Cup Press Fit in Uncemented THA Depends on Sex, Acetabular Shape, and Surgical Technique

García-Rey, Eduardo; García-Cimbrelo, Eduardo; Cruz-Pardos, Ana

doi:10.1007/s11999-012-2381-9

Cited by 35 publications

(41 citation statements)

References 40 publications

(63 reference statements)

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“…A vertical cup with an inclination angle of more than 50 degrees has been reported to be the most important factor related to aseptic loosening [2]. Our findings support this, as the loosened components were more vertical and less anteverted as compared to controls.…”

Section: Discussionsupporting

confidence: 87%

“…In between group comparison of the radiological measurements there were few statistically significant differences, however the differences were small and had no clinical significance. Previously it has been shown that press-fit of the acetabular component was less frequently achieved in females and patients with Type A or C acetabulum compared to Type B [2]. Our findings were similar as there were more acetabulum Dorr Type A and C acetabula in the loosening group.…”

Section: Discussionsupporting

confidence: 85%

“…Our findings support this, as the loosened components were more vertical and less anteverted as compared to controls. Carcia-Rey et al also noted that change in the rotation centre of the hip by more than 3 mm was associated with a higher rate of screw usage in the acetabular component and they suggest that this was a sign of inadequate press-fit of the acetabular component [2]. In our study, the hip rotation centre was changed more often in the control group than in the acetabular component loosening group.…”

Section: Discussionsupporting

confidence: 62%

“…In a recent study of 80 metal-on-metal hips that underwent acetabular revision, 92.5% of revisions were performed within 3 years after the index surgery [3]. Aseptic loosening of a cementless hemispherical acetabular component has been reported as one of the leading modes of early failure [2,3]. The morphology of the acetabulum, comorbidities affecting bone quality and errors in surgical technique have been postulated to affect the osseointegration of the cementless component [4].…”

Section: Discussionmentioning

confidence: 99%

“…Aseptic loosening of the hemispherical acetabular components was recently shown to be one of the leading causes of early failure of primary THA [2,3]. Various factors such as bone quality, female gender and geometry of the acetabulum have been postulated as factors influencing primary fixation of the cementless acetabular component [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Early aseptic loosening of cementless monoblock acetabular components

Miettinen

Mäkinen

Laaksonen

et al. 2016

International Orthopaedics (SICOT)

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Purpose: Early aseptic loosening of cementless monoblock acetabular component is a rare complication of total hip arthroplasty (THA) and hip resurfacing arthroplasty (HRA). The purpose of this study was to evaluate the incidence and risk factors for early aseptic loosening of the cementless monoblock acetabular components.Methods: This retrospective analysis consisted of 4043 cementless hip devices (3209 THAs and 834 HRAs). We identified forty-one patients with early aseptic loosening of the acetabular component.A control group of 123 patients without acetabular component loosening was randomly selected.The demographic data and risk factors for loosening of the acetabular component were evaluated.The mean follow-up time was 4.6 (range, 1.7-7.8) years. The end-point was acetabular revision.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 85%

Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Early aseptic loosening of cementless monoblock acetabular components

Miettinen

Mäkinen

Laaksonen

et al. 2016

International Orthopaedics (SICOT)

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Influence of acetabular cup thickness on seating and primary stability in total hip arthroplasty

Ruhr

Baetz

Pueschel

et al. 2021

Journal Orthopaedic Research

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Insufficient primary stability of acetabular hip cups is a complication resulting in early cup loosening. Available cup designs vary in terms of wall thickness, potentially affecting implant fixation. This study investigated the influence of different wall thicknesses on the implantation process and the resulting primary stability using excised human acetabula. Implantations were performed using a powered impaction device providing consistent energy with each stroke. Two different wall thicknesses were compared in terms of seating progress, polar gap remaining after implantation, bone‐to‐implant contact area, cup deflection, and lever out moment. Thin‐walled cups showed higher lever out resistance (p < 0.001) and smaller polar gaps (p < 0.001) with larger bone contact toward the dome of the cup (p < 0.001) compared to thick‐walled cups. Small seating steps at the end of the impaction process were observed if a high number of strokes were needed to seat the cup (p = 0.045). A high number of strokes led to a strain release of the cup during the final strokes (p = 0.003). This strain release is indicative for over‐impaction of the cup associated with bone damage and reduced primary stability. Adequate cup seating can be achieved with thin‐walled cups with lower energy input in comparison to thicker ones. Thin‐walled cups showed improved primary stability and enable implantation with lower energy input, reducing the risk of over‐impaction and bone damage. Additional strokes should be avoided as soon as no further seating progress has been observed.

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Effect of screw fixation on acetabular component alignment change in total hip arthroplasty

Fujishiro

Hayashi

Kanzaki

et al. 2014

International Orthopaedics (SICOT)

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Purpose The use of screws can enhance immediate cup fixation, but the influence of screw insertion on cup position has not previously been measured. The purpose of this study was to quantitatively evaluate the effect of intra-operative screw fixation on acetabular component alignment that has been inserted with the use of a navigation system. Methods We used a navigation system to measure cup alignment at the time of press-fit and after screw fixation in 144 hips undergoing total hip arthroplasty. We also compared those findings with factors measured from postoperative radiographs. Results The mean intra-operative change of cup position was 1.78°for inclination and 1.81°for anteversion. The intraoperative change of anteversion correlated with the number of screws. The intra-operative change of inclination also correlated with medial hip centre. Conclusion The insertion of screws can induce changes in cup alignment, especially when multiple screws are used or if a more medial hip centre is required for rigid acetabular fixation.

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Cup Press Fit in Uncemented THA Depends on Sex, Acetabular Shape, and Surgical Technique

Abstract: Level II, prognostic study. See Instructions for Authors for a complete description of levels of evidence.

Cited by 35 publications

References 40 publications

Early aseptic loosening of cementless monoblock acetabular components

Early aseptic loosening of cementless monoblock acetabular components

Influence of acetabular cup thickness on seating and primary stability in total hip arthroplasty

Effect of screw fixation on acetabular component alignment change in total hip arthroplasty

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