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A new technique for removal of the total hip arthroplasty acetabular component.

Publication ,  Journal Article
Anspach, WE; Lachiewicz, PF
Published in: Clin Orthop Relat Res
July 1991

In revision total hip arthroplasty, an arthrographically loose or migrated cemented or porous ingrowth acetabular component may be found to be quite secure and difficult to remove. An acetabular component that is not loose may need to be removed because of infection or malposition. Based on a previous study of torque failure of cemented and uncemented acetabular components in vitro, a pneumatic impact wrench has been developed that delivers repetitive shear loads to the implant-cement or implant-bone interfaces. Eight acetabular components (three polyethylene, two metal backed, and three porous coated) were implanted with polymethylmethacrylate into fresh, unembalmed human anatomic specimen acetabuli. Seven components were easily removed using this new device at an average setting of 16 kg/m of torque. One polyethylene component could not be removed because the studs cut through polyethylene grooves. In one pelvis, a fracture occurred through a pubic anchoring hole when the driver was taken by error through a 40 degrees arc rather than the recommended 15 degrees arc. This device has been used in vivo in four cases, easily removing the components without damage to the surrounding bone.

Duke Scholars

Published In

Clin Orthop Relat Res

ISSN

0009-921X

Publication Date

July 1991

Issue

268

Start / End Page

152 / 156

Location

United States

Related Subject Headings

  • Surgical Instruments
  • Reoperation
  • Orthopedics
  • Humans
  • Hip Prosthesis
  • Acetabulum
  • 3202 Clinical sciences
  • 1103 Clinical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Anspach, W. E., & Lachiewicz, P. F. (1991). A new technique for removal of the total hip arthroplasty acetabular component. Clin Orthop Relat Res, (268), 152–156.
Anspach, W. E., and P. F. Lachiewicz. “A new technique for removal of the total hip arthroplasty acetabular component.Clin Orthop Relat Res, no. 268 (July 1991): 152–56.
Anspach WE, Lachiewicz PF. A new technique for removal of the total hip arthroplasty acetabular component. Clin Orthop Relat Res. 1991 Jul;(268):152–6.
Anspach, W. E., and P. F. Lachiewicz. “A new technique for removal of the total hip arthroplasty acetabular component.Clin Orthop Relat Res, no. 268, July 1991, pp. 152–56.
Anspach WE, Lachiewicz PF. A new technique for removal of the total hip arthroplasty acetabular component. Clin Orthop Relat Res. 1991 Jul;(268):152–156.
Journal cover image

Published In

Clin Orthop Relat Res

ISSN

0009-921X

Publication Date

July 1991

Issue

268

Start / End Page

152 / 156

Location

United States

Related Subject Headings

  • Surgical Instruments
  • Reoperation
  • Orthopedics
  • Humans
  • Hip Prosthesis
  • Acetabulum
  • 3202 Clinical sciences
  • 1103 Clinical Sciences