Impingement Between the Acetabular Cup and the Femoral Neck After Hip Resurfacing Arthroplasty

2011 ◽  
Vol 93 (Suppl 2) ◽  
pp. 99-106 ◽  
Author(s):  
Myung Chul Yoo ◽  
Yoon Je Cho ◽  
Young Soo Chun ◽  
Kee Hyung Rhyu
Keyword(s):  
Femoral Neck ◽  
Hip Resurfacing ◽  
Acetabular Cup ◽  
Hip Resurfacing Arthroplasty ◽  
Resurfacing Arthroplasty

scholarly journals Computational modelling of hip resurfacing arthroplasty investigating the effect of femoral version on hip biomechanics

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0252435
Author(s):  
Jonathan Bourget-Murray ◽  
Ashish Taneja ◽  
Sadegh Naserkhaki ◽  
Marwan El-Rich ◽  
Samer Adeeb ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Contact Pressure ◽  
Contact Area ◽  
Hip Resurfacing ◽  
Acetabular Cup ◽  
Hip Resurfacing Arthroplasty ◽  
Resurfacing Arthroplasty ◽  
Joint Contact ◽  
Hip Flexion ◽  
Joint Contact Pressure

Aim How reduced femoral neck anteversion alters the distribution of pressure and contact area in Hip Resurfacing Arthroplasty (HRA) remains unclear. The purpose of this study was to quantitatively describe the biomechanical implication of different femoral neck version angles on HRA using a finite element analysis. Materials and methods A total of sixty models were constructed to assess the effect of different femoral neck version angles on three different functional loads: 0°of hip flexion, 45°of hip flexion, and 90° of hip flexion. Femoral version was varied between 30° of anteversion to 30° of retroversion. All models were tested with the acetabular cup in four different positions: (1) 40°/15° (inclination/version), (2) 40°/25°, (3) 50°/15°, and (4) 50°/25°. Differences in range of motion due to presence of impingement, joint contact pressure, and joint contact area with different femoral versions and acetabular cup positions were calculated. Results Impingement was found to be most significant with the femur in 30° of retroversion, regardless of acetabular cup position. Anterior hip impingement occurred earlier during hip flexion as the femur was progressively retroverted. Impingement was reduced in all models by increasing acetabular cup inclination and anteversion, yet this consequentially led to higher contact pressures. At 90° of hip flexion, contact pressures and contact areas were inversely related and showed most notable change with 30° of femoral retroversion. In this model, the contact area migrated towards the anterior implant-bone interface along the femoral neck. Conclusion Femoral retroversion in HRA influences impingement and increases joint contact pressure most when the hip is loaded in flexion. Increasing acetabular inclination decreases the area of impingement but doing so causes a reciprocal increase in joint contact pressure. It may be advisable to study femoral neck version pre-operatively to better choose hip resurfacing arthroplasty candidates.

scholarly journals CUSTOMIZED GUIDE FOR FEMORAL COMPONENT POSITIONING IN HIP RESURFACING ARTHROPLASTY

2017 ◽  
Vol 25 (2) ◽  
pp. 103-106
Author(s):  
Chaturong Pornrattanamaneewong ◽  
Rapeepat Narkbunnam ◽  
Keerati Chareancholvanich
Keyword(s):  
Femoral Neck ◽  
Three Dimensional ◽  
Posterior Part ◽  
Image Intensifier ◽  
Hip Resurfacing ◽  
Three Dimensional Model ◽  
Level Of Evidence ◽  
Hip Resurfacing Arthroplasty ◽  
Femoral Neck Axis ◽  
Resurfacing Arthroplasty

ABSTRACT Objective: To prove the accuracy of a customized guide developed according to our method. Methods: This customized guide was developed from a three-dimensional model of proximal femur reconstructed using computed tomography data. Based on the new technique, the position of the guide pin insertion was selected and adjusted using the reference of the anatomical femoral neck axis. The customized guide consists of a hemispheric covering designed to fit the posterior part of the femoral neck. The performance of the customized guide was tested in eight patients scheduled for total hip arthroplasty. The stability of the customized guide was assessed by orthopedic surgeons. An intraoperative image intensifier was used to assess the accuracy. Results: The customized guide was stabilized with full contact and was fixed in place in all patients. The mean angular deviations in relation to the what was planned in anteroposterior and lateral hip radiographs were 0.5º ± 1.8º in valgus and 1.0º ± 2.4º in retroversion, respectively. Conclusion: From this pilot test, the authors suggest that the proposed technique could be applied as a customized guide to the positioning device for hip resurfacing arthroplasty with acceptable accuracy and user-friendly interface. Level of Evidence IV, Cases Series.

