arthroplasty

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Section: Introductionmentioning

confidence: 95%

Treatment of Arthritis Associated With Legg–Calve–Perthes Disease With Modular Total Hip Arthroplasty

Seufert

McGrory

2015

The Journal of Arthroplasty

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“…2004a , 2004b ), there seems to exist only 1 later study that has investigated this association (Froberg et al. 2011 ). Thus, our second aim was to assess the prognostic value of the modified lateral pillar classification and evaluate whether it was a better predictor compared with the Catterall and the original lateral pillar classifications.…”

mentioning

confidence: 99%

Radiographic classifications in Perthes disease

et al. 2017

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Background and purposeDifferent radiographic classifications have been proposed for prediction of outcome in Perthes disease. We assessed whether the modified lateral pillar classification would provide more reliable interobserver agreement and prognostic value compared with the original lateral pillar classification and the Catterall classification.Patients and methods42 patients (38 boys) with Perthes disease were included in the interobserver study. Their mean age at diagnosis was 6.5 (3–11) years. 5 observers classified the radiographs in 2 separate sessions according to the Catterall classification, the original and the modified lateral pillar classifications. Interobserver agreement was analysed using weighted kappa statistics. We assessed the associations between the classifications and femoral head sphericity at 5-year follow-up in 37 non-operatively treated patients in a crosstable analysis (Gamma statistics for ordinal variables, γ).ResultsThe original lateral pillar and Catterall classifications showed moderate interobserver agreement (kappa 0.49 and 0.43, respectively) while the modified lateral pillar classification had fair agreement (kappa 0.40). The original lateral pillar classification was strongly associated with the 5-year radiographic outcome, with a mean γ correlation coefficient of 0.75 (95% CI: 0.61–0.95) among the 5 observers. The modified lateral pillar and Catterall classifications showed moderate associations (mean γ correlation coefficient 0.55 [95% CI: 0.38–0.66] and 0.64 [95% CI: 0.57–0.72], respectively).InterpretationThe Catterall classification and the original lateral pillar classification had sufficient interobserver agreement and association to late radiographic outcome to be suitable for clinical use. Adding the borderline B/C group did not increase the interobserver agreement or prognostic value of the original lateral pillar classification.

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“…Legg-Calvé-Perthes disease (LCPD) is an idiopathic osteonecrosis of the capital femoral epiphysis in childhood that results in deformity of the proximal femur and acetabulum in 74% to 80% of all cases [10,26]. The proximal femur typically presents with a mushroom-shaped aspherical femoral head, a short femoral neck, and a high-riding greater trochanter [26].…”

Section: Introductionmentioning

confidence: 99%

LCPD: Reduced Range of Motion Resulting From Extra- and Intraarticular Impingement

Tannast

Hanke

Ecker

et al. 2012

Clinical Orthopaedics &Amp; Related Research

104

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Background Legg-Calvé-Perthes disease (LCPD) often results in a deformity that can be considered as a complex form of femoroacetabular impingement (FAI). Improved preoperative characterization of the FAI problem based on a noninvasive three-dimensional computer analysis may help to plan the appropriate operative treatment. Questions/purposes We asked whether the location of impingement zones, the presence of additional extraarticular impingement, and the resulting ROM differ between hips with LCPD and normal hips or hips with FAI. Methods We used a CT-based virtual dynamic motion analysis based on a motion algorithm to simulate the individual motion for 13 hips with LCPD, 22 hips with FAI, and 27 normal hips. We then determined the motion and impingement pattern of each hip for the anterior (flexion, adduction, internal rotation) and the posterior impingement tests (extension, adduction, external rotation). Results The location of impingement zones in hips with LCPD differed compared with the FAI/normal groups. Intra-and extraarticular impingement was more frequent in LCPD (79% and 86%, respectively) compared with normal (15%, 15%) and FAI hips (36%, 14%). Hips with LCPD had decreased amplitude for all hip motions (flexion, extension, abduction, adduction, internal and external rotation) compared with FAI or normal. Conclusions Hips with LCPD show a decreased ROM as a result of a higher prevalence of intra-and extraarticular FAI. Noninvasive assessment of impingement characteristics in hips with LCPD may be helpful in the future for establishment of a surgical plan.

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Long-term follow-up of a patient cohort with Legg–Calvé–Perthes disease

Cited by 18 publications

References 23 publications

Treatment of Arthritis Associated With Legg–Calve–Perthes Disease With Modular Total Hip Arthroplasty

Treatment of Arthritis Associated With Legg–Calve–Perthes Disease With Modular Total Hip Arthroplasty

Radiographic classifications in Perthes disease

LCPD: Reduced Range of Motion Resulting From Extra- and Intraarticular Impingement

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