scholarly journals Remplissage of the Femoral Head-Neck Junction in Revision Hip Arthroscopy: A Technique to Correct Excessive Cam Resection

2016 ◽  
Vol 5 (6) ◽  
pp. e1209-e1213 ◽  
Author(s):  
Jonathan M. Frank ◽  
Jorge Chahla ◽  
Justin J. Mitchell ◽  
Eduardo Soares ◽  
Marc J. Philippon
Keyword(s):  
Femoral Head ◽  
Hip Arthroscopy ◽  
Cam Resection ◽  
Head Neck ◽  
Neck Junction

The Effect of Resection Size in the Treatment of Cam-Type Femoroacetabular Impingement in the Typical Patient With Hip Arthroscopy: A Biomechanical Analysis

2020 ◽  
Vol 48 (12) ◽  
pp. 2897-2902
Author(s):  
John C. Bonano ◽  
Adam Johannsen ◽  
Rodrigo M. Mardones ◽  
Andrew Fithian ◽  
Hunter Storaci ◽  
...  
Keyword(s):  
Femoral Head ◽  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Hip Arthroscopy ◽  
Peak Load ◽  
Average Energy ◽  
Biomechanical Analysis ◽  
Neck Fracture ◽  
Head Neck ◽  
Neck Junction

Background: Arthroscopic osteochondroplasty may improve range of motion and relieve pain in patients with symptomatic hip impingement. Femoral neck fracture is a risk of this procedure because of the weakening of the proximal femur. To our knowledge, there are no biomechanical studies in young human cadaveric bone evaluating the effect of osteochondroplasty on femoral neck strength. Purpose/Hypothesis: The purpose was to evaluate loads to fracture in young human cadavers after resection depths of 25% and 40% at the head-neck junction. We hypothesized that both depths will maintain ultimate loads to failure above previously published loads, as well as above physiologic weightbearing loads. Study Design: Descriptive laboratory study. Methods: Cadaveric proximal femoral specimens (6 matched pairs, under the age of 47 years) were divided into 2 groups: 25% or 40% of the diameter at the head-neck junction was resected. The length of the resection was 2 cm and the width of the resection was determined by the length of the anterolateral quadrant at the head-neck junction in all cases. A compressive load was applied directly to the femoral head. Peak load, stiffness, and energy to fracture were compared between groups. Results: The average peak load to fracture after 25% resection (7347 N) was significantly higher than after the 40% resection (5892 N) ( P = .010). The average energy to fracture was also significantly higher in the 25% resection group (30.2 J vs 19.2 J; P = .007). The average stiffness was higher in the 25% group, although not statistically significant ( P = .737). Conclusion: Resection depths of 25% and 40% at the anterolateral quadrant of the femoral head-neck junction may be safe at previously described functional loads such as standing and walking in the age range more typically seen in patients undergoing hip arthroscopy. Loads to fracture were significantly higher than previously reported using older cadaveric specimens. Clinical Relevance: Currently, most surgeons limit weightbearing after femoral osteochondroplasty in part because of risk of femoral neck fracture. Given the higher observed loads to fracture, young patients could possibly bear weight sooner after surgery, although postoperative protocols should be individualized based on patient age, weight, bone density, amount of bone resected, concomitant procedures, and potential compliance with activity restrictions.

scholarly journals Do Normal Radiographs Exclude Asphericity of the Femoral Head-Neck Junction?

2008 ◽  
Vol 467 (3) ◽  
pp. 651-659 ◽  
Author(s):  
Marcel Dudda ◽  
Christoph Albers ◽  
Tallal Charles Mamisch ◽  
Stefan Werlen ◽  
Martin Beck
Keyword(s):  
Femoral Head ◽  
Head Neck ◽  
Neck Junction

The contour of the femoral head-neck junction as a predictor for the risk of anterior impingement

2002 ◽  
Vol 84-B (4) ◽  
pp. 556-560 ◽  
Author(s):  
H. P. Nötzli ◽  
T. F. Wyss ◽  
C. H. Stoecklin ◽  
M. R. Schmid ◽  
K. Treiber ◽  
...  
Keyword(s):  
Femoral Head ◽  
Head Neck ◽  
Neck Junction

Femoral head material loss at the head-neck junction in total hip arthroplasty: the effect of head size, stem material and stem offset

2018 ◽  
Vol 29 (6) ◽  
pp. 647-651 ◽  
Author(s):  
Giuseppe Valente ◽  
Brent Lanting ◽  
Steven MacDonald ◽  
Matthew G Teeter ◽  
Douglas Van Citters ◽  
...  
Keyword(s):  
Femoral Head ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Head Size ◽  
Material Loss ◽  
Total Hip ◽  
Femoral Heads ◽  
Measuring Machine ◽  
Head Neck ◽  
Neck Junction

Introduction:Material loss at the head-neck junction in total hip arthroplasty may cause adverse clinical symptoms and implant failure. The purpose of this study was to quantitatively examine the effects of head size, stem material and stem offset on material loss of the head-neck taper interface of a single trunnion design in retrieval implants of metal on polyethylene bearing surfaces.Methods:A retrieval study was performed to identify all 28-mm and 32-mm femoral heads from a single implant/taper design implanted for >2 years. This included n = 56 of the 28-mm heads and n = 23 of the 32-mm heads. The 28-mm femoral heads were matched to 32-mm femoral heads based on time in vivo and head length. A coordinate measuring machine was used to determine maximum linear corrosion depth (MLD). Differences in MLD for head diameter, stem material, and stem offset were determined.Results:There were no differences between groups for age, gender, BMI, or implantation time. There was no difference in MLD between 28 mm and 32 mm matched paired head diameters ( p = 0.59). There was also no difference in MLD between titanium or cobalt-chromium stems ( p = 0.79), and regular or high-offset stems ( p = 0.95).Conclusion:There is no statistical difference in femoral head MLD at the head-neck junction in THA between 28-mm and 32-mm matched paired femoral heads, similar or mixed alloy coupled femoral head stem constructs, and regular or high offset stems.

scholarly journals Head-Neck Taper Corrosion in Hip Arthroplasty

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
S. Hussenbocus ◽  
D. Kosuge ◽  
L. B. Solomon ◽  
D. W. Howie ◽  
R. H. Oskouei
Keyword(s):  
Femoral Head ◽  
Hip Arthroplasty ◽  
Design Feature ◽  
Review Article ◽  
Femoral Head Size ◽  
Leg Length ◽  
Wear Properties ◽  
Femoral Stems ◽  
Head Neck ◽  
Neck Junction

Modularity at the head-neck junction of the femoral component in THA became popular as a design feature with advantages of decreasing implant inventory and allowing adjustment of leg length, offset, and soft tissue balancing through different head options. The introduction of a new modular interface to femoral stems that were previously monoblock, or nonmodular, comes with the potential for corrosion at the taper junction through mechanically assisted crevice corrosion. The incidence of revision hip arthroplasty is on the rise and along with improved wear properties of polyethylene and ceramic, use of larger femoral head sizes is becoming increasingly popular. Taper corrosion appears to be related to all of its geometric parameters, material combinations, and femoral head size. This review article discusses the pathogenesis, risk factors, clinical assessment, and management of taper corrosion at the head-neck junction.

scholarly journals Simultaneous Acetabular Labrum Reconstruction and Remplissage of the Femoral Head–Neck Junction

2019 ◽  
Vol 8 (12) ◽  
pp. e1443-e1449 ◽  
Author(s):  
Luis Perez-Carro ◽  
Natalia Fernández Escajadillo ◽  
Linda Fernández Escajadillo ◽  
Carlos Rodrigo Arriaza ◽  
Manuel Sumillera García ◽  
...  
Keyword(s):  
Femoral Head ◽  
Acetabular Labrum ◽  
Head Neck ◽  
Neck Junction

Variation of the anterior aspect of the femoral head-neck junction in a modern human identified skeletal collection

2013 ◽  
pp. n/a-n/a ◽  
Author(s):  
Nico Radi ◽  
Valentina Mariotti ◽  
Alessandro Riga ◽  
Stefania Zampetti ◽  
Chiara Villa ◽  
...  
Keyword(s):  
Femoral Head ◽  
Modern Human ◽  
Anterior Aspect ◽  
Head Neck ◽  
Neck Junction
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