Messung des femoralen Torsionswinkels von Kindern durch Magnetresonanztomographie im Vergleich mit CT und Ultraschall

Tomczak, R; Günther, K.; Pfeifer, Tilo; Häberle, H; Rieber, A; Danz, B.; Rilinger, N.; Friedrich, J. M.; Brambs, Hans‐Jürgen

doi:10.1055/s-2007-1015869

Cited by 24 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In humans it has been documented that MR is the preferred method for measuring the AT-angle and allows for measurements that most accurately represent the true anatomy of the femoral neck. 21 This study shows that the direct measurements on mascerated femora as described in the anatomical study are close to MR-AT values of the clinical study.…”

Section: Discussionsupporting

confidence: 83%

The Correlation of Canine Patellar Luxation and the Anteversion Angle as Measured Using Magnetic Resonance Images

Kaiser

Cornely

Golder

et al. 2001

Vet Radiology Ultrasound

View full text Add to dashboard Cite

Measurements from magnetic resonance (MR) images can be used to examine the anteversion angle (AT-angle) and its influence on the lateromedial or mediolateral luxating forces on the patella. The AT-angle of the femoral neck was measured with the aid of MR imaging in 45 pelvic limbs without patellar instability, in 33 limbs with patellar luxation and in 6 limbs with rupture of the cranial cruciate ligament. The limbs with medial patellar luxation were divided into three groups based on clinical examination. The mean (range) AT-angle was 7.6 degrees (0 degrees to 24 degrees) in the "normal" group, 8.6 degrees (-10 degrees to 29 degrees) in the group "grade II," and -0.4 degrees in the group "grade III" (-28 degrees to 12 degrees). A mean (range) AT-angle of 4.8 (-4 degrees to 11 degrees) was measured in the pelvic limbs with rupture of the cranial cruciate ligament. Compared to literature that described AT-angles based on radiographs of normal limbs, reduced AT-angles were found in this study due to different lines of measurement of the femoral neck. This study documents that the AT-angle of the femoral neck does not influence patellar instability. This study also demonstrates that MR images can be used to make exact measurements of the canine AT-angle that represent the true anatomy of the femoral neck.

show abstract

Section: Discussionsupporting

confidence: 83%

The Correlation of Canine Patellar Luxation and the Anteversion Angle as Measured Using Magnetic Resonance Images

Kaiser

Cornely

Golder

et al. 2001

Vet Radiology Ultrasound

View full text Add to dashboard Cite

show abstract

“…The measurement of the epicondyles is subject to high inter-and intrarater variablility [14]. Tomczak et al [15] presented a similar procedure for MR tomography. This approach enables a clear display of the cartilage without radiation, but the accuracy and the reproducibility of the results are limited.…”

Section: Introductionsupporting

confidence: 66%

Computer-assisted optimization of correction osteotomies on lower extremities

Schkommodau

Frenkel

Belei

et al. 2005

Computer Aided Surgery

View full text Add to dashboard Cite

Automated methods are presented for the planning of correction osteotomies and osteosynthesis on lower extremities. Intraoperative calibrated X-ray images and kinematic measurements using optical tracking systems are the basis for the identification of the individual anatomy of the patient. The correction input of the surgeon, together with optimization algorithms, allows the calculation of the position and orientation of the osteotomies and the repositioning of the bone fragments. A navigation module supports the surgeon during the execution of osteotomies and repositioning, as well as osteosynthesis. So far, the approach has been evaluated in laboratory trials and ex vivo tests.

show abstract

“…The other methods and associated clinical applications based on CT sections of the femoral neck (3,9,13,18,20,25,27,28) are similarly flawed. Consequently, a 3D mathematical correction as presented in this paper or as suggested by EGUND & PALMER (1 1) is essential for the successful application of CT in measuring the AV angle.…”

Section: Discussionmentioning

confidence: 99%

“…A recent study (27) measured femoral AV by means of MR imaging. Inherent to this method is a similar requirement that the results be mathematically adjusted according to the actual 3D geometry of the set-up.…”

Section: Discussionmentioning

confidence: 99%

CT Measurement of Anteversion in the Femoral Neck

Hermann

Egund

1997

Acta Radiol

View full text Add to dashboard Cite

show abstract

Messung des femoralen Torsionswinkels von Kindern durch Magnetresonanztomographie im Vergleich mit CT und Ultraschall

Abstract: MRI is recommended for preoperative planning of paediatric femoral rotation osteotomy patients.

Cited by 24 publications

References 0 publications

The Correlation of Canine Patellar Luxation and the Anteversion Angle as Measured Using Magnetic Resonance Images

The Correlation of Canine Patellar Luxation and the Anteversion Angle as Measured Using Magnetic Resonance Images

Computer-assisted optimization of correction osteotomies on lower extremities

CT Measurement of Anteversion in the Femoral Neck

Contact Info

Product

Resources

About