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The use of constrained components in total hip arthroplasty.

Publication ,  Journal Article
Lachiewicz, PF; Kelley, SS
Published in: J Am Acad Orthop Surg
2002

The use of a constrained component may be appropriate for the surgical treatment of recurrent dislocation due to soft-tissue insufficiency following a total hip arthroplasty. Constrained components usually include a locking mechanism incorporated into the polyethylene acetabular liner to keep the prosthetic femoral head in place. Two different prosthetic designs are available and have been approved by the U.S. Food and Drug Administration. The S-ROM constrained component uses additional polyethylene in the rim, which deforms to more fully capture the femoral head and then is held in place by a metal locking ring. The Howmedica Osteonics constrained component is a tripolar device; its bipolar component articulates with another polyethylene liner. These constrained components transfer hip forces that would otherwise lead to dislocation to the locking mechanism, the liner-shell interface, or the bone-prosthesis interface. These forces may eventually contribute to failure of the component due to loosening, dissociation, breakage, or recurrent dislocation. Studies of these components show a failure rate of 4% to 29% at relatively short-term follow-up.

Duke Scholars

Published In

J Am Acad Orthop Surg

DOI

ISSN

1067-151X

Publication Date

2002

Volume

10

Issue

4

Start / End Page

233 / 238

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Recurrence
  • Prosthesis Failure
  • Prosthesis Design
  • Polyethylene
  • Orthopedics
  • Joint Dislocations
  • Humans
  • Hip Prosthesis
  • Biomechanical Phenomena
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Lachiewicz, P. F., & Kelley, S. S. (2002). The use of constrained components in total hip arthroplasty. J Am Acad Orthop Surg, 10(4), 233–238. https://doi.org/10.5435/00124635-200207000-00001
Lachiewicz, Paul F., and Scott S. Kelley. “The use of constrained components in total hip arthroplasty.J Am Acad Orthop Surg 10, no. 4 (2002): 233–38. https://doi.org/10.5435/00124635-200207000-00001.
Lachiewicz PF, Kelley SS. The use of constrained components in total hip arthroplasty. J Am Acad Orthop Surg. 2002;10(4):233–8.
Lachiewicz, Paul F., and Scott S. Kelley. “The use of constrained components in total hip arthroplasty.J Am Acad Orthop Surg, vol. 10, no. 4, 2002, pp. 233–38. Pubmed, doi:10.5435/00124635-200207000-00001.
Lachiewicz PF, Kelley SS. The use of constrained components in total hip arthroplasty. J Am Acad Orthop Surg. 2002;10(4):233–238.

Published In

J Am Acad Orthop Surg

DOI

ISSN

1067-151X

Publication Date

2002

Volume

10

Issue

4

Start / End Page

233 / 238

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Recurrence
  • Prosthesis Failure
  • Prosthesis Design
  • Polyethylene
  • Orthopedics
  • Joint Dislocations
  • Humans
  • Hip Prosthesis
  • Biomechanical Phenomena