Impingement and stability of total hip arthroplasty versus femoral head resurfacing using a cadaveric robotics model.
J Orthop Res
; 31(7): 1108-15, 2013 Jul.
Article
en En
| MEDLINE
| ID: mdl-23494830
ABSTRACT
We identified and compared the impingent-free range of motion (ROM) and subluxation potential for native hip, femoral head resurfacing (FHR), and total hip arthroplasty (THA). These constructs were also compared both with and without soft tissue to elucidate the role of the soft tissue. Five fresh-frozen bilateral hip specimens were mounted to a six-degree of freedom robotic manipulator. Under load-control parameters, in vivo mechanics were recreated to evaluate impingement free ROM, and the subluxation potential in two "at risk" positions for native hip, FHR, and THA. Impingement-free ROM of the skeletonized THA was greater than FHR for the anterior subluxation position. For skeletonized posterior subluxations, stability for THA and FHR constructs were similar, while a different pattern was observed for specimens with soft tissues intact. FHR constructs were more stable than THA constructs for both anterior and posterior subluxations. When the femoral neck is intact the joint has an earlier impingement profile placing the hip at risk for subluxation. However, FHR design was shown to be more stable than THA only when soft tissues were intact.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Robótica
/
Artroplastia de Reemplazo de Cadera
/
Luxaciones Articulares
/
Cabeza Femoral
/
Articulación de la Cadera
/
Inestabilidad de la Articulación
Tipo de estudio:
Incidence_studies
/
Prognostic_studies
Límite:
Aged
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Orthop Res
Año:
2013
Tipo del documento:
Article
País de afiliación:
Estados Unidos