Analyse de la texture de l’os trabéculaire autour d’une cupule non cimentée RM Pressfit® : une série de 46 cas sur une période de 5 ans - 07/11/19
Texture analysis of trabecular bone around RM-Pressfit cementless acetabulum in a series of 46 patients during a 5 year period
Abstract |
Background |
Cementless total hip arthroplasty (THA) is a common procedure producing excellent clinical results. Their long-term survival is nevertheless burdened by loosening of the acetabular part caused by changes in the distribution of strains around the cup. In this context the RM-Pressfit® cup has been developed, resulting in a more harmonious distribution of the strains.
Hypothesis |
Texture analysis of X-ray films can evaluate the evolution of trabecular bone micro-architecture during the five years following THA with a RM-Pressfit® cup.
Material and method |
A monocentric series of 46 hips was reviewed regularly within five years post-surgery. Radiographic evaluation of the operated hip was done on frontal digitized radiographs of the pelvis to follow evolution of bone micro-architecture in the #2 zone of De Lee and Charnley. Texture analysis using fractal algorithms was done at D0, 6 months, 1, 2 and 5 years post-THA. The fractal methods used included the skyscrapers and the dynamic blanket methods with 3 different structuring elements (a cross, a horizontal and a vertical vector).
Results |
The RM-Pressfit® caused significant changes in the distribution of strains around the acetabulum that preserved the bone volume over a 5-year period post-surgery. This corresponds to an improvement of the trabecular micro-architecture around the acetabular cups.
Conclusion |
A statistically significant increase in the four fractal dimensions considered corresponded to an improved trabecular bone micro-architecture revealed by texture analysis, a non-invasive method that can be used on digitized X-ray images.
Level of evidence |
IIIb, Case control study, retrospective design.
Il testo completo di questo articolo è disponibile in PDF.Keywords : Total hip arthroplasty, RM-Pressfit® acetabulum, Bone micro-architecture, Texture analysis
| ☆ | Cet article peut être consulté in extenso dans la version anglaise de la revue Orthopaedics & Traumatology: Surgery & Research sur Science Direct (sciencedirect.com) en utilisant le DOI ci-dessus. |
Vol 105 - N° 7
P. 844 - Novembre 2019 Ritorno al numero
Articolo precedente
- Rôle de la voie d’abord dans la satisfaction du patient après arthroplastie totale de hanche
- Annick Den Daas, Evelien A. Reitsma, Bas A.S. Knobben, Bas L.E.F. ten Have, Matthijs P. Somford
- Survie à long terme de l’arthroplastie totale de hanche hybride à cupule CLS sans ciment et pivot cimenté en chrome-cobalt de Müller utilisant un couple Metasul™ en calibre 28 mm : analyse rétrospective de 115 hanches au recul minimal de 17,8 ans
- Roger Erivan, Guillaume Villatte, Thibaut Lecointe, Aurélien Mulliez, Stéphane Descamps, Stéphane Boisgard
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