Effect of superior and superolateral relocations of the hip center on hip joint forces

Doehring, Todd C.; Rubash, Harry E.; Shelley, Franz J.; Schwendeman, Leslie J.; Donaldson, Thomas; Navalgund, Y.A.

doi:10.1016/s0883-5403(96)80008-8

Cited by 110 publications

(62 citation statements)

References 23 publications

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“…There is no consensus regarding the value of this technique. Previous experimental studies [8,18,37] suggest the HHC is a mechanically unacceptable hip position. Clinical studies [3,9,25] have shown high and especially lateral cup placement results in elevated rates of loosening and polyethylene (PE) wear.…”

Section: Introductionmentioning

confidence: 99%

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

Christodoulou¹,

Dialetis²,

Christodoulou

2010

Clinical Orthopaedics &Amp; Related Research

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Background The high hip center technique used for a deficient acetabulum is reconstruction of the hip at a high center of rotation. In the literature, there is no consensus regarding the value of this technique. Questions/purposes We investigated whether the newgeneration biconical threaded Zweymüller 1 cup fixed in a high nonanatomic position in patients with arthritis secondary to congenital hip disease experienced different rates of polyethylene wear and long-term survivorship when compared with anatomically positioned cups. Patients and Methods We studied the polyethylene wear rate and Kaplan-Meier survivorship of 104 titanium threaded Zweymüller 1 cups in 88 patients (81 females), placed in 70 hips at near-normal hip center and in 34 hips at a high hip center position at a distance of 31.1 to 60 mm (mean, 39.7 mm) from the interteardrop line. Minimum followup was 2 years (mean ± SD, 8.6 ± 3.5 years; range, 2-15 years). ResultsThe mean linear polyethylene wear rates in the near-normal and high hip center groups were not different (0.110 ± 0.050 mm and 0.113 ± 0.057 mm, respectively

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Section: Introductionmentioning

confidence: 99%

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

Christodoulou¹,

Dialetis²,

Christodoulou

2010

Clinical Orthopaedics &Amp; Related Research

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“…The effects of gait on hip loading are not as well understood as the effects of joint positioning, [6][7][8][9][10][11][12][13][14][15][16][17][18][19] even though gait deficits after THR have been repeatedly observed. [20][21][22][23] Joint positions linked to high forces or adverse THR outcome include superior or lateral hip joint center, a small abductor moment arm, and a small offset.…”

mentioning

confidence: 99%

“…The hypothesis was that gait parameters would be better predictors of implant force (peak contact forces and peak twisting moment during walking) than joint positioning parameters. The joint positioning parameters, selected based on the literature, [6][7][8][9][10][11][12][13][14][15][16][17][18][19] were the horizontal and vertical position of the hip center, the length of the abductor moment arm, and the offset. The hypothesis was tested using standard gait analysis techniques, clinical radiographs, and a parametric hip force model.…”

mentioning

confidence: 99%

Relative importance of gait vs. joint positioning on hip contact forces after total hip replacement

Foucher

Hurwitz

Wimmer

2009

Journal Orthopaedic Research

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Implant loosening is a common indication for total hip replacement (THR) revision. High contact forces and implant twisting moments are thought to be associated with implant loosening. Relationships between joint positioning and hip forces, or outcomes, have been investigated through in vivo and in vitro modalities. Relationships between hip forces and gait are less understood, despite repeated findings that gait following a THR does not fully return to normal. We tested the hypothesis that gait parameters would be better predictors of implant force (peak contact forces and peak twisting moment during walking) than joint positioning parameters. Subjects underwent gait analysis, hip force modeling, and measurement of clinical radiographs 1 year after successful THR surgery. Gait parameters were consistently more influential in determining hip forces. Alone, gait explained as much as 67% of the variation in force, compared to a maximum of 33% by joint geometry. Combinations of gait and joint positioning parameters together explained up to 86% of the variation in hip force parameters. Results suggest that gait may provide a valuable postoperatively modifiable target to improve hip loads and potentially reduce the risk for implant loosening. ß

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“…Previous studies investigated acetabular cup orientation and position following THA using plain radiographs and 2D) computed tomography (CT) images [9][10][11]. Lewinnek et al suggested a safe zone of cup orientation to reduce the dislocation rate [9].…”

Section: Introductionmentioning

confidence: 99%

“…Lewinnek et al suggested a safe zone of cup orientation to reduce the dislocation rate [9]. Superolateral relocation of the acetabular cup was found to cause a significant increase in hip joint force [10] and was associated with increased acetabular failure [11]. Recently, investigators proposed optimising combined anteversion [12] (sum of acetabular and femoral anteversion) to reduce THA dislocation rates.…”

Section: Introductionmentioning

confidence: 99%

Does total hip arthroplasty restore native hip anatomy? Three-dimensional reconstruction analysis

Tsai

Dimitriou

et al. 2014

International Orthopaedics (SICOT)

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Purpose Component orientations and positions in total hip arthroplasty (THA) are important parameters in restoring hip function. However, measurements using plain radiographs and 2D computed tomography (CT) slices are affected by patient position during imaging. This study used 3D CT to determine whether contemporary THA restores native hip geometry. Methods Fourteen patients with unilateral THA underwent CT scan for 3D hip reconstruction. Hip models of the nonoperated side were mirrored with the implanted side to quantify the differences in hip geometry between sides. Results The study demonstrated that combined hip anteversion (sum of acetabular and femoral anteversion) and vertical hip offset significantly increased by 25.3°±29.3°( range, −25.7°to 55.9°, p=0.003) and 4.1±4.7 mm (range, −7.1 to 9.8 mm, p=0.009) in THAs. Conclusions These data suggest that hip anatomy is not fully restored following THA compared with the contralateral native hip.

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Effect of superior and superolateral relocations of the hip center on hip joint forces

Cited by 110 publications

References 23 publications

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

High Hip Center Technique Using a Biconical Threaded Zweymüller® Cup in Osteoarthritis Secondary to Congenital Hip Disease

Relative importance of gait vs. joint positioning on hip contact forces after total hip replacement

Does total hip arthroplasty restore native hip anatomy? Three-dimensional reconstruction analysis

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