Assessment of a press-fit proximal femoral modular reconstruction implant (PFMR®) at 14.5 years. A 48-case series with a disturbing rate of implant fracture - 24/04/18
, S. Sabau, T. Goetzmann, A. Jacquot, F. Sirveaux, D. Mole, O. Roche
Bienvenido a EM-consulte, la referencia de los profesionales de la salud.
Artículo gratuito.
Conéctese para beneficiarse!
Abstract |
Introduction |
The PFMR® proximal femoral modular reconstruction implant (Protek, Sulzer Orthopedics, Switzerland) is a straight modular stem in sanded titanium with press-fit anchorage, intended to achieve spontaneous bone reconstruction following Wagner's principle. The aim of the present study was to analyze long-term clinical and radiological outcome.
Material and method |
A single-center retrospective study included 48 PFMR stems implanted in 47 patients between 1998 and 2002. Results in this series were previously reported at 7 years’ follow-up.
Clinical assessment used PMA and Harris scores. Radiologic assessment focused on stem stability and osseointegration, and bone stock following Le Béguec.
Results |
Twenty-three patients were seen at a mean 14.5 years’ follow-up (13 deceased, 11 lost to follow-up), including 1 with bilateral implants, i.e., 24 stems. PMA and Harris scores, stem stability and osseointegration and bone stock were stable with respect to the 7-year findings. Radiology found 7 stem fractures in the Morse taper, i.e., in 29% of implants. Two of these cases required femoral implant replacement; 5 were asymptomatic.
Discussion and conclusion |
Long-term outcome for PFMR stems was clinically and radiologically satisfactory for the 16 patients free of mechanical complications. The Morse taper fracture rate was high, and higher than reported elsewhere. The usual risk factors for implant fracture were not found in the present series. The modular design of the press-fit revision implant is its weak point; monoblock implants should be used in patients with good life-expectancy.
Level of evidence |
IV (retrospective study).
El texto completo de este artículo está disponible en PDF.Keywords : Revision, Modular, Femoral stem, Fracture, Survival, PFMR
Esquema
Vol 104 - N° 3
P. 317-323 - mai 2018 Regresar al número
Artículo precedente
- Do screws and screw holes affect osteolysis in cementless cups using highly crosslinked polyethylene? A 7 to 10-year follow-up case–control study
- N. Taniguchi, T. Jinno, R. Takada, D. Koga, T. Ando, A. Okawa, H. Haro
- Course of dislocated posterior hip arthroplasty: A continuous 232-patient series at a mean 10 years’ follow up (range, 1–22 years)
- P. Martinot, A. Blairon, S. Putman, G. Pasquier, J. Girard, H. Migaud
Bienvenido a EM-consulte, la referencia de los profesionales de la salud.