Primary stability of cementless threaded acetabular cups at first implantation and in the case of revision regarding micromotions as indicators

Bürkner, A.; Fottner, Andreas; Lichtinger, Thomas; Teske, Wolfram; Vogel, Tobias; Jansson, Volkmar; Pellengahr, Christoph von Schulze

doi:10.1515/bmt-2011-0066

Cited by 9 publications

(7 citation statements)

References 22 publications

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“…Good long-term results refer Busch et al [18] of 73 threaded cups under 50 years of age. Another study [19], refers the extent of micromotions between implant and acetabulum is an indicator of primary stability and that over degree Paprosky 3b these implants could not be placed appropriately, which we advocate. FAI both types are inally resolved by a THR and indicated much earlier than primary arthrosis.…”

Section: Discussionmentioning

confidence: 87%

Final solution in femoroacetabular impingement - Threaded cups in hip revision surgery 2002-2012

Magerský¹

2018

J Sports Med Ther

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Purpose: Here, we report the complications of endoprosthesis with threaded cups according to our application in cases of complicated acetabulum (hip revisions and femoroacetabular impingement (FAI)). Methods: A total of 504 patients was analyzed, including 189 men and 315 women. For re-implanted patients (n = 49), the mean time to re-implantation was 6.3 years and the average age at re-implantation was 54.7 years. For censored patients (n = 455), the mean time to censoring was 5.5 years and the average age of the implant was 55.7 years. Among the patients that were censored, 77 died and 378 patients did not experience an event necessitating re-implantation. Results: For the total study population, the Kaplan-Meier estimate of 5 year survival is 0.94 and of 10 year survival is 0.85. 90% of the implants survived 7 years, 80% of the implants survived almost 12 years and 70% of implants survived almost 15 years. Kaplan-Meier survival analysis suggests that men have higher survival than women. Age of the patient at the time of implant was not a statistically signifi cant factor for re-implantation (p value = 0.21) but sex was (p value = 0.02). Women had 2.25 times more risk of being re-implanted than men. Conclusions: In our case series, the failure rate, as a result of aseptic loosening, was 7.4% (n = 51). More than half the failure cases (56%) required re-implantation. Over one-third (37%) of the primary arthrosis cases, were found to be FAI, lessening the frequency of diagnosis of the former. In our clinic, the threaded cup seems to be indispensable in hip revision surgery and in treating FAI.

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Section: Discussionmentioning

confidence: 87%

Final solution in femoroacetabular impingement - Threaded cups in hip revision surgery 2002-2012

Magerský¹

2018

J Sports Med Ther

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“…The following information was deemed appropriate for inclusion: (1) basic information including the first author's surname, year of publication, and country of origin; (2) specimen information including the number of femurs and donors, age and gender of donors, and femoral osteotomy based on cadaver specimens; (3) composite femur information including characteristics and femoral osteotomy based on composite specimens; (4) implant information including brand, coating, characteristics, material testing machine, and test jig; (5) loading information including action and anatomical features of simulation, load force, femur orientation, and test cycles; and (6) micromotion of 13 measurement points (P1, P5, and P9 at the anterior direction in the proximal, middle, and distal part of femoral stem; P2, P6, and P10 at the posterior direction in the proximal, middle, and distal part of femoral stem, respectively; P3, P7, and P11 at the medial direction in the proximal, middle, and distal part of femoral stem; P4, P8, and P12 at the lateral direction in the proximal, middle, and distal part of femoral stem; P13 at the tip of femoral stem) ( Fig. 1).…”

Section: Data Extraction and Quality Assessmentmentioning

confidence: 99%

“…Currently, biomechanical tests are usually performed on synthetic or cadaveric specimens to evaluate the fixation stability of orthopedic implants at the hip, shoulder, and radius and for tendon repairs using bone anchoring devices [1][2][3][4][5][6]. In vitro investigations represent a decisive part in preclinical testing of cementless implants [7].…”

