How to measure with the CupAnteversionInclinationApp V3 скачать в хорошем качестве

How to measure with the CupAnteversionInclinationApp V3

IIn Total hip Arthroplasty the orientation, namely anteversion and inclination of the new acetabular component cup influences wear, range of movement (ROM), and the likelihood of dislocation after total hip replacement (THR). Evaluating objectively of the cup anteversion, and inclination in hip arthroplasty replacement surgery is of paramount importance. Radiographs are the most important diagnostic means in the follow-up for evaluation of a total hip arthroplasty. Measuring anteversion and inclination in everyday clinical setting is a cumbersome work for a medical doctor. Computation requires a calculator, which requires an additional effort during practice and slows down workflow. The App is medical software aimed for orthopaedic surgeons, providing a tool that allow doctors to: -Securely import medical images directly from the camera or stored photos. -By marking certain anatomical landmark and points in a simple standard AP pelvic radiograph, values for cup inclination and anteversion are being calculated. The app is based on Widmer’s method which is the proven that is the most accurate compared to others. -Pelvic tilt expressed by the angle APP is incorporated in measurements and can be adjusted manually according to surgeons preference.The angle APP is added and in calculation and can be adjusted manually according to surgeons preference. A negative PT angle indicates posterior tilt, and a positive PT angle indicates anterior. In case you surgeon does not have actual value of App angle, by seeing the position of coccyx in pelvis X-ray in relation to pubis symphis the value can be estimated.(Schwarz TJ et al. Correction of Pelvic Tilt and Pelvic Rotation in Cup Measurement after THA An Experimental Study. Rofo. 2017 Sep;189(9):864-873. ) -by pressing + or - value of APP angle is changed accordingly taking also positive or negative values. In case the measured values by the App of Radiographic Inclination RI or Radiographic Anteversion- RA are between normal range (40°±10° of inclination or 15° ± 10° of anteversion, Lewinnek et al. Dislocations after total hip-replacement arthroplasties. J Bone Joint Surg Am 1978; 60: 217 – 220 ), the printed colour of them in screen is green, otherwise whenever falls outside the normal range, the values of RI or RA are printed in red colour, indicating that the positioning of the cup is not optimal. -Radiographic Inclination (RI) and Radiographic Anteversion (RA) values are adjusted by taking into account pelvic tilt (APP angle). RI or RA values are printed in red or green, according to measured value in cases these are in certain range (Lewinnek at al), indicating if the positioning of the cup is optimal (green) or not (red). -Operative Inclination (OI), Operative Anteversion (OA), Anatomical Inclination (AI), Anatomical Anteversion (AA) are also calculated. -The data are printed over to screen so each case can easily assessed -Save the planned images, for later review or consultation. The app offers an easy way to quantify cup anteversion and inclination a quick and comfortable manner without the use of a goniometer or a ruler or to calculate elaborated formulas. All information received from the software output must be clinically reviewed regarding its plausibility before patient treatment! The App is indicated for assisting healthcare professionals. Clinical judgment and experience are required to properly use the software.The software is not for primary image interpretation. In a busy THA practice, the examiner to draw lines in X-rays, it is time consuming and cumbersome. Accessory instruments like calculators, protractors, hinged goniometers, well sharped pencils, rulers or even transparent papers must be available. This App is particular useful in clinical settings where you need a quick results without losing time. Please see tutorial videos at the developer’s web site www.orthopractis.com https://itunes.apple.com/us/app/cupan... Reference 1.Nomura T, Naito M, et al . An analysis of the best method for evaluating anteversion of the acetabular component after total hip replacement on plain radiographs. Bone Joint J. 2014 May;96-B(5):597-603. 2.Lembeck et al, Pelvic tilt makes acetabular cup navigation inaccurate.Acta Orthop. 2005 Aug; 76 (4) : 517 - 23. 3.Schwarz TJ et al. Correction of Pelvic Tilt and Pelvic Rotation in Cup Measurement after THA - An Experimental Study. Rofo. 2017 Sep;189(9):864-873. 4.Murray DW: The definition and measurement of acetabular orientation. J Bone Joint Surg Br 1993 75:228, 5.Widmer KH A simplified method to determine acetabular cup anteversion from plain radiographs. J Arthroplasty. 2004 Apr;19(3):387-90. 6.Lewinnek et al. Dislocations after total hip-replacement arthroplasties. J Bone Joint Surg Am 1978; 60: 217 – 220