CT-based automated planning of acetabular cup for total hip arthroplasty (THA) based on hybrid use of two statistical atlases

2016 ◽  
Vol 11 (12) ◽  
pp. 2253-2271 ◽  
Author(s):  
Yoshiyuki Kagiyama ◽  
Itaru Otomaru ◽  
Masaki Takao ◽  
Nobuhiko Sugano ◽  
Masahiko Nakamoto ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Automated Planning ◽  
Acetabular Cup ◽  
Total Hip

Assessment of an Orthopaedic Templating Software Package for Uncemented Total Hip Arthroplasty

2020 ◽  
Vol 4 (04) ◽  
pp. 155-157
Author(s):  
Michael Newman ◽  
David Hartwright
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Acetabular Cup ◽  
Total Hip ◽  
Pelvic Radiograph ◽  
Uncemented Total Hip Arthroplasty ◽  
Femoral Stems ◽  
Hip Arthroplasties ◽  
Acetabular Components ◽  
Insight Into

AbstractThe aim of this study was to assess a large, single-surgeon dataset of uncemented total hip arthroplasties that had been templated using software. This assessment compared preoperative templated predictions with what was implanted with regard to (1) femoral prosthesis size and (2) acetabular cup size. The operation notes for two types of uncemented total hip arthroplasty performed by a single surgeon between January 9, 2008, and March 21, 2019, were assessed. The data were refined so that only those that were fully templated on a correctly calibrated pelvic radiograph were included. This provided a total of 153 cases. The predicted software template was compared with actual implanted component sizes. With regard to the femoral stems, the templating software was exactly correct in 45.75% of cases and was accurate to within one size in 87.59% of cases. With regard to the acetabular component, the templating software was exactly correct in 52.94% of cases and was accurate to within one size (2 mm) in 86.94% of cases. Templating software offers an accurate prediction of the size of uncemented femoral and acetabular components. In addition, the benefits of templating include cognitive rehearsal, insight into potentially challenging aspects of surgery, and highlighting intraoperative issues where there is a large intraoperative deviation from what is templated. This study demonstrates the congruence and reproducibility of templating software when compared with other smaller studies performed in the literature.

scholarly journals Compression of the Femoral Vessels by a Pseudotumor after Metal-on-Metal Total Hip Arthroplasty

2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
Yasuaki Tamaki ◽  
Tomohiro Goto ◽  
Takahiko Tsutsui ◽  
Tomoya Takasago ◽  
Keizo Wada ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Vascular Compression ◽  
Acetabular Cup ◽  
Primary Metal ◽  
Total Hip ◽  
Circulatory Disturbance ◽  
Metal Head ◽  
Metal On Metal ◽  
Femoral Vessels

Here we present a case of pseudotumor following total hip arthroplasty (THA) that resulted in a circulatory disturbance caused by compression of the femoral vasculature. A 63-year-old man presented with pain, swelling, and redness of the left leg 5 years after primary metal-on-metal THA using the AML-Plus stem, Pinnacle® acetabular cup, and 36 mm diameter Ultamet™ metal head system (DePuy Orthopaedics, Warsaw, IN). Enhanced computed tomography and magnetic resonance imaging revealed a large cystic lesion extending from the left hip anteriorly to the intrapelvic region and compressing the left femoral vessels. Percutaneous puncture of the lesion yielded a dark red aspirate and the patient was diagnosed to have a pseudotumor causing compression of the femoral vessels. We performed revision surgery to replace the metal head and metal liner with a smaller ceramic head and polyethylene liner without removal of the stem. Corrosion of the head-neck junction was identified intraoperatively with no obvious wear on the bearing surfaces. The left leg swelling and redness improved immediately postoperatively. A large pseudotumor should be kept in mind as a cause of vascular compression with unilateral leg edema in a patient who has undergone metal-on-metal THA.

Failure Mode of Polyethylene Liner in Total Hip Arthroplasty with Harris-Galante II Acetabular Cup

2004 ◽  
Vol 39 (7) ◽  
pp. 766
Author(s):  
Byung Woo Min ◽  
Ki Cheol Bae ◽  
Kyung Jae Lee ◽  
Sung Won Sohn ◽  
Chul Hyung Kang
Keyword(s):  
Total Hip Arthroplasty ◽  
Failure Mode ◽  
Hip Arthroplasty ◽  
Polyethylene Liner ◽  
Acetabular Cup ◽  
Total Hip

scholarly journals To cement or not to cement acetabular cups in total hip arthroplasty: a systematic review and re-evaluation

SICOT-J ◽  
2019 ◽  
Vol 5 ◽  
pp. 35
Author(s):  
Frank Van Praet ◽  
Michiel Mulier
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
English Literature ◽  
Cost Effective ◽  
Acetabular Cup ◽  
Qualitative Synthesis ◽  
Osteoarthritis Of The Hip ◽  
Total Hip ◽  
Primary Osteoarthritis ◽  
Cemented Stem

Introduction: Total Hip Arthroplasty (THA) in the treatment of primary osteoarthritis of the hip has evolved to a very safe and cost-effective intervention with revision rates below 5% after 10 years. To this day, however, controversy remains on whether or not to cement the acetabular cup. Methods: A comprehensive PubMed search of the English literature for studies published between 2007 and 2018 was performed. Studies comparing the clinical (revision rate, functionality), radiological (wear) or economic (cost) differences between cemented (cemented stem with cemented cup) and hybrid (cemented stem with uncemented cup) prostheses for primary osteoarthritis of the hip were identified as eligible. Results: A total of 1032 studies were identified whereof twelve were included for qualitative synthesis. All studies concerning the risk of revision were based on registry data, covering a total of 365,693 cups. Cemented prostheses had a similar or lower risk of revision compared to hybrid prostheses in every study, but performed slightly worse on functionality and quality of life. While cemented prostheses were the cheapest option, hybrids were the most cost-effective. Discussion: The widespread preference for cementless fixation of the acetabulum cannot be explained by a superior survival of cementless or hybrid models. Irrespective of age, cemented fixation of the acetabulum remains the gold standard to which other techniques should be compared.

scholarly journals Acetabular Cup Design Influences Deformational Response in Total Hip Arthroplasty

2012 ◽  
Vol 471 (2) ◽  
pp. 403-409 ◽  
Author(s):  
John B. Meding ◽  
Scott R. Small ◽  
Mary E. Jones ◽  
Michael E. Berend ◽  
Merrill A. Ritter
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Acetabular Cup ◽  
Total Hip ◽  
Cup Design

Diametral Clearance Effect on Friction and Wear Characteristics of a Metal-on-Metal Total Hip Arthroplasty

2007 ◽  
Author(s):  
Ming Shen ◽  
Birgit Grundmann ◽  
Gernot Liebentritt
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Wear Test ◽  
Frictional Torque ◽  
Acetabular Cup ◽  
Total Hip ◽  
Hip Simulator ◽  
Pendulum Test ◽  
Metal On Metal ◽  
Friction And Wear Characteristics

Tribological performance of a metal-on-metal total hip arthroplasty was evaluated as a function of the diametral clearance between the femoral head and acetabular cup. Frictional torque results, measured by a pendulum apparatus, suggested that a threshold clearance existed. Below the threshold clearance, frictional torque increased nearly linearly as the clearance decreased. Beyond the threshold, the clearance effect was minimal. The wear results, measured using a hip simulator, showed that a running-in wear was present in the first million cycles. The subsequent steady-state wear rate was very low in all tested clearances. The highest running-in wear was associated with the largest clearance. These results demonstrated the usefulness of combining a pendulum test and a simulator wear test to fully characterize the clearance effect.

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