Cementless Hemispheric Porous-Coated Sockets Implanted with Press-Fit Technique without Screws

Udomkiat, Pacharapol; Dorr, Lawrence D.; Wan, Zhinian

doi:10.2106/00004623-200207000-00016

Cited by 119 publications

(96 citation statements)

References 17 publications

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“…We had no control group and the followup was relatively short. Clinical and radiographic outcomes of cementless THA are well documented [1,5,35,36]. As mentioned previously, this study presents the comprehensive results of one of the earliest clinical applications of the TMT cup.…”

Section: Discussionmentioning

confidence: 91%

“…data on long-term survivorship of this implant and its performance in comparison with contemporary designs, it is not possible to estimate its cost-effectiveness in association with complication rate, revision incidence and complexity, and total hospital and social costs. Porous-coated metal-backed cups have had revision rates ranging from 0% to approximately 8% after at least 5 years followup [1,5,35]. Most of these revisions are the result of failure of fixation secondary to osteolysis [32,39].…”

Section: Discussionmentioning

confidence: 99%

“…Using four different cup designs in 152 patients, Lewallen and Cabanela reported one revision for aseptic loosening and no evidence of osteolysis at a 5-year minimum followup [25]. In a more recent study, Udomkiat et al reported 99.1% survivorship at 12 years for hemispheric cups implanted without screws [35].…”

Section: Introductionmentioning

confidence: 99%

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Survivorship of Monoblock Trabecular Metal Cups in Primary THA

Malizos

Bargiotas

Papatheodorou

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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Monoblock trabecular metal cups are made of a novel porous material intended to enhance ingrowth and improve fixation. We prospectively followed 223 consecutive patients with 245 trabecular metal acetabular cups implanted during primary total hip arthroplasties to determine the overall survivorship of the implant, and any association of survivorship to primary diagnosis and age, and to determine the fate of polar gaps and cysts. Minimum followup was 36 months (mean, 60 months; range, 36-112 months). Patients were assessed with the Harris Hip score and the Oxford questionnaire and radiographically with standardized serial radiographs. At last followup, all cups were radiographically stable with no evidence of migration or progressive radiolucencies. The survivorship with reoperation as the end point was estimated at 98.75% with a 95% confidence interval. Three reoperations occurred during the first 36 months. The Harris hip score increased from 48 to 94 and the Oxford score was 16.4 at the last examination. We observed no difference in terms of survivorship among patients with osteoarthritis, osteonecrosis, or hip dysplasia. Seven of 14 (50%) osteoarthritis cysts and 10 of 33 (33.3%) polar gaps detected on postoperative radiographs decreased or filled, whereas none of the remainder deteriorated with time. Our midterm results suggest this implant may enhance fixation, but long-term followup is needed to confirm our findings.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

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Survivorship of Monoblock Trabecular Metal Cups in Primary THA

Malizos

Bargiotas

Papatheodorou

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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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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“…The use of a press-fit acetabulum in THA is associated with a survivorship of 92% to 99% at a mean followup of 6 to 10 years [5,25,26]. Likewise, porous-coated press-fit acetabula have demonstrated similar survivorship at a mean followup of 5 to 10 years with their use in hip resurfacing arthroplasty [2,7,9,19,23].…”

Section: Introductionmentioning

confidence: 96%

Should We Worry About Periacetabular Interference Gaps in Hip Resurfacing?

Gomes

Olsen

Donnelly

et al. 2013

Clinical Orthopaedics &Amp; Related Research

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Background Press-fit acetabular component seating in hip resurfacing can be challenging as a strong interference fit is required. It has not been established whether reducing the acetabular underream minimizes incomplete component seating or leads to increased acetabular loosening. Questions/purposes We examined (1) the incidence and natural history of postoperative interference gaps in hip resurfacing and (2) whether reduction of the acetabular underream from 2 mm to 1 mm reduces the incidence of periacetabular interference gaps.

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Cementless Hemispheric Porous-Coated Sockets Implanted with Press-Fit Technique without Screws

Cited by 119 publications

References 17 publications

Survivorship of Monoblock Trabecular Metal Cups in Primary THA

Survivorship of Monoblock Trabecular Metal Cups in Primary THA

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

Should We Worry About Periacetabular Interference Gaps in Hip Resurfacing?

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