[Possibilities of follow-up imaging after implantation of a carbon fiber-reinforced hip prosthesis].
BACKGROUND
There are many problems in the radiological diagnosis of aseptic loosening in total hip arthroplasty. Computed tomography (CT) and magnetic resonance tomography (MRT) are not usable for metallic implants (stainless steel, cobalt alloy, titanium alloy).


METHODS
From April 1993 to December 1993 15 CFRP non-cemented hip prostheses have been implanted. In a prospective clinical study plane radiographs, CT and MRT have been analysed.


RESULTS
Three stems were revised (1 femoral fracture, 1 severe thigh pain, 1 aseptic loosening). CFRP are not visible in plane radiographs. There was a complete (two-third of the cases) or nearly complete (one-third of the cases) small sclerotic interface between the prosthesis and the bone, these were apparent in CT and MRT in stable implant cases and did not have any clinical correlations.


CONCLUSIONS
The small sclerotic interface is quite different in comparison to so called "Reactive Lines". In one case of aseptic loosening there was an interposition of soft tissue between prosthesis and bone in MRT and CT. CFRP inaugurates new diagnostic possibilities in aseptic loosening of hip prosthesis and in tumour surgery too.
Krüger
T
T
Klinik und Poliklinik für Orthopädie, Martin-Luther-Universität Halle-Wittenberg.
Alter
C
C
Reichel
H
H
Birke
A
A
Hein
W
W
Spielmann
R P
RP
D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D001860:Bone Plates; D002244:Carbon; D000077482:Carbon Fiber; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010969:Plastics; D011475:Prosthesis Failure; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
D000077482:Carbon Fiber; D010969:Plastics; D002244:Carbon
Möglichkeiten der bildgebenden Darstellung eines Hüftendoprothesenschaftes aus Kohlenstoffaserverbundwerkstoff (CFK).