Differences in the setting of acetabular component alignment guides between the supine and lateral positions for total hip arthroplasty

AbstractThe acetabular component orientation in total hip arthroplasty is of critical importance to clinical results. Although navigation systems and surgical robots have been introduced, most surgeons still use acetabular component alignment guides. This study aimed to compare the accuracy between modern acetabular component alignment guides for the lateral position and those for the supine position. Thirteen alignment guides for the lateral position and 10 for the supine position were investigated. All the lateral position alignment guides indicated cup alignment in operative definition, and the supine position alignment guides indicated cup alignment in radiographic definition. For lateral position alignment guides, the anteversion actually indicated by the alignment guide itself was smaller than that indicated by the manufacturer by a mean of 6° (maximum, 9°), and the inclination actually indicated by alignment guides themselves was larger than that by the manufacturer (p < 0.01) by a mean of 2° (maximum, 4°). For supine position alignment guides, the inclination and anteversion indicated by the alignment guide itself were identical with those indicated by the manufacturer. The current study showed that the angles actually indicated and those stated by manufacturers were not identical for lateral position alignment guides.

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Comparison of accuracy of cup position using portable navigation versus alignment guide in total hip arthroplasty in supine position

Hip International ◽

10.1177/1120700020908788 ◽

2020 ◽

pp. 112070002090878 ◽

Cited By ~ 2

Author(s):

Masanori Okamoto ◽

Masashi Kawasaki ◽

Toshiaki Okura ◽

Satoshi Ochiai ◽

Hiroyuki Yokoi

Keyword(s):

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Supine Position ◽

Navigation System ◽

Direct Anterior Approach ◽

Navigation Systems ◽

Total Hip ◽

Navigation Group ◽

Portable Navigation ◽

Alignment Guide

Background: Accelerometer-based portable navigation systems in supine total hip arthroplasty (THA) have been developed, but there are no reports on the accuracy of cup placement. We aimed to investigate and compare the accuracy of the accelerometer-based portable navigation system versus the acetabular alignment guide placed on the pelvis in THA using the direct anterior approach (DAA). Both devices tracked changes in the pelvic position. Methods: In this single-centre, retrospective study, we reviewed 115 hips in 113 patients who underwent primary THA via the DAA using an accelerometer-based portable navigation system in the supine position (portable navigation group) and 106 hips in 101 patients who underwent THA using an acetabular alignment guide (alignment guide group) as controls. Hips were evaluated postoperatively using computed tomography to measure cup orientation. The accuracy of cup orientation was compared between the 2 groups. Results: Absolute values of inclination error were 3.1° ± 2.2° and 2.9° ± 2.3° ( p = 0.708) in the portable navigation and alignment guide groups and those of anteversion error were 2.8° ± 2.3° and 3.7° ± 2.7°, respectively ( p = 0.005). The number of cups placed within 10° of error was 98.3% and 96.2% in the portable navigation and alignment guide groups, respectively ( p = 0.304). The portable navigation group had significantly more hips (72.2%) placed within a 5° margin of error than did the alignment guide group (56.6%) ( p = 0.016). Conclusion: High accuracy in cup placement was achieved using accelerometer-based portable navigation in supine THA. Using a navigation system may contribute to improved long-term outcomes.

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Effect of screw fixation on acetabular component alignment change in total hip arthroplasty

International Orthopaedics ◽

10.1007/s00264-013-2271-0 ◽

2014 ◽

Vol 38 (6) ◽

pp. 1155-1158 ◽

Cited By ~ 6

Author(s):

Takaaki Fujishiro ◽

Shinya Hayashi ◽

Noriyuki Kanzaki ◽

Shingo Hashimoto ◽

Nao Shibanuma ◽

...

Keyword(s):

Total Hip Arthroplasty ◽

Acetabular Component ◽

Hip Arthroplasty ◽

Screw Fixation ◽

Component Alignment ◽

Total Hip

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Accurate Acetabular Component Orientation After Total Hip Arthroplasty Using an Acetabular Alignment Guide

The Journal of Arthroplasty ◽

10.1016/j.arth.2008.10.003 ◽

2010 ◽

Vol 25 (1) ◽

pp. 81-86 ◽

Cited By ~ 12

Author(s):

Toshiya Kanoh ◽

Yukiharu Hasegawa ◽

Tetsuo Masui ◽

Jin Yamaguchi ◽

Kiyoharu Kawabe ◽

...

Keyword(s):

Total Hip Arthroplasty ◽

Acetabular Component ◽

Hip Arthroplasty ◽

Total Hip ◽

Component Orientation ◽

Alignment Guide

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Direct Anterior Approach for Total Hip Arthroplasty in the Lateral Decubitus Position Versus Supine Position: A Random Clinical Trial

10.21203/rs.3.rs-510964/v1 ◽

2021 ◽

Author(s):

Yao Xiao ◽

Zhanglai Li ◽

Feitai Lin ◽

Yiyuan Zhang ◽

Yan Weng ◽

...

