Forty years ago, Lewinnek et al [
[1]
] published their work entitled “Dislocation after Total Hip-Replacement Arthroplasties”.
The authors suggested “that there is a relatively safe range of orientations for the
cup. A number of such ranges were investigated,” and the range of 40° ± 10° of lateral
opening and 15° ± 10° of anteversion “proved most satisfactory.” In that article,
the authors published a figure (Fig. 4) [
[1]
] of a scatter diagram of the orientation of the acetabular components studied with
a superimposed square depicting the area, in which the “most satisfactory” cup position
was depicted. Over the last 4 decades, this has been referred to as the “Lewinnek
safe zone” for cup placement in total hip arthroplasty (THA). The article has been
cited in close to 2000 publications in the English language [
[2]
].scholar.google.com
Date accessed: October 29, 2018
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References
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- (Website:)scholar.google.comDate accessed: October 29, 2018
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- Dislocation of a primary total hip arthroplasty is more common in patients with a lumbar spinal fusion.Bone Joint J. 2017; 99-B: 585-591
- Abnormally high dislocation rates of total hip arthroplasty after spinal deformity surgery.J Arthroplasty. 2016; 31: 2884-2885
- Sugano 367 N: Risk of edge-loading and prosthesis impingement due to posterior pelvic tilting after total hip arthroplasty.Clin Biomech. 2014; 29: 607-613
- Late dislocation following total hip arthroplasty: spinopelvic imbalance as a causative factor.J Bone Joint Surg Am. 2018; 100: 1845-1853
Article info
Publication history
Accepted:
October 30,
2018
Received:
October 30,
2018
Footnotes
One or more of the authors of this paper have disclosed potential or pertinent conflicts of interest, which may include receipt of payment, either direct or indirect, institutional support, or association with an entity in the biomedical field which may be perceived to have potential conflict of interest with this work. For full disclosure statements refer to https://doi.org/10.1016/j.arth.2018.10.035.
Identification
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© 2018 Elsevier Inc. All rights reserved.
