Article
Orthopedics
Paul Kolbitsch, Iris-Melanie Noebauer-Huhmann, Alexander Giurea, Bernd Kubista, Reinhard Windhager, Richard Lass
Summary: This study compared metal ion levels, pseudotumors, clinical, and radiological results in small-head MOM hips over a follow-up period of more than 20 years. The study found good long-term clinical and functional outcomes in patients, with no significant increase in serum metal levels in patients with pseudotumors.
JOURNAL OF ARTHROPLASTY
(2021)
Review
Polymer Science
Liliana Savin, Tudor Pinteala, Dana Nicoleta Mihai, Dan Mihailescu, Smaranda Stefana Miu, Mihnea Theodor Sirbu, Bogdan Veliceasa, Dragos Cristian Popescu, Paul Dan Sirbu, Norin Forna
Summary: Total hip arthroplasty is a popular and effective surgical intervention for treating hip diseases. The success of the surgery depends on factors such as patient characteristics, surgical technique, and the quality of biomaterials used. Recent studies have assessed the benefits and drawbacks of different biomaterial and friction couples in total hip arthroplasty.
Article
Orthopedics
Tahsin M. Rahman, Nicholas B. Frisch, Brian Darrith, Ishan Patel, Craig D. Silverton
Summary: The study compares the incidence of pseudotumors in MoM and non-MoM hip prostheses, finding a higher incidence in MoM. A significant correlation was observed between serum titanium concentration and pseudotumor size.
JOURNAL OF THE AMERICAN ACADEMY OF ORTHOPAEDIC SURGEONS
(2021)
Article
Orthopedics
Maarten C. Koper, Brechtje Hesseling, Wim E. Tuinebreijer, Hans van der Linden, Nina M. C. Mathijssen
Summary: This study followed up 160 patients with primary large head MoM prostheses for 10 years. Results showed that female gender, cup inclination angles over 45 degrees, higher levels of cobalt, and chromium were associated with an increased risk of revision for ARMD. The safe upper limits for cobalt and chromium were determined to be 4.1 ppb and 4.2 ppb, respectively.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Chemistry, Multidisciplinary
Mette Holm Hjorth, Inger Mechlenburg, Frederik Nicolai Foldager, Marianne Tjur, Maiken Stilling
Summary: The study compared muscle mass, power, step test asymmetry, and patient-reported outcomes between MoM THA/HRA and MoP THA, finding no significant differences in functional outcomes.
APPLIED SCIENCES-BASEL
(2022)
Article
Medicine, General & Internal
Adham Ahmed, Yisroel Grabie, Jeffrey Loeffler, Yosef Buchen, Sudeep Acharya
Summary: Total hip arthroplasty (THA) is the preferred treatment for hip joint disorders. While metal-on-metal (MoM) hip implants were popular, subsequent studies found high failure rates and complications. This case report and review discuss the management of a patient with pseudotumor-induced sciatica after MoM THA.
CUREUS JOURNAL OF MEDICAL SCIENCE
(2023)
Article
Medicine, General & Internal
Hiroki Wakabayashi, Masahiro Hasegawa, Yohei Naito, Shine Tone, Akihiro Sudo
Summary: This study assessed the long-term outcomes of total hip arthroplasty with a metal-on-metal acetabular prosthesis, revealing a 29.0% prevalence of pseudotumors and the importance of regular clinical surveillance for early detection of adverse reactions to metal debris.
JOURNAL OF CLINICAL MEDICINE
(2022)
Review
Orthopedics
Che Zheng, Jiawen Xu, Liming Wu, Yuangang Wu, Yuan Liu, Bin Shen
Summary: This study aimed to compare different bearing surfaces after cementless total hip arthroplasty. A network meta-analysis was conducted to assess 64 eligible trials. The findings showed that bearings containing highly cross-linked polyethylene (HXP), vitamin E-infused highly cross-linked polyethylene (HXPE), and ceramic liners demonstrated comparable survivorship and hip function at 5 and 10 years follow-up. Hard-on-hard bearings containing metal had higher serum levels of metal ions.
