[Endoprosthetic tumor replacement : Reconstruction of the extensor mechanism and complications].
BACKGROUND
The reconstruction of the extensor mechanism around the knee is an essential part of tumorresection and tumor arthroplasty in orthopaedic oncology for functional rehabilitation of quality of life and daily activities.


OBJECTIVE
Operative procedures, treatment options and management of complications with reconstruction of the extensor mechanism after tumor resection around the knee depend on the type of arthroplasty.


METHODS
Description of the different treatment option for extensor deficiency divided into infra- and suprapatellar modalities.


RESULTS
The operative procedure is always an individual decision depending on the size of the tumor and its localisation. The extensor mechanism is reconstructed with autogenic, allogenic or synthetic material in combination with tumor arthroplasty.


CONCLUSIONS
Extensor reconstruction (supra-/infrapatellar) is an essential part of tumor resection and tumor arthroplasty around the knee. Often, low functional results and high levels of complications (arthrofibrosis, rerupture extensor mechanism, periprosthetic joint infection) are seen in these highly demanding cases in orthopaedic oncology.
Klinik für Orthopädie und Sportorthopädie, Klinikum rechts der Isar, TU München, Ismaninger Str. 22, 81675, München, Deutschland. f.wilken@tum.de.
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F
Wilken
Klinik für Orthopädie und Sportorthopädie, Klinikum rechts der Isar, TU München, Ismaninger Str. 22, 81675, München, Deutschland.
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Banke
Klinik für Orthopädie und Sportorthopädie, Klinikum rechts der Isar, TU München, Ismaninger Str. 22, 81675, München, Deutschland.
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M
Hauschild
Klinik für Orthopädie, König-Ludwig-Haus, Julius-Maximilians-Universität Würzburg, Brettreichstraße 11, 97074, Würzburg, Deutschland.
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Winkler
Klinik für Orthopädie, König-Ludwig-Haus, Julius-Maximilians-Universität Würzburg, Brettreichstraße 11, 97074, Würzburg, Deutschland.
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Schott
Klinik für Orthopädie, König-Ludwig-Haus, Julius-Maximilians-Universität Würzburg, Brettreichstraße 11, 97074, Würzburg, Deutschland.
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M
Rudert
Klinik für Orthopädie und Sportorthopädie, Klinikum rechts der Isar, TU München, Ismaninger Str. 22, 81675, München, Deutschland.
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RV
Eisenhart-Rothe
D001178:Arthroplasty / Q000379:methods*; D001859:Bone Neoplasms / Q000601:surgery*; D003131:Combined Modality Therapy / Q000379:methods; D019317:Evidence-Based Medicine; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods*; D017695:Soft Tissue Injuries / Q000175:diagnosis / Q000601:surgery*; D016896:Treatment Outcome
Allograft; Arthroplasty; Joint diseases; Knee joint; Patella