Femoral Neck Fracture After Birmingham Hip Resurfacing Arthroplasty

2013 ◽  
Vol 28 (1) ◽  
pp. 147-153 ◽  
Author(s):  
Gulraj S. Matharu ◽  
Callum W. McBryde ◽  
Matthew P. Revell ◽  
Paul B. Pynsent
Keyword(s):  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Hip Resurfacing ◽  
Hip Resurfacing Arthroplasty ◽  
Resurfacing Arthroplasty ◽  
Birmingham Hip Resurfacing ◽  
Neck Fracture

Hip Resurfacing Arthroplasty in Patients with Varus Deformity of the Femoral Neck-Shaft Angle

2011 ◽  
Vol 21 (2) ◽  
pp. 225-230 ◽  
Author(s):  
Graeme S. Carlile ◽  
Christopher P. Wakeling ◽  
Nichola Fuller ◽  
Darren Fern ◽  
Mark R. Norton
Keyword(s):  
Femoral Neck ◽  
Varus Deformity ◽  
Hip Resurfacing ◽  
Hip Resurfacing Arthroplasty ◽  
Neck Shaft Angle ◽  
Resurfacing Arthroplasty ◽  
Shaft Angle

Results of a Stemmed Bone Ingrowth HIP Resurfacing Arthroplasty in the Canine

1985 ◽  
Vol 55 ◽  
Author(s):  
W. C. Kim ◽  
H. Rechl ◽  
H. C. Amstutz ◽  
K. Hermens ◽  
P. F. O'Carroll ◽  
...  
Keyword(s):  
Femoral Head ◽  
Femoral Neck ◽  
Bone Ingrowth ◽  
Stress Shielding ◽  
Load Sharing ◽  
Hip Resurfacing ◽  
Hip Resurfacing Arthroplasty ◽  
Resurfacing Arthroplasty ◽  
Compressive Stresses ◽  
Acetabular Components

ABSTRACTA stemmed bone ingrowth hip resurfacing arthroplasty designed for use with bone deficient femoral heads raises concerns of stress shielding and is investigated in this study. Ten CoCr bone ingrowth hip resurfacing devices were implanted in five adult canines. Design consisted of a 6mm deep cylindrical cavity with porous beaded surface of 150um pore size and Imm nominal depth. A 3mm diameter smooth CoCr stem was eccentrically fixed to the component for additional fixation with threaded nut at the lateral cortex. Femoral head was reamed for interference fit with hole for the stem placed superiorly. Acrylic fixed polyethylene cups were used for acetabular components. Animals were followed with serial radiographs to sacrifice at 73 to 267 days. After sacrifice microradiographs of ground sections and histologic specimens were evaluated for bone ingrowth, remodeling, and femoral neck attenuation. All specimens showed well ingrown bone at the porous layer. Bone remodeling showed preservation of proximal femoral neck cancellous trabecular pattern and medial cortical support. Resorption of bone at the implant rim and femoral neck thinning were, however, present. Two specimens had neck thinning of 10% or less, four of 10 to 25%, three of 25 to 50%, and one greater than 50%. There was no correlation with time to sacrifice for parameters evaluated. Results indicate preservation of the compressive stresses through the femoral head. Resorption of bone at the rim and femoral neck attenuation, however, indicates load sharing between the implant and bone. Though a lower modulus material such as titanium would decrease load sharing, the geometrical design insures the presence of stress distribution anomalies.

scholarly journals Limited range of motion of hip resurfacing arthroplasty due to unfavorable ratio of prosthetic head size and femoral neck diameter

2008 ◽  
Vol 79 (6) ◽  
pp. 748-754 ◽  
Author(s):  
Daniel Kluess ◽  
Carmen Zietz ◽  
Tobias Lindner ◽  
Wolfram Mittelmeier ◽  
Klaus-Peter Schmitz ◽  
...  
Keyword(s):  
Femoral Neck ◽  
Range Of Motion ◽  
Limited Range ◽  
Hip Resurfacing ◽  
Head Size ◽  
Hip Resurfacing Arthroplasty ◽  
Resurfacing Arthroplasty ◽  
Limited Range Of Motion ◽  
Prosthetic Head ◽  
Neck Diameter

Posterior Femoral Neck Impingement Secondary to Excess Acetabular Anteversion in Hip Resurfacing Arthroplasty

2012 ◽  
Vol 27 (8) ◽  
pp. 1580.e9-1580.e11
Author(s):  
Benan M. Dala-Ali ◽  
Matthew Welck ◽  
Ian Osborne ◽  
Sarah K. Muirhead-Allwood
Keyword(s):  
Femoral Neck ◽  
Hip Resurfacing ◽  
Acetabular Anteversion ◽  
Hip Resurfacing Arthroplasty ◽  
Resurfacing Arthroplasty
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