Effect of Acetabular Cup Position and Orientation in Cemented Total Hip Arthroplasty

Hirakawa, Kazuhiko; Mitsugi, Naoto; Koshino, Tomihisa; Saito, T.; Hirasawa, Yasusuku; Kubo, Toshikazu

doi:10.1097/00003086-200107000-00020

Cited by 167 publications

(119 citation statements)

References 28 publications

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“…The lack of difference in linear PE wear rate and variance between the NHC and HHC groups and the wide distribution of PE wear values in both groups are in accordance with the results of studies that found not only the hip center is responsible for PE wear in a hip arthroplasty but also numerous other factors, such as cup inclination, articulating surfaces, femoral head size, and patient age or body weight [16,17,20,23,24,38].…”

Section: Discussionsupporting

confidence: 88%

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

Christodoulou¹,

Dialetis²,

Christodoulou

2010

Clinical Orthopaedics &Amp; Related Research

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Background The high hip center technique used for a deficient acetabulum is reconstruction of the hip at a high center of rotation. In the literature, there is no consensus regarding the value of this technique. Questions/purposes We investigated whether the newgeneration biconical threaded Zweymüller 1 cup fixed in a high nonanatomic position in patients with arthritis secondary to congenital hip disease experienced different rates of polyethylene wear and long-term survivorship when compared with anatomically positioned cups. Patients and Methods We studied the polyethylene wear rate and Kaplan-Meier survivorship of 104 titanium threaded Zweymüller 1 cups in 88 patients (81 females), placed in 70 hips at near-normal hip center and in 34 hips at a high hip center position at a distance of 31.1 to 60 mm (mean, 39.7 mm) from the interteardrop line. Minimum followup was 2 years (mean ± SD, 8.6 ± 3.5 years; range, 2-15 years). ResultsThe mean linear polyethylene wear rates in the near-normal and high hip center groups were not different (0.110 ± 0.050 mm and 0.113 ± 0.057 mm, respectively

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Section: Discussionsupporting

confidence: 88%

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

Christodoulou¹,

Dialetis²,

Christodoulou

2010

Clinical Orthopaedics &Amp; Related Research

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“…The true acetabulum was identified by the location of its inferior portion after the marginal osteophyte was cleared. The postoperative radiographs showed that the mean location of the hip centre was 26.7 ± 2.77 mm horizontally and 18.7±4.06 mm vertically, which are more accurate than those reported for other studies [8,11]. Proper positioning of the hip centre prevents the acetabular component from loosening.…”

Section: Discussionsupporting

confidence: 51%

The utility of digital templating in Total Hip Arthroplasty with Crowe type II and III dysplastic hips

Zhao

Zhu

Zhao

et al. 2010

International Orthopaedics (SICOT)

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With the superiority of digital imaging, conventional preoperative acetate templating is gradually being replaced by digital templating in total hip arthroplasty (THA). The purpose of this study was to assess the utility of digital templating for patients with Crowe type II and III dysplastic hips. In this study, 41 THA patients with Crowe type II or III dysplastic hips and 48 THA patients with other primary diseases were retrospectively reviewed. All patients were fitted with cementless prostheses in 2008. For the THA patients with dysplastic hips, we attempted to restore their hip centres to the position of the true acetabulum. Digital templating was the method chosen to achieve hip centre restoration. The prosthesis prediction accuracy (within ± one size using digital templating) was 20 (48.8%) for the cup size and 30 (73.2%) for the stem size. Meanwhile, for patients with other primary diseases, the accuracy for the cup size within ± one size was 34 (70.8%) and for the stem size accuracy was within ± one size in 38 (79.2%). Between the two patient groups, there was a significant difference in the predicted cup size. In patients with dysplastic hips, the low accuracy of the predicted cup size may have resulted from difficulty in predicting the vertical location of the hip centre. Despite this limitation, preoperative planning using digital templating is a convenient technique for THA patients with Crowe type II and III dysplastic hips.

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“…Cup size and position were determined with reference to the anteroposterior width of the acetabulum, bony coverage [16], limb length, and stem anteversion [17] (Figure 1). Cup anteversion was based on stem anteversion, set at 10 increments [18] while maintaining the radiographic inclination of the cup at 40 to avoid edge loading and excessive wear [1,[19][20][21] (Table II). (2) Preparation.…”

Section: Patientsmentioning

confidence: 99%

Accuracy of angle and position of the cup using computed tomography-based navigation systems in total hip arthroplasty

Iwana

Nakamura

Miki

et al. 2013

Computer Aided Surgery

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Objective: The objectives of this study were to evaluate the accuracy of computed tomography (CT)-based navigation and to investigate whether the level of surgeon experience affects the accuracy of cup positioning under navigation. Methods: This study investigated 117 hips in 103 patients who underwent primary total hip arthroplasty (THA) by 7 surgeons using a CT-based navigation system. Pre-and postoperative CT images were matched using a volume registration technique. Postoperative cup angles and positions were then measured using the same pelvic coordinates, and results were compared for experienced and inexperienced surgeons. Results: The mean absolute error of the cup angle was 1.8 AE 1.6 for inclination and 1.2 AE 1.1 for anteversion. The mean absolute errors of cup position were 1.9 AE 1.5 mm, 1.4 AE 1.2 mm, and 1.9 AE 1.3 mm on the x-, y-and z-axes, respectively. No significant differences in accuracy were identified between experienced and inexperienced surgeons. Conclusions:The absolute spatial error of cup position was 2 mm for each axis, and the angle error was 2 for the angles of inclination and anteversion. This navigation system could therefore help surgeons perform accurate cup placement irrespective of the surgeon's level of experience.

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Effect of Acetabular Cup Position and Orientation in Cemented Total Hip Arthroplasty

Cited by 167 publications

References 28 publications

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

The utility of digital templating in Total Hip Arthroplasty with Crowe type II and III dysplastic hips

Accuracy of angle and position of the cup using computed tomography-based navigation systems in total hip arthroplasty

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