Computergestützte Bewegungssimulation an Hüftendoprothesen mit Keramik-Keramik-Gleitpaarung. Analyse der Einflussparameter Implantat-Design und Position

Bader, Rainer; Steinhauser, E.; Gradinger, R.; Willmann, Gero; Mittelmeier, Wolfram

doi:10.1055/s-2002-32476

Cited by 40 publications

(25 citation statements)

References 6 publications

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“…Head diameter and neck geometry are important for postoperative mobility and the risk of dislocation after THR (McCollum and Gray 1990, Scifert et al 1998, Bartz et al 2000, Bader et al 2002, Burroughs et al 2002, Byström et al 2003. In several studies, the ROM until impingement was calculated from known implant geometries and orientations (Lavernia et al 1998, Kummer et al 1999, Bader et.…”

Section: Discussionmentioning

confidence: 99%

“…In several studies, the ROM until impingement was calculated from known implant geometries and orientations (Lavernia et al 1998, Kummer et al 1999, Bader et. al.…”

Section: Discussionmentioning

confidence: 99%

“…To avoid early impingement, it seems that the ratio between femoral head and neck diameter should be greater than 2:1 (Bader et al 2002). If small head diameters are necessary for technical reasons in surgery, such as a small acetabulum, these should be combined with a stem having a reduced taper and neck diameter.…”

Section: Range Of Motion Until Impingment (°)mentioning

confidence: 99%

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The influence of head and neck geometry on stability of total hip replacementA mechanical test study

Bader

Scholz

Steinhauser

et al. 2004

Acta Orthopaedica Scandinavica

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Background Dislocation after replacement may be caused by poor implant design or positioning, or by the surgical approach taken. We evaluated the infl uence of head and neck design on range of motion and stability (with respect to risk of dislocation) in total hip endoprostheses.Material and methods Using a test device, we determined the stability afforded by different head sizes and neck geometries for various implant positions.Results Increasing head diameter led to an enhancement of range of motion as well as resistance against subluxation, and thus to improved stability in any movement combination and implant orientation. Smaller femoral heads were associated with increased risk of dislocation, especially in a poor implant position such as retroversion, and steep positioning of the cup. Skirted metal or mushroom-shaped ceramic heads had a reduced range of motion until impingement of approx. 20°, as compared to spherical standard heads. Furthermore, after identical joint loading, skirted heads dislocated more readily than standard heads with corresponding diameters.Interpretation To obtain suffi cient joint mobility and stability, neck geometry and implant position should be considered when choosing the femoral head size.

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Section: Discussionmentioning

confidence: 99%

“…In several studies, the ROM until impingement was calculated from known implant geometries and orientations (Lavernia et al 1998, Kummer et al 1999, Bader et. al.…”

Section: Discussionmentioning

confidence: 99%

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The influence of head and neck geometry on stability of total hip replacementA mechanical test study

Bader

Scholz

Steinhauser

et al. 2004

Acta Orthopaedica Scandinavica

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“…Anzahl Prozent Bader et al [12,25] Selbst bei einer tolerierten Abweichung von € 108 lagen immer noch 34,5 %, also mehr als 1 / 3 der Hüftpfannen, außerhalb dieses "Sicherheitsbereiches".…”

Section: Abweichungunclassified

Radiologische Evaluation der Variationsbreite der Pfannenpositionierung bei konventioneller Hüftendoprothesenversorgung

Leichtle

Gosselke²,

Cj³

et al. 2007

Fortschr Röntgenstr

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“…Während der direkte Einfluss der Pfanneninklination auf den Verschleiß kontrovers diskutiert wird [8,9], führt ein funktionelles Impingement der beiden Implantatanteile zur einer höheren Abnutzung [10]. Erwartungsgemäß besteht eine enge Beziehung zwischen dem funktionellen Implanatimpingement und der Position der Implanate [11]. Insofern ist die verlässliche Genauigkeit eine der wichtigsten Voraussetzungen eines funktionierenden Navigationssystems.…”

Section: Schlüsselwörterunclassified

Fehleinschätzung der Anteversion bei der bildfreien, computerassistierten Hüftpfannen-Navigation als Folge einer vereinfachten Palpationsprozedur der frontalen Beckenebene

Richolt

Rittmeister²

2006

Z Orthop Ihre Grenzgeb

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Computergestützte Bewegungssimulation an Hüftendoprothesen mit Keramik-Keramik-Gleitpaarung. Analyse der Einflussparameter Implantat-Design und Position

Abstract: Considering certain criteria for ceramic hip implants regarding implant positioning, design and handling, ceramic-on-ceramic couples can be used with low risk of revision surgery and they can also reduce the prosthesis loosening associated with wear in young and active patients.

Cited by 40 publications

References 6 publications

The influence of head and neck geometry on stability of total hip replacementA mechanical test study

The influence of head and neck geometry on stability of total hip replacementA mechanical test study

Radiologische Evaluation der Variationsbreite der Pfannenpositionierung bei konventioneller Hüftendoprothesenversorgung

Fehleinschätzung der Anteversion bei der bildfreien, computerassistierten Hüftpfannen-Navigation als Folge einer vereinfachten Palpationsprozedur der frontalen Beckenebene

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