Zusammenfassung
Einleitung: Femoralisparesen nach Totalendoprothesenimplantationen des Hüftgelenkes können die
unterschiedlichsten Ursachen haben. Verzögerte Läsionen des Nervus femoralis aufgrund
einer ausgeprägten Granulombildung bei Implantatlockerungen stellen eine ausgesprochene
Rarität dar.Falldarstellung: Wir berichten über den Fall einer verzögerten Parese des Nervus femoralis wegen aseptischer
Pfannenlockerung einer zementfreien Hüfttotalendoprothese. Die elektrophysiologische
Untersuchung zeigte eine fortgeschrittene Läsion des Nervus femoralis mit sensomotorischen
Defiziten. Ein Abdomen-Becken-CT stellte ein exzessives Granulom mit großer intrapelviner
Raumforderung dar. Nach Pfannenwechsel, Revision des Nervus femoralis und Resektion
des Granuloms besserten sich die neurologischen Defizite.Schlussfolgerung: Dieser Fall demonstriert die Notwendigkeit regelmäßiger klinisch-radiologischer Verlaufkontrollen
in 1-2-jährlichen Abständen nach totalendoprothetischem Ersatz des Hüftgelenkes, um
schwerwiegende Lockerungen, Granulombildung und damit verbunden beispielsweise Nervenläsionen
zu vermeiden.
Abstract
Aim: Femoral nerve palsy after total hip arthroplasty can result from several causes.
Delayed neuropathies of the femoral nerve because of excessive granuloma in loosened
implants are a rare condition.Case report: We report the case of delayed neuropathy of the femoral nerve after cementless total
hip arthroplasty because of aseptic loosening of the cup. Electrophysiologic evaluation
revealed a severe lesion of the femoral nerve with sensomotoric deficits. An abdominopelvic
computed tomography (CT) scan revealed an excessive granuloma with a large intrapelvic
portion. After revision of the loosened acetabular component and the femoral nerve
and removal of the granuloma the neurologic symptoms improved.Conclusion: Regular (1-2 years) clinical and radiological follow-ups are requested after total
hip arthroplasty to prevent excessive loosening of implants, excessive granuloma and
severe sequelae like nerve damage.
Schlüsselwörter
Hüftendoprothese - Lockerung - Parese - Femoralisnerv - Granulom
Key words
Total hip replacement - loosening - palsy - femoral nerve - granuloma
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Dr. med. Alexander Schuh
Orthopädische Klinik Rummelsberg
Rummelsberg 71
90592 Schwarzenbruck
Phone: 0 91 28/50-33 33
Fax: 0 91 28/50-31 50