The Outcomes Following Revision of Monoblock Metal on Metal Acetabular Components for Painful Micromotion in the Absence of Adverse Local Tissue Reaction to Metal

2017 ◽  
Vol 32 (3) ◽  
pp. 915-918
Author(s):  
Sujith Konan ◽  
Donald S. Garbuz ◽  
Bassam A. Masri ◽  
Clive P. Duncan
2020 ◽  
pp. 112070002097927
Author(s):  
Kevin C Ilo ◽  
Harry S Hothi ◽  
John A Skinner ◽  
Alister J Hart

Background: Modularity of metal-on-metal (MoM) implants has come under scrutiny due to concerns regarding additional sources of metal debris. This study is a retrieval analysis of implants from the same manufacturer with the same MoM bearing surface. The difference between the implants was presence or absence of modular junctions. Methods: This is a retrospective study of 31 retrieved implants from 31 patients who received a Conserve Wright Medical MoM hip prosthesis. The 31 implants consisted of 16 resurfacings and 15 implants with modular junctions; 4 conventional THAs and 11 modular-neck THAs. Results: 43% of pre-revision MRI scans performed on resurfacing implants and 91% performed on the modular implants illustrated evidence of an adverse local tissue reaction. There was no difference in pre-revision blood metal ion levels or bearing surface wear between the resurfacings and modular implants. The neck-head tapers of the modular group showed low levels of material loss. However, the neck-stem tapers showed increased severity of corrosion and material loss Conclusions: The modular implants had an increased incidence of adverse local tissue reaction. This could be related to the presence of modular junctions, particular the neck-stem junction which showed increased susceptibly to corrosion


2016 ◽  
Vol 02 (04) ◽  
pp. e113-e118 ◽  
Author(s):  
Amit Shah ◽  
Rajesh Botchu ◽  
David Dunlop ◽  
A. Davies ◽  
Steven James

AbstractAdverse local tissue reaction (ALTR) and pseudoaneurysm formation are rare but known complications following metal-on-metal hip total hip arthroplasty (THA). We report the first known case in the English literature of a concurrent unilateral ALTR and pseudoaneurysm of the superior gluteal artery in the same patient. Following minimal rise in serum metal ions, an ultrasound of the right hip demonstrated an avascular solid/cystic lesion anterolaterally in keeping with an ALTR. More posterolaterally, a second discrete thick-walled cystic lesion was identified. Doppler interrogation demonstrated a “yin yang” pattern suggestive of a pseudoaneurysm. Magnetic resonance imaging confirmed the presence of an anterolateral periarticular lesion with a second discrete lesion within the gluteus medius. Subsequent computed tomography angiography confirmed the presence of arterial contrast blush within the posterior gluteal lesion adjacent to the superior gluteal artery. The patient remains asymptomatic and is being managed conservatively. We review the imaging characteristics of ALTR and pseudoaneurysm occurring post-THA. When a complex solid/cystic lesion is encountered in a patient with a THA, radiologists must ensure that the lesion is interrogated with color Doppler to confidently distinguish a pseudotumor from a pseudoaneurysm. This information is vital to the surgeon to avoid unexpected hemorrhage if revision joint replacement surgery is being contemplated.


Genomics ◽  
2019 ◽  
Vol 111 (6) ◽  
pp. 1404-1411 ◽  
Author(s):  
Christopher G. Salib ◽  
Eric A. Lewallen ◽  
Christopher R. Paradise ◽  
Meagan E. Tibbo ◽  
Joseph X. Robin ◽  
...  

2010 ◽  
Vol 21 (1) ◽  
pp. 19-23 ◽  
Author(s):  
Charles A. Engh ◽  
Henry Ho ◽  
Charles A. Engh ◽  
William G. Hamilton ◽  
Kevin B. Fricka

2015 ◽  
Vol 30 (9) ◽  
pp. 107-109 ◽  
Author(s):  
Thomas K. Fehring ◽  
Joshua L. Carter ◽  
Keith A. Fehring ◽  
Susan M. Odum ◽  
William L. Griffin

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