JOURNAL OF ARTHROPLASTY
(2023)
Article
Medicine, General & Internal
Fabio Mancino, Michael A. Finsterwald, Christopher W. Jones, Gareth H. Prosser, Piers J. Yates
Summary: This study aims to provide an updated analysis of the long-term outcomes and metal ion levels of patients with metal-on-metal hip resurfacing (HR) and large-diameter-head (LDH) total hip arthroplasty (THA). The results showed no significant differences in clinical outcomes between the two groups, but the HR group had significantly lower metal ion levels compared with the modular THA group. Both implants demonstrated excellent survivorship, with the Adept HR showing remarkable reliability in young active males. The modular LDH THA, despite being discontinued, exhibited higher reliability and lower failure rate compared to similar withdrawn MoM implants.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Orthopedics
Joseph J. Kavolus, Alexander L. Lazarides, Christina Moore, Thorsten M. Seyler, Samuel S. Wellman, David E. Attarian, Michael P. Bolognesi, Benjamin A. Alman
Summary: This study aimed to determine if specific immunologic genotypes could predict the need for revision in patients with metal-on-metal total hip implants.
JOURNAL OF ARTHROPLASTY
(2021)
Review
Radiology, Nuclear Medicine & Medical Imaging
Jonelle M. Petscavage-Thomas, Alice Ha
Summary: In the surveillance of ARMD, MRI has been found to be a superior imaging modality compared to ultrasound. MRI is independent of operator skill, provides visualization of soft-tissue details, and enables consistent measurement of fluid collections on follow-up exams. Ultrasound limitations include operator dependence, inability to visualize osseous structures, and challenges in visualizing posterior soft tissues in larger patients.
AMERICAN JOURNAL OF ROENTGENOLOGY
(2021)
Article
Orthopedics
Mette Holm Hjorth, Inger Mechlenburg, Kjeld Soballe, Lone Romer, Stig Storgaard Jakobsen, Maiken Stilling
Summary: This study investigated the influence of the anterolateral and the posterior surgical approaches on the location, grade, and prevalence of pseudotumors and muscle atrophy in metal-on-metal resurfacing hip arthroplasty (MoM RHA). The results showed that pseudotumors were mainly located anterolaterally in the anterolateral group and postero-laterally in the posterior group. Muscle atrophy of the gluteus medius, gluteus minimus, and small external rotators differed between the two groups. Metal-ion concentrations and clinical outcome scores were similar between groups.
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
(2023)
Article
Orthopedics
Derek J. Semaan, Heath Rutledge-Jukes, Keith R. Berend, Adolph V. Lombardi, Joanne B. Adams, David A. Crawford
Summary: This study evaluated the mid-term to long-term survival of a specific metal-on-metal (MoM) implant with a modular titanium taper adapter. The results demonstrate a more favorable survival rate compared to other designs.
JOURNAL OF ARTHROPLASTY
(2022)
Article
Engineering, Biomedical
Francesco Castagnini, Barbara Bordini, Monica Cosentino, Cristina Ancarani, Federica Mariotti, Federico Biondi, Cesare Faldini, Francesco Traina
Summary: Recurrent dislocations remain a common reason for revision in total hip arthroplasty, with ceramic-on-ceramic bearings showing a lower risk of revisions due to dislocation in adjusted models compared to ceramic-on-polyethylene. However, there was no significant difference in the rate of revisions for dislocation between bearings with cross-linked polyethylene and Delta-on-Delta articulations in both unadjusted and adjusted models. Additional studies are needed to draw definitive conclusions about the influence of bearing surfaces on revisions due to dislocations.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2021)
Article
Engineering, Biomedical
Gregory W. Kubacki, Jeremy L. Gilbert
Summary: The study found that under conditions of severe inflammation, the friction currents of metallic orthopedic alloys increased, depending on the energy released and the concentration of hypochlorous acid. The concentration of hypochlorous acid affected the fluctuations in friction current, as the oxidative power of the solution led to the regeneration of an oxide film, possibly resulting in increased release of oxide particles.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2021)