Section: Introductionmentioning

confidence: 99%

Comparisons of the surface micromotions of cementless femoral prosthesis in the horizontal and vertical levels: a network analysis of biomechanical studies

Wang

Dong

et al. 2020

J Orthop Surg Res

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Background: Numerous quantitatively biomechanical studies measuring the fixation stability of femoral stem using micromotions at the bone-implant interfaces in different directions and levels remain inconclusive. This network meta-analysis performed systematically aims to explore the rank probability of micromotions at the bone-implant interfaces based on biomechanical data from studies published. Methods: Two electronic databases, PubMed/MEDLINE and Embase, were utilized to retrieve biomechanical studies providing the data of micromotions at the bone-stem interfaces. After screening and diluting out, the studies that met inclusion criteria will be utilized for statistical analysis. In order to contrast the stability of commonness and differences of the different parts of the femoral stem, the horizontal and vertical comparison of micromotions at the bone-implant interfaces were conducted using the pooled evaluation indexes including the mean difference (MD) and the surface under the cumulative ranking (SUCRA) curve, while inconsistency analysis, sensitivity analysis, subgroup analyses, and publication bias were performed for the stability evaluation of outcomes. Results: Screening determined that 20 studies involving a total of 249 samples were deemed viable for inclusion in the network meta-analysis. Tip point registered the highest micromotions of 13 measurement points. In the horizontal level, the arrangements of 4 measurement points at the proximal (P1-P4), middle (P5-P8) and distal part of the stem (P9-P12

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“…In RTHA, deciding whether using a cup alone can provide primary stability is critical in preoperative planning [ 13 , 20 , 21 ]. For surgeons, this may affect the surgical preparation and judgment of the difficulty of the surgery.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the feasibility of acetabular cup pre-determination in revision total hip arthroplasty via X-ray of the bone stock of the anterosuperior acetabulum

et al. 2021

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Purpose This study was aimed to explore (1) location on AP pelvic X-ray that displayed bone stock in anterosuperior acetabulum; (2) whether X-ray could provide enough evidence to evaluate whether bone stock could provide support for acetabular cup; (3) criteria to determine whether anterosuperior bone stock could provide sufficient support for cup on X-ray. Methods Our study retrospectively collected 43 patients who underwent revision THA for cup loosening from 2014 to 2019. The position of anterosuperior acetabular bone stock was compared between X-ray and CT-based 3-D reconstruction. Seventy-millimeter acetabular cup was implanted simulatively to obtain the contact line between acetabular cup and superolateral remaining bone stock. The contact line length and the angle were measured. Patients were divided into cup group and cage group, and ROC curves of both contact line length and angle were drawn. Results The superolateral part of acetabulum on X-ray could reflect the anterosuperior host bone stock of acetabulum according to the comparison of anteroposterior pelvic X-ray and 3-D reconstruction. Critical point was chosen when we got the highest sensitivity with a 100% specificity in ROC curves. The critical values of contact length and angle were 15.58 mm and 25.5°. Conclusions Surgeons could assess the anterosuperior bone stock of acetabulum by AP pelvic X-ray to decide whether revision could be done merely using cup or need customized cage. Clinically, when contact line length was larger than 16 mm or contact angle was larger than 25.5°, adoption of cup could obtain primary stability in the revision surgery in most cases.

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Primary stability of cementless threaded acetabular cups at first implantation and in the case of revision regarding micromotions as indicators

Cited by 9 publications

References 22 publications

Final solution in femoroacetabular impingement - Threaded cups in hip revision surgery 2002-2012

Final solution in femoroacetabular impingement - Threaded cups in hip revision surgery 2002-2012

Comparisons of the surface micromotions of cementless femoral prosthesis in the horizontal and vertical levels: a network analysis of biomechanical studies

Evaluation of the feasibility of acetabular cup pre-determination in revision total hip arthroplasty via X-ray of the bone stock of the anterosuperior acetabulum

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