Revision of a BFX total hip replacement stem using a Kyon stem and a head adaptor in two dogs

2017 ◽  
Vol 30 (01) ◽  
pp. 81-87
Author(s):  
Sara Bazzo ◽  
Aldo Vezzoni ◽  
Luca Vezzoni

SummaryObjective: To report revision of BFX cementless press-fit stem loosening with a Kyon cementless stem and a head adaptor in two dogs.Methods: Total hip arthroplasty stem revision was performed in two dogs with loosening of a previously implanted Biomedtrix press-fit BFX stem. Both dogs had a well-integrated BFX cup and single stage revision was performed using a standard Kyon stem and a head adaptor in order to couple with a 17 mm head and maintain the BFX cup.Results: Revisions resulted in a stable functional prosthesis with successful bone integration at the one-year postoperative reevaluation.Conclusions: Use of a Kyon stem with a head adaptor may be a successful option to provide immediate stem stability for revision of a loosened BFX stem with a properly osseo integrated cup.

2011 ◽  
Vol 36 (6) ◽  
pp. 1155-1161 ◽  
Author(s):  
David J. Biau ◽  
Philippe Leclerc ◽  
Simon Marmor ◽  
Valerie Zeller ◽  
Wilfrid Graff ◽  
...  

2020 ◽  
Vol 102-B (7_Supple_B) ◽  
pp. 47-51
Author(s):  
Gregory S. Kazarian ◽  
Derek T. Schloemann ◽  
Toby N. Barrack ◽  
Charles M. Lawrie ◽  
Robert L. Barrack

Aims The aims of this study were to determine the change in the sagittal alignment of the pelvis and the associated impact on acetabular component position at one-year follow-up after total hip arthroplasty (THA). Methods This study represents the one-year follow-up of a previous short-term study at our institution. Using the patient population from our prior study, the radiological pelvic ratio was assessed in 91 patients undergoing THA, of whom 50 were available for follow-up of at least one year (median 1.5; interquartile range (IQR) 1.1 to 2.0). Anteroposterior radiographs of the pelvis were obtained in the standing position preoperatively and at one year postoperatively. Pelvic ratio was defined as the ratio between the vertical distance from the inferior sacroiliac (SI) joints to the superior pubic symphysis and the horizontal distance between the inferior SI joints. Apparent acetabular component position changes were determined from the change in pelvic ratio. A change of at least 5° was considered clinically meaningful. Results Pelvic ratio decreased (posterior tilt) in 54.0% (27) of cases, did not change significantly in 34.0% (17) of cases, and increased (anterior tilt) in 12.0% (6) of cases when comparing preoperative to one-year postoperative radiographs. This would correspond with 5° to 10° of abduction error in 22.0% of cases and > 10° of error in 6.0%. Likewise, this would correspond with 5° to 10° of version error in 22.0% of cases and > 10° of error in 44.0%. Conclusion Pelvic sagittal alignment is dynamic and variable after THA, and these changes persist to the one-year postoperative period, altering the orientation of the acetabular component. Surgeons who individualize the acetabular component placement based on preoperative functional radiographs should consider that the rotation of the pelvis (and thus the component version and inclination) changes one year postoperatively. Cite this article: Bone Joint J 2020;102-B(7 Supple B):47–51.


2003 ◽  
Vol 13 (3) ◽  
pp. 167-176 ◽  
Author(s):  
K. Knahr ◽  
R. Jagsch ◽  
I. Kryspin-Exner

The aim of the study was to evaluate the clinical and psychological situation of total hip arthroplasty (THA) patients before and one year and five years after surgery. Data of 101 patients were available for the one-year and of 69 patients for the five-year follow-up. Quality of Life (QoL) data were collected using the Nottingham Health Profile (NHP), functional capacity comprised patient's self-assessment (Functional Outcome Questionnaire Hannover, FFbH) and surgeon's assessment (Harris Hip Score, HHS). While all dimensions of QoL and functional capacity except social isolation showed significant improvement at the one-year follow-up, only pain scores showed further improvement at the five-year evaluation. Implantation of THA is accompanied by significant increases in QoL and functional capacity. Stabilised scores were found at the five-year evaluation while significant increases could be observed after one year.


2017 ◽  
Vol 99 (17) ◽  
pp. 1428-1437 ◽  
Author(s):  
Joerg Huber ◽  
Paul Dieppe ◽  
Karsten Dreinhoefer ◽  
Klaus-Peter Günther ◽  
Andrew Judge

2012 ◽  
Vol 11 (1) ◽  
pp. 26-34
Author(s):  
Sophia N. Sangiorgio ◽  
Edward Ebramzadeh ◽  
Sean L. Borkowski ◽  
Daniel A. Oakes ◽  
Jeremy J. Reid ◽  
...  

2012 ◽  
Vol 64 (3) ◽  
pp. 415-423 ◽  
Author(s):  
Kristi Elisabeth Heiberg ◽  
Vigdis Bruun-Olsen ◽  
Arne Ekeland ◽  
Anne Marit Mengshoel

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Nils Wirries ◽  
Michael Schwarze ◽  
Dorothea Daentzer ◽  
Michael Skutek

Lumbar spine disorders (LSD) might influence the outcome after total hip arthroplasty (THA). Despite a known common prevalence of LSD and degenerative hip disorders, this study investigates their mutual influence in case of co-existence with the purpose to advance surgeons planning and patient’s prognosis. Patients with and without LSD were compared before and at the one-year postoperative examination. For clinical evaluation the WOMAC was assessed. The radiological analysis focused on cup anteversion and inclination. The total group included 203 consecutive patients. The overall incidence of LSD was 51.0%. Patients with LSD were on average 4.3 years older and had a 1.8 higher BMI than non-LSD patients (P<0.05). The cup positioning and the clinical results were comparable between both groups before and at the last time of follow up (P>0.05). No hip dislocations nor clinical signs of impingement were seen.We can conclude that there is a high degree of co-existence of LSD and hip disorders. However, a strong negative impact of LSD to clinical or radiologic results could not be confirmed in our study.


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