Universität zu Köln

Franz, Alois, Boese, Christoph Kolja, Matthies, Andrej, Leffler, Joerg and Ries, Christian (2019). Mid-Term Clinical Outcome and Reconstruction of Posterior Tibial Slope after UKA. J. Knee Surg., 32 (5). S. 468 - 475. STUTTGART: GEORG THIEME VERLAG KG. ISSN 1938-2480

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Abstract

Unicompartmental knee arthroplasty (UKA) has gained growing popularity over the last decades. The posterior tibial slope (PTS) has been shown to play a significant role for knee biomechanics and is thought to be crucial for clinical function of the UKA. We evaluated the clinical outcome at mid-term follow-up after UKA. Furthermore, the reconstruction of the individual PTS was analyzed. A total of 91 consecutive patients undergoing medial UKA for osteoarthritis were included. Patients were contacted by telephone for a survival analysis at a minimum of 30 months after surgery. Patient-oriented questionnaires and Knee Osteoarthritis Outcome Score (KOOS) were obtained. A retrospective chart review and radiological analysis of component alignment were performed for all patients before and at 6 weeks after surgery. Of 91 patients (93 knees) undergoing UKA, 69 patients (70 knees) were available for clinical follow-up after a mean of 56.0 (range 31-81) months post-surgery. The clinical results of the examined patients in the present study showed mean subscale scores of the KOOS andWestern Ontario and McMaster Universities Osteoarthritis Index between 71 and 91%. Overall 7 of 91 patients were revised during the course of follow-up period and underwent total knee arthroplasty. A Kaplan-Meier analysis showed a survival rate for UKA of 90.5% after 48 months. Calculated implant survival was 75.9 months (95% confidence interval 72.3-79.6) at the mean. The radiographic analysis of pre-and postoperative PTS showed no differences (p = 0.113). UKA for osteoarthritis of the medial knee compartment shows encouraging clinical results at mid-term follow-up. The individual PTS could be reconstructed within acceptable ranges. This is a retrospective therapeutic study with Level IV.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Franz, Alois UNSPECIFIED UNSPECIFIED UNSPECIFIED Boese, Christoph Kolja UNSPECIFIED UNSPECIFIED UNSPECIFIED Matthies, Andrej UNSPECIFIED UNSPECIFIED UNSPECIFIED Leffler, Joerg UNSPECIFIED UNSPECIFIED UNSPECIFIED Ries, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-149643
DOI:	10.1055/s-0038-1651528
Journal or Publication Title:	J. Knee Surg.
Volume:	32
Number:	5
Page Range:	S. 468 - 475
Date:	2019
Publisher:	GEORG THIEME VERLAG KG
Place of Publication:	STUTTGART
ISSN:	1938-2480
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language UNICOMPARTMENTAL KNEE ARTHROPLASTY; EARLY FAILURE; ALIGNMENT; REPLACEMENT; COMPONENT; REVISION; IMPLANT; RANGE; GAP Multiple languages Orthopedics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14964