Valgus Hip With High Antetorsion Causes Pain Through Posterior Extraarticular FAI


Autoria(s): Siebenrock, Klaus-Arno; Steppacher, Simon Damian; Haefeli, Pascal Cyrill; Tannast, Moritz; Schwab, Joseph Michael
Data(s)

01/12/2013

Resumo

BACKGROUND: Valgus hips with increased antetorsion present with lack of external rotation and posterior hip pain that is aggravated with hip extension and external rotation. This may be the result of posterior femoroacetabular impingement (FAI). QUESTIONS/PURPOSES: We asked whether (1) the range of motion (ROM); (2) the location of anterior and posterior bony collision zones; and (3) the prevalence of extraarticular impingement differ between valgus hips with increased antetorsion compared with normal hips and hips with idiopathic FAI. METHODS: Surface models based on CT scan reconstructions of 13 valgus hips with increased antetorsion, 22 hips with FAI, and 27 normal hips were included. Validated three-dimensional collision detection software was used to quantify the simulated hip ROM and the location of impingement on the acetabular and the femoral sides. RESULTS: Hips with coxa valga and antetorsion showed decreased extension, external rotation, and adduction, whereas internal rotation in 90° of flexion was increased. Impingement zones were more anteroinferior on the femur and posteroinferior on the acetabular (pelvic) side; and the zones were more frequently extraarticular, posterior, or to a lesser degree anterior against the inferior iliac spine. We found a higher prevalence of extraarticular impingement for valgus hips with increased antetorsion. CONCLUSIONS: Valgus hips with increased antetorsion predispose to posterior extraarticular FAI and to a lesser degree anteroinferior spine impingement. LEVEL OF EVIDENCE: Level II, prognostic study. See Guidelines for Authors for a complete description of levels of evidence.

Formato

application/pdf

Identificador

http://boris.unibe.ch/39673/1/art%253A10.1007%252Fs11999-013-2895-9.pdf

Siebenrock, Klaus-Arno; Steppacher, Simon Damian; Haefeli, Pascal Cyrill; Tannast, Moritz; Schwab, Joseph Michael (2013). Valgus Hip With High Antetorsion Causes Pain Through Posterior Extraarticular FAI. Clinical orthopaedics and related research, 471(12), pp. 3774-3780. Springer 10.1007/s11999-013-2895-9 <http://dx.doi.org/10.1007/s11999-013-2895-9>

doi:10.7892/boris.39673

info:doi:10.1007/s11999-013-2895-9

urn:issn:0009-921X

Idioma(s)

eng

Publicador

Springer

Relação

http://boris.unibe.ch/39673/

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Siebenrock, Klaus-Arno; Steppacher, Simon Damian; Haefeli, Pascal Cyrill; Tannast, Moritz; Schwab, Joseph Michael (2013). Valgus Hip With High Antetorsion Causes Pain Through Posterior Extraarticular FAI. Clinical orthopaedics and related research, 471(12), pp. 3774-3780. Springer 10.1007/s11999-013-2895-9 <http://dx.doi.org/10.1007/s11999-013-2895-9>

Palavras-Chave #610 Medicine & health
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed