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Dual mobility acetabular cup for total hip arthroplasty: use with caution.

Abstract Dual-mobility cups were introduced to reduce the incidence of dislocation after total hip arthroplasty (THA). The biomechanics of dual-mobility cups allow for greater range of motion, jump distance and better stability when compared to conventional cups in THA. These cups can be very beneficial in THA particularly when the hip instability is a concern such as elderly patients, obese, hip fracture patients, those with neuromuscular diseases, or patients undergoing revision THA for instability. Areas covered: An extensive search is conducted in PubMed and Google scholar to find past five years publications relevant to dual-mobility cups in THA. 225 articles were found which many of those were excluded because of: written in other languages, nearly same cohort in different journals, unavailable full text, and were not covering main fields of this article. We categorized the articles to four different aspects of the biomechanics, outcomes in primary, revision, and after hip fracture THA. Expert commentary: While the important role of the dual-mobility in addressing recurrent instability and reduction of instability in high risk patients undergoing primary THA has been demonstrated, the concern regarding the release of metal ion release, particularly in the younger and active patients, and prosthetic malfunction are worrisome.
PMID
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Authors

Mayor MeshTerms

Acetabulum

Keywords

Dual-mobility cups

biomechanics

dislocation

review

total hip arthroplasty

Journal Title expert review of medical devices
Publication Year Start




PMID- 28276753
OWN - NLM
STAT- MEDLINE
DA  - 20170309
DCOM- 20170317
LR  - 20170317
IS  - 1745-2422 (Electronic)
IS  - 1743-4440 (Linking)
VI  - 14
IP  - 3
DP  - 2017 Mar
TI  - Dual mobility acetabular cup for total hip arthroplasty: use with caution.
PG  - 237-243
LID - 10.1080/17434440.2017.1292123 [doi]
AB  - INTRODUCTION: Dual-mobility cups were introduced to reduce the incidence of
      dislocation after total hip arthroplasty (THA). The biomechanics of dual-mobility
      cups allow for greater range of motion, jump distance and better stability when
      compared to conventional cups in THA. These cups can be very beneficial in THA
      particularly when the hip instability is a concern such as elderly patients,
      obese, hip fracture patients, those with neuromuscular diseases, or patients
      undergoing revision THA for instability. Areas covered: An extensive search is
      conducted in PubMed and Google scholar to find past five years publications
      relevant to dual-mobility cups in THA. 225 articles were found which many of
      those were excluded because of: written in other languages, nearly same cohort in
      different journals, unavailable full text, and were not covering main fields of
      this article. We categorized the articles to four different aspects of the
      biomechanics, outcomes in primary, revision, and after hip fracture THA. Expert
      commentary: While the important role of the dual-mobility in addressing recurrent
      instability and reduction of instability in high risk patients undergoing primary
      THA has been demonstrated, the concern regarding the release of metal ion
      release, particularly in the younger and active patients, and prosthetic
      malfunction are worrisome.
FAU - Vahedi, Hamed
AU  - Vahedi H
AD  - a Rothman Institute at Thomas Jefferson University , Philadelphia , PA , USA.
FAU - Makhdom, Asim M
AU  - Makhdom AM
AD  - a Rothman Institute at Thomas Jefferson University , Philadelphia , PA , USA.
FAU - Parvizi, Javad
AU  - Parvizi J
AD  - a Rothman Institute at Thomas Jefferson University , Philadelphia , PA , USA.
LA  - eng
PT  - Journal Article
DEP - 20170225
PL  - England
TA  - Expert Rev Med Devices
JT  - Expert review of medical devices
JID - 101230445
SB  - IM
MH  - *Acetabulum
MH  - Arthroplasty, Replacement, Hip/instrumentation/*methods
MH  - Hip Prosthesis/*adverse effects
MH  - Humans
MH  - Prosthesis Failure/*adverse effects
MH  - Risk Factors
OTO - NOTNLM
OT  - Dual-mobility cups
OT  - biomechanics
OT  - dislocation
OT  - review
OT  - total hip arthroplasty
EDAT- 2017/03/10 06:00
MHDA- 2017/03/18 06:00
CRDT- 2017/03/10 06:00
AID - 10.1080/17434440.2017.1292123 [doi]
PST - ppublish
SO  - Expert Rev Med Devices. 2017 Mar;14(3):237-243. doi:
      10.1080/17434440.2017.1292123. Epub 2017 Feb 25.

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