Locating the center of rotation of the hip

Fessy, Michel-Henry; Ndiaye, A.; Carret, Jean‐Paul; Fischer, Louis

doi:10.1007/bf01631394

Cited by 39 publications

(24 citation statements)

References 3 publications

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“…Various radiographic measurements have been used to assess hip dysplasia at skeletal maturity [8]. For this study, we selected the following parameters for further analysis: Crowe classification, the centreedge angle (CE), Sharp's angle, the acetabular depth-width ratio (ADR), the femoral head extrusion index (FHEI) and the anatomic hip centre measurement [10][11][12][13][14][15] (Fig. 1-3).…”

Section: Radiological Analysismentioning

confidence: 99%

“…The FHEI was measured to assess the degree of femoral head lateralization over the acetabular edge [13]. The normal range of the FHEI was originally 70-100% but a cut-off value of 75% was subsequently proposed [12,13] The anatomic hip centre was located from the pre-and postoperative radiographs using a method described by Fessy [14], which has been shown to be the most precise method for determination of anatomic centre [8].…”

Section: Radiological Analysismentioning

confidence: 99%

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Early aseptic loosening of cementless monoblock acetabular components

Miettinen

Mäkinen

Laaksonen

et al. 2016

International Orthopaedics (SICOT)

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Purpose: Early aseptic loosening of cementless monoblock acetabular component is a rare complication of total hip arthroplasty (THA) and hip resurfacing arthroplasty (HRA). The purpose of this study was to evaluate the incidence and risk factors for early aseptic loosening of the cementless monoblock acetabular components.Methods: This retrospective analysis consisted of 4043 cementless hip devices (3209 THAs and 834 HRAs). We identified forty-one patients with early aseptic loosening of the acetabular component.A control group of 123 patients without acetabular component loosening was randomly selected.The demographic data and risk factors for loosening of the acetabular component were evaluated.The mean follow-up time was 4.6 (range, 1.7-7.8) years. The end-point was acetabular revision.

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Section: Radiological Analysismentioning

confidence: 99%

Section: Radiological Analysismentioning

confidence: 99%

Early aseptic loosening of cementless monoblock acetabular components

Miettinen

Mäkinen

Laaksonen

et al. 2016

International Orthopaedics (SICOT)

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“…Cette dernière notion reste discutée et les conséquences d'une augmentation de l'offset sur la fixation d'un pivot fémoral n'a pas été largement validée dans la littérature alors qu'il s'agit d'un écueil important [8,9]. Bien que la mesure radiologique soit imparfaite, sous évaluant la valeur de l'offset par rapport à la tomodensitométrie (TDM) [10,11], elle reste le moyen courant permettant la planification et donc la prévision d'utilisation d'une tige disposant d'un offset augmenté [12][13][14]. Ainsi face à une population de fémurs disposant d'un offset augmenté, la capacité de pivots courants à reproduire l'offset au cours d'une planification 2D n'est pas connue avec précision.…”

Section: Introductionunclassified

Planning préopératoire des prothèses de hanches cimentées à fort offset : est-il fiable et influence-t-il la survie ?

Bachour¹,

Marchetti

Bocquet

et al. 2010

Revue de Chirurgie Orthopédique et Traumatologique

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“…Radiographic methods of defining the hip center traditionally have relied on 2-D plain radiography [13,23,25]. One such method used Koehler's line and a line joining the two teardrops on plain AP radiographs [13].…”

Section: Introductionmentioning

confidence: 99%

“…One such method used Koehler's line and a line joining the two teardrops on plain AP radiographs [13]. In another study, the intersection between Koehler's line and a line between the upper rims of the two obturator foramina was used as a reference point.…”

Section: Introductionmentioning

confidence: 99%

Can the Acetabular Position be Derived from a Pelvic Frame of Reference?

Dandachli

Nakhla

Iranpour

et al. 2008

Clin Orthop Relat Res

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Acetabular center positioning has an effect on hip function. However, reported clinical and plain radiographic methods are inaccurate and unreliable for ascertaining acetabular implant location. In an exploratory study we asked whether the normal acetabular position can be derived from simple radiographically measurable pelvic dimensions. We analyzed computed tomographic scans of 37 normal hips using a pelvic frame of reference centered on the ipsilateral anterior-superior iliac spine. We defined the x-, y-, and z-coordinates of the hip center (C x ,C y ,C z ) as a percentage of the corresponding pelvic dimensions (D x ,D y ,D z ). C x /D x averaged 9%, C y /D y 34%, and C z /D z 37%. These ratios had narrow distributions with small confidence intervals. Interobserver agreement tests showed a mean intraclass correlation coefficient of 0.95. We observed gender differences in the ratios of as much as 4%, which correspond to differences of as much as 9 mm in the hip center position. The ratios provide a simple and reliable way of deriving the normal position of the hip center from the pelvic dimensions alone. This gives the surgeon a simple way of planning where the hip center should be and may be particularly helpful in revision hip arthroplasty or in cases involving extensive osteophytes, dysplasia, or protrusio.

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Locating the center of rotation of the hip

Cited by 39 publications

References 3 publications

Early aseptic loosening of cementless monoblock acetabular components

Early aseptic loosening of cementless monoblock acetabular components

Planning préopératoire des prothèses de hanches cimentées à fort offset : est-il fiable et influence-t-il la survie ?

Can the Acetabular Position be Derived from a Pelvic Frame of Reference?

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