Keyword(s):

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Supine Position ◽

Anterior Approach ◽

Direct Anterior Approach ◽

Lateral Position ◽

Lateral Decubitus Position ◽

Population Characteristics ◽

Total Hip ◽

Lateral Decubitus

Abstract Background: Direct anterior approach (DAA）for total hip arthroplasty (THA）could be performed either in the lateral decubitus position or supine position. However, there is an obvious absence of literature regarding the differences, which position may be more conducive to recovery, technically more demanding, associated with component malposition or more complications. Methods: From Jan.1st, 2020 to oct.1st, 2020, 45 patients were recruited for primary unilateral THA using the DAA. In total, 27 patients (60%) underwent THAs using the DAA in the supine position, and 18 patients (40%) in the lateral decubitus position. All surgeries were performed by a high-volume surgeon. Technical information, clinical and radiographic outcomes, SF-12 and patient-reported outcomes such as WOMAC were evaluated. All the date were tested with Generalized Linear Mixed Models Analysis, GLM Repeated Measurement Analysis, Independent samples t-test or Pearson’s chi-square test.Results: There were no differences in Population characteristics before surgery. The operation time, length of stay and blood loss in the LP group and the SP group were no differences. The prosthesis of the two groups were in a good position. pre-operative and the first and third day after the surgery of CK-MB and Hb,pre-operative and the last follow-up of HSS,WOMAC,UCLA,VAS,SF-12,and pre-operation and post-operation of Offset,FA and LLD, all the above indicators show no significant difference. And the incidence of complications in the lateral position was lower than that in the supine position.Conclusion: Both THA via DAA in the lateral decubitus position and in the supine position produced excellent clinical outcomes. From the perspective of the occurrence of complications, we are more inclined to use the lateral position.

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Impingement-free range of movement, acetabular component cover and early clinical results comparing ‘femur-first’ navigation and ‘conventional’ minimally invasive total hip arthroplasty

The Bone & Joint Journal ◽

10.1302/0301-620x.97b7.34729 ◽

2015 ◽

Vol 97-B (7) ◽

pp. 890-898 ◽

Cited By ~ 36

Author(s):

T. Renkawitz ◽

M. Weber ◽

H-R. Springorum ◽

E. Sendtner ◽

M. Woerner ◽

...

Keyword(s):

Total Hip Arthroplasty ◽

Minimally Invasive ◽

Acetabular Component ◽

Hip Arthroplasty ◽

Clinical Results ◽

Range Of Movement ◽

Total Hip ◽

Free Range

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An accelerometer-based navigation system provides acetabular cup orientation accuracy comparable to that of computed tomography-based navigation during total hip arthroplasty in the supine position

10.21203/rs.2.19344/v1 ◽

2019 ◽

Author(s):

Tomonori Tetsunaga ◽

Kazuki Yamada ◽

Tomoko Tetsunaga ◽

Tomoaki Sanki ◽

Yoshi Kawamura ◽

...

Keyword(s):

Computed Tomography ◽

Total Hip Arthroplasty ◽

Hip Arthroplasty ◽

Supine Position ◽

Polyethylene Wear ◽

Anterolateral Approach ◽

Navigation Systems ◽

Acetabular Cup ◽

Total Hip ◽

Significant Difference

Abstract Background: Inadequate acetabular component orientation is associated with postoperative impingement, dislocation, and accelerated polyethylene wear. Computed tomography (CT)-based navigation systems provide accuracy for total hip arthroplasty (THA) but are not available in all facilities. Accelerometer-based navigation systems are inexpensive, but their accuracy remains undetermined. This study compares the accuracy of cup orientation in THA using CT-based and accelerometer-based navigation systems. Methods: This retrospective study included 35 consecutive patients (11 males, 24 females; mean age, 65 years) who underwent primary cementless THA via an anterolateral approach in the supine position. Both CT-based and accelerometer-based navigation systems were used simultaneously. The accuracy of cup orientation was compared between the two systems using postoperative CT. Results: The accuracy of cup inclination was 2.7° ± 2.0° in the CT-based group and 3.3° ± 2.4° in the accelerometer-based group. The accuracy of cup anteversion was 2.8° ± 2.6° in the CT-based group and 3.4° ± 2.2° in the accelerometer-based group. No significant difference was observed in cup inclination ( p = 0.29) or cup anteversion ( p = 0.34) between CT-based and accelerometer-based navigation. Conclusions: The accuracy of cup positioning did not differ significantly between CT-based and accelerometer-based navigation systems.

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