Proximale Tibiaepiphyse im Magnetresonanztomogramm

Jopp, Eilin; Schröder, Inge; Maas, R.; Adam, Gerhard; Püschel, Klaus

doi:10.1007/s00194-010-0705-1

Cited by 58 publications

(14 citation statements)

References 23 publications

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“…They used a novel radiographic method which subdivides the continuum of development into five specific stages of union. Regarding the application of an imaging modality with no radiation risk, one MRI study of the knee concerned only the proximal tibial epiphysis [61]. Dedouit et al [62] developed an original MRI staging system for epiphyseal fusion of growth plate maturation of the knee and evaluated its reliability and validity for age assessment of living individuals.…”

Section: Discussionmentioning

confidence: 99%

Radiographic analysis of epiphyseal fusion at knee joint to assess likelihood of having attained 18 years of age

et al. 2012

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Radiological analysis of the epiphyses of the knee joint provides new valuable information, which may be used in combination with these well-established techniques in order to maximise the accuracy in the assessment of age of 18 years. A total of 215 antero-posterior radiographs of the knee was reviewed retrospectively in patients aged between 14 and 24 years old (99 boys, 116 girls). Fusion was scored as stage 1, epiphysis not fused; stage 2, epiphysis is fully ossified and epiphyseal scar is visible; and stage 3, epiphysis is fully ossified and epiphyseal scar is not visible. Scores of 0, 1 and 2 were assigned to stages 1, 2 and 3, respectively. Lastly, the score related to epiphyseal fusion at the knee joint was obtained by adding the three scores of the distal femur, proximal tibia and proximal fibula. Age distribution gradually increased with each score, for both genders. The mean age (±standard error) in each score category varied between genders, but the differences were not significant (p > 0.11). Five tests were performed to discriminate between individuals who were or were not at age 18 years or more, according to the receiver operating curve. For boys, the highest value of accuracy was obtained with score 3, with high sensitivity (Se = 93.33 %) and specificity (Sp = 89.29 %). For girls, it was obtained with score 4, with high accuracy (Acc = 85.86 %). These results indicate that radiographic analysis of the knee is a valuable alternative as a non-invasive method of estimation of 18 years of age.

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Section: Discussionmentioning

confidence: 99%

Radiographic analysis of epiphyseal fusion at knee joint to assess likelihood of having attained 18 years of age

et al. 2012

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“…MRI-based grading of the physeal closure was performed by two independent readers (E.J., M.M., each with 5 years of experience in forensic medicine) according to the method published by Jopp et al [35,62] using a three-stage visual grading system ( Table 3). As described for the US-based approach, the degree of physeal closure was graded for the distal femur, the proximal tibia, and the proximal fibula.…”

Section: Mrimentioning

confidence: 99%

“…The largest disagreement between the methods was for cases with stage 2 classification (partially closed physis). US slightly outperformed MRI with a higher sensitivity (sens US = 1.0 vs. sens MRI = 0.7), but slightly lower specificity (spec US = Table 3 MRI-based staging system of growth plate closure around the knee according to Jopp et al [35] MRI-based visual staging of growth plate closure of the knee joint MRI-S1 Open growth plate and a broad, T1w hypointense band is noted between the epiphysis and the metaphysis MRI-S2 Partially fused growth plate in the center of the bone, the remnant of the physeal plate can be identified by a very thin line representing the epiphysical scar, and the peripheral growth plate is not fused MRI-S3 Closed growth plate, the physis is completely fused from the center to the periphery, and only traces of an epiphysical scar may be visible Note: Staging was performed on coronally oriented T1-weighted images of the center of the bone…”

Section: Us Vs Mrimentioning

confidence: 99%

Forensic age assessment of the knee: proposal of a new classification system using two-dimensional ultrasound volumes and comparison to MRI

et al. 2020

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Objectives To assess epiphyseal growth plate closure of the knee for forensic age estimation using an ultrasound (US)-based method and to compare the findings with MRI. Methods Thirty-three healthy male individuals (age, 14.4–19.3 years) were prospectively evaluated for epiphyseal growth plate closure of the right knee by recordings of two-dimensional US volumes and a high-resolution T1-weighted MRI sequence. The degree of epiphyseal growth plate closure was rated independently by two readers for each method using a modality specific three-point scale that differentiates between an open physis (S1), a partially closed physis (S2), and a closed physis (S3). Results The inter-rater agreement was high for the US (Cohen’s kappa (CK): femur 95.2%, tibia 81.3%, fibula 86.3%) and the MRI method (CK: femur 70.2%, tibia 90.8%, fibula 79.8%). The degree of growth plate closure associated positively with advancing age. The US system showed a clearer separation of median ages with lower overlap than the MRI system. Open growth plates on minors (< S3 on femur and tibia) were identified by US with higher sensitivity (1.0 vs. 0.7) and slightly lower specificity (0.7 vs. 0.85) compared with MRI. The examination time was substantially shorter on US than on MRI (2.65 ± 0.91 min vs. 24.72 ± 2.72 min; p < 0.001). Conclusions The US method for evaluation of growth plate closure of the knee can reliably assign male individuals to different ossification stages and identifies minors with high accuracy. More studies with larger numbers are needed to further evaluate this method. Key Points • US is feasible to determine the degree of epiphyseal growth plate closure of the knee, shows a high degree of reliability, and is comparable to MRI. • US of the knee can detect open growth plates on male minors with high accuracy. • US of the knee may be used as a fast, non-invasive imaging tool for forensic age estimation to identify male minors.

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“…MRI studies on the chronological process of skeletal maturation also exist for the epiphyseal plate of the distal radius (Dvorak et al 2007a(Dvorak et al , 2007bDvorak 2009;George et al 2012), the epiphyseal plate of the proximal tibia (Jopp et al 2010;Dedouit et al 2012) as well as the epiphyseal plate of the distal femur (Dedouit et al 2012).…”

Section: Radiation Exposure In X-ray Examinationsmentioning

confidence: 99%

Age Estimation in Living Individuals

Schmeling¹

2014

Handbook of Forensic Medicine

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Proximale Tibiaepiphyse im Magnetresonanztomogramm

Cited by 58 publications

References 23 publications

Radiographic analysis of epiphyseal fusion at knee joint to assess likelihood of having attained 18 years of age

Radiographic analysis of epiphyseal fusion at knee joint to assess likelihood of having attained 18 years of age

Forensic age assessment of the knee: proposal of a new classification system using two-dimensional ultrasound volumes and comparison to MRI

Age Estimation in Living Individuals

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