Radiographic assessment of alignment following TKA: outline of a standardized protocol and assessment of a newly devised trigonometric method of analysis

Balakrishnan, Vikram; Steiger, Richard de; Lowe, Adrian J.

doi:10.1111/j.1445-2197.2009.05198.x

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…Regarding the tibia, the angle called "tibial angle" as well is the equivalent of the so-called "tibial sloping". This angle is an anatomical angle on that sagittal plane, which is formed between a tangent line at the base of the tibial component and a sagittal tibial anatomical line that is formed by connecting the furthest point of the center of the tibial shaft with a point located 10 cm under the knee joint, in the middle of the tibial shaft [3,[9][10][11][12][13].…”

Section: The Sagittal Anatomical and Mechanical Axis Of The Tibiamentioning

confidence: 99%

Postoperative TKA alignment in sagittal and axial plane, a systematic review

Creţu

Dragosloveanu

Cotor

et al. 2018

Romanian Journal of Orthopaedic Surgery and Traumatology

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The aim of this paper was to review the existing described methods for measuring postoperative TKA alignment in sagittal and axial plane and to review the existing literature regarding the axial plane evaluation with the use of the computer tomography. The most frequent mistakes when positioning the total knee arthroplasty (TKA) components are done in the axial plane, so it is necessary to know what the limits of the radiographic evaluation are and, for this evaluation, the CT scan is the most valuable in assessing the rotation of the components.

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Section: The Sagittal Anatomical and Mechanical Axis Of The Tibiamentioning

confidence: 99%

Postoperative TKA alignment in sagittal and axial plane, a systematic review

Creţu

Dragosloveanu

Cotor

et al. 2018

Romanian Journal of Orthopaedic Surgery and Traumatology

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“…Femoro-tibial malalignment in excess of 3°causes eccentric mechanical loading through the implanted prostheses [4] and is a recognised contributor of early mechanical failure [5].…”

Section: Introductionmentioning

confidence: 99%

The position of the centre of the femoral head relative to the midline of the pelvis: A consistent landmark in total knee replacement surgery

et al. 2012

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“…Femoro-tibial malalignment in excess of 3° causes eccentric mechanical loading through the implanted prostheses and is a recognized contributor of early mechanical failure. 4,5 A fixed valgus cut angle of either 5° or 6°, with respect to the anatomical axis of the femoral shaft, is frequently used in uncomplicated cases. This strategy uses the anatomical axis as a surrogate for the mechanical axis…”

Section: Introductionmentioning

confidence: 99%

The distance of the centre of femoral head relative to the midline of the pelvis: a prospective X-ray study of 500 adults

et al. 2017

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Background: The mechanical axis of the femur is defined as the line joining the centre of the femoral head to the centre of the knee joint. One of the pre-requisites for a successful total knee replacement (TKR) is correct positioning of the implants, so that the mechanical axis of the limb is restored to neutral. During TKR surgery, the distal femoral anatomy can be visualized. However, to identify the mechanical axis of the femur, the location of the femoral head must be known.Methods: We prospectively measured distance of centre of femoral head relative to the midline of the pelvis in 500 adults, using x ray of pelvic with both hip anteroposterior view done for medical causes during 2-May-2015 to 1-Jan-2017 with satisfied the following inclusion and exclusion criteria. Patient gender and age were known. Both hips were clearly shown on the radiograph and not affected by any developmental or acquired condition that might deform normal anatomy. Radiographs demonstrating unacceptable pelvic tilt or rotation were excluded. Also, we excluded any cases where degenerative changes in the native hip were more severe than grade 1, based on the Tönnis classification.Results: There were total 500 patients in which 250 were male and 250 were female. The mean age of male was 52.14 year (SD ±80.80 mm, 95% CI 51.05 to 53.24 mm) and female was 52.11 years (SD ±8.82 mm, 95% CI 51.01 to 53.24 mm).The mean distance of femoral head centre from midline in male was 95.02mm (SD ±2.20 mm, 95% CI 94.75 to 95.30 mm) and in female was 91.54 mm (SD ±2.64 mm, 95% CI 91.22 to 91.87 mm).Conclusions:This study provide a useful information to determine the femoral head center relative to the midline of pelvis which useful intraoperatively.

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Radiographic assessment of alignment following TKA: outline of a standardized protocol and assessment of a newly devised trigonometric method of analysis

Abstract: The study detailed a protocol for the measurement of axial alignment of the limbs and components following TKA, and provided evidence that a newer TM of angle measurement was superior in terms of precision and intra-rater reliability in comparison with the traditional method.

Cited by 4 publications

References 19 publications

Postoperative TKA alignment in sagittal and axial plane, a systematic review

Postoperative TKA alignment in sagittal and axial plane, a systematic review

The position of the centre of the femoral head relative to the midline of the pelvis: A consistent landmark in total knee replacement surgery

The distance of the centre of femoral head relative to the midline of the pelvis: a prospective X-ray study of 500 adults

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