Die Bestimmung von Rotationsfehlern am Femur durch computertomographische Bestimmung des Antetorsionswinkels des Schenkelhalses

Wissing, H.; Spira, G.

doi:10.1007/bf02588357

Cited by 26 publications

(8 citation statements)

References 3 publications

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“…with good correlation (r = .82-.91) (Dunlap et al, 1953;Rippstein, 1955;Ogata and Goldsand, 1979;Lee et al, 1992). However, in living subjects, the error could be as high as 20° due to positioning errors (Wissing and Spira, 1986). The EOS system yields total average differences compared to CT of 0°-5° (Buck et al, 2012;Rosskopf et al, 2014).…”

Section: Differences Between Methodsmentioning

confidence: 95%

Femoral anteversion: significance and measurement

et al. 2020

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Femoral neck anteversion (FNA), also called femoral torsion or femoral version, is the angle between the projection of two lines in the axial plane perpendicular to the femoral shaft; one line going through the proximal femoral neck region and the second one through the distal condylar region (Figure 1), indicating the degree of 'twist' of the femur. FNA affects the biomechanics of the hip, as moment arms and the line of action of muscles around the joint are altered. As a result, FNA is associated with differences in gait and is a risk factor for clinical problems

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Section: Differences Between Methodsmentioning

confidence: 95%

Femoral anteversion: significance and measurement

et al. 2020

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“…In humans it has been documented that the AT-angle correlates with age and body form. 16 The average AT-angle of adults was 14" with a range of -1 1" to +39". Changes are attributed to varying degrees of retroversion of the femoral neck, 20" in the second month of gestation, and 30" anteversion at birth.…”

Section: Introductionmentioning

confidence: 97%

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

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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.

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“…A clear association between femoral neck retroversion, hip pain and OA has been described [ 4 , 10 , 11 ]. Patients with femoral version which has been reduced to zero following varus derotational osteotomy often present with hip pain which disappears once their version is brought back to the normal version of 15–20° [ 10 , 12 , 13 ]. Another study noted that the mean femoral neck anteversion of their cohort with FAI was lower in comparison to the control group [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Hip contact stress and femoral neck retroversion: a biomechanical study to evaluate implication of femoroacetabular impingement

et al. 2015

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The current literature on femoroacetabular impingement (FAI) is focused on acetabular orientation and femoral head asphericity, with little emphasis on the effect of version of the femoral neck. A biomechanical model was developed to determine the causative effect, if any, of femoral retroversion on hip contact stress and, if present, delineate the type of FAI with femoral neck retroversion. Five pairs of cadaveric hips (n = 10) were tested by loading the hip in 90° of flexion and measured the peak joint pressure and the location of the peak joint pressure. The experiment was repeated after performing a subtrochanteric osteotomy and retroverting the proximal femur by 10°. Ten hips were successfully tested, with one hip excluded due to an outlier value for peak joint pressure. Retroversion of the proximal femur significantly increased the magnitude of mean peak joint pressure. With retroversion, the location of the peak joint pressure was shifted posteroinferiorly in all cases. In conclusion, femoral neck retroversion increases peak joint pressure in the flexed position and may act as a cause of femoroacetabular impingement. The location of peak joint pressure suggests a pincer-type impingement with retroversion. The version of femoral neck should be assessed as a possible causative factor in patients with FAI, especially those with pincer-type impingement.

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Die Bestimmung von Rotationsfehlern am Femur durch computertomographische Bestimmung des Antetorsionswinkels des Schenkelhalses

Cited by 26 publications

References 3 publications

Femoral anteversion: significance and measurement

Femoral anteversion: significance and measurement

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

Hip contact stress and femoral neck retroversion: a biomechanical study to evaluate implication of femoroacetabular impingement

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