Universität zu Köln

Schnurr, C., Eysel, P., Fuerderer, S. and Koenig, D. P. (2011). Anatomy of Knee Arthritis - Consequences for the Planning of TKAs. Z. Orthop. Unfallchir., 149 (6). S. 653 - 659. NEW YORK: THIEME MEDICAL PUBL INC. ISSN 1864-6743

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Abstract

Background: Principles in total knee arthroplasty include a reconstructed mechanical axis and minimal bone loss. So far no study has analysed the anatomy of knee arthritis and its consequences for the implant planning. Therefore it has been the aim of our study to analyse typical deformities of arthritic knees and their consequences for the implant planning. Material and Methods: The data of 712 navigated total knee arthroplasties have been analysed. The deformities of the tibia and femur were measured. Algorithms have been developed to calculate the optimal tibial and femoral resection depths. Results: The deformity in varus arthritis must be corrected on the tibial side, in valgus arthritis on the femoral side. The optimal tibial resection depth in varus arthritis corresponds to the thinnest insert; in valgus arthritis 3 mm less is adequate. The femoral resection depth in varus arthritis corresponds to the implant thickness; in valgus arthritis a 1 mm deeper resection is mostly required. Conclusions: Varus and valgus deformities significantly differ in location of the deformity and required resection depth. A knowledge of these typical deformities enables an intraoperative control of the axis correction. A reduced tibial resection depth in valgus deformities saves bone stock for revision surgery and avoids larger insert sizes.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schnurr, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eysel, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fuerderer, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Koenig, D. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-484228
DOI:	10.1055/s-0031-1280308
Journal or Publication Title:	Z. Orthop. Unfallchir.
Volume:	149
Number:	6
Page Range:	S. 653 - 659
Date:	2011
Publisher:	THIEME MEDICAL PUBL INC
Place of Publication:	NEW YORK
ISSN:	1864-6743
Language:	German
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NAVIGATION; ALIGNMENT; VARUS Multiple languages Orthopedics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48422