Tresca Stress Simulation of Metal-on-Metal Total Hip Arthroplasty during Normal Walking Activity

The selection of biomaterials for bearing in total hip arthroplasty is very important to avoid various risks of primary postoperative failure for patients. The current investigation attempts to analyze the Tresca stress of metal-on-metal bearings with three different materials, namely, cobalt chromium molybdenum (CoCrMo), stainless steel 316L (SS 316L), and titanium alloy (Ti6Al4V). We used computational simulations using a 2D axisymmetric finite element model to predict Tresca stresses under physiological conditions of the human hip joint during normal walking. The simulation results show that Ti6Al4V-on-Ti6Al4V has the best performance to reduce Tresca stress by 45.76% and 39.15%, respectively, compared to CoCrMo-on-CoCrMo and SS 316L-on-SS 316L.

Download Full-text

The Relationship Between Cobalt/Chromium Ratios and the High Prevalence of Head-Stem Junction Corrosion in Metal-on-Metal Total Hip Arthroplasty

The Journal of Arthroplasty ◽

10.1016/j.arth.2015.11.014 ◽

2016 ◽

Vol 31 (5) ◽

pp. 1123-1127 ◽

Cited By ~ 36

Author(s):

Harry S. Hothi ◽

Reshid Berber ◽

Robert K. Whittaker ◽

Gordon W. Blunn ◽

John A. Skinner ◽

...

Keyword(s):

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Cobalt Chromium ◽

Total Hip ◽

Metal On Metal ◽

High Prevalence ◽

The Relationship

Download Full-text

Elevated Cobalt, Chromium and Molybdenum Levels in Peripheral Blood Have No Effect on the Development of Heterotopic Ossifications after Metal-on-Metal Total Hip Arthroplasty

Journal of Biomedical Science and Engineering ◽

10.4236/jbise.2016.91004 ◽

2016 ◽

Vol 09 (01) ◽

pp. 25-40 ◽

Cited By ~ 2

Author(s):

Alexander J. Pfister ◽

Karl-Heinz Widmer ◽

Niklaus F. Friederich ◽

Martin Majewski

Keyword(s):

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Peripheral Blood ◽

Cobalt Chromium ◽

Total Hip ◽

Heterotopic Ossifications ◽

Metal On Metal

Download Full-text

Small-head metal on metal total hip arthroplasty is associated with a high rate of complication and reoperation at mid-term follow-up

SAGE Open Medicine ◽

10.1177/20503121211014707 ◽

2021 ◽

Vol 9 ◽

pp. 205031212110147

Author(s):

Nobuhiko Sumiyoshi ◽

Kazuhiro Oinuma ◽

Yoko Miura

Keyword(s):

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Adverse Reactions ◽

Small Diameter ◽

High Rate ◽

Metal Debris ◽

Total Hip ◽

Metal On Metal ◽

Small Head

Background: Adverse reactions to metal debris are significant complications after metal-on-metal total hip arthroplasty. Recently, late appearances of adverse reactions to metal debris and subsequent need for reoperations have been reported with small-diameter head metal-on-metal devices. We retrospectively investigated mid-term clinical outcomes of small-head metal-on-metal total hip arthroplasty. Methods: We reviewed 159 hips in 139 patients who had a small-head metal-on-metal total hip arthroplasty (M2a Taper; Biomet, Warsaw, IN) with a minimum 5-year follow-up and documented postoperative complications. Results: Focal osteolysis in either the femur or acetabulum was observed in 12 hips (7.5%, 44 months after surgery on average), with pseudotumor observed in 8 hips (5%, 120 months after surgery on average). Four hips (2.5%) had dislocations (84 months after surgery on average) and six hips (3.8%, 122 months after surgery on average) underwent reoperation. Conclusion: Small-head metal-on-metal total hip arthroplasty is associated with a high degree of complications at mid-term follow-up period. Considering this, we discourage the use of metal-on-metal total hip arthroplasty regardless of head size.

Download Full-text