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Ursachen und Management der Patellainstabilitäten nach künstlichem Gelenkersatz

Overview of attention for article published in Der Orthopäde, April 2016
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Title
Ursachen und Management der Patellainstabilitäten nach künstlichem Gelenkersatz
Published in
Der Orthopäde, April 2016
DOI 10.1007/s00132-016-3259-4
Pubmed ID
Authors

K.‑D. Heller

Abstract

Patellofemoral complications after total knee arthroplasty are responsible for a variety of surgical revisions. The causes of the various types of instability of the patella are listed in a differentiated way and the importance of clinical and imaging diagnostics as well as preventive strategies are elaborated. This article is based on a selective literature search in the PubMed database and on the long-standing experience of the author. Besides postoperative genu valgum with malalignment of the extensor mechanisms, other risk factors for patellar maltracking are insufficiency of the medial retinaculum, weakening of the vastus medialis muscle, contracture of the quadriceps femoris or tractus iliotibialis muscle, residual valgus deformity after total knee replacement, femoral or tibial malrotation as well as malpositioning of the patella, inappropriate design of the prosthesis and asymmetrical resection of the patella. The causes with respect to incorrect component positioning, faulty preparation of the patella, leg malalignment, inappropriate design of the prosthesis and soft tissue imbalance have to be recognized in order to address the problem in a targeted way. The preferred method of choice in the case of patellofemoral instability after total knee replacement is normally surgery; however, the cause for the instability has to be identified and consequently corrected before surgery. Without a clearly identified cause surgical measures are unrewarding and almost regularly lead to an unsatisfactory outcome. Patella maltracking after total knee arthroplasty is multifactorial and requires an accurate clarification. A surgical revision is only recommended in cases of clearly defined causes of pain or a clearly defined reason for patella malpositioning.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 11 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 11 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 2 18%
Student > Bachelor 1 9%
Other 1 9%
Student > Master 1 9%
Unknown 6 55%
Readers by discipline Count As %
Medicine and Dentistry 4 36%
Unknown 7 64%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 23 September 2017.
All research outputs
#11,537,730
of 12,981,289 outputs
Outputs from Der Orthopäde
#133
of 493 outputs
Outputs of similar age
#219,005
of 262,083 outputs
Outputs of similar age from Der Orthopäde
#8
of 10 outputs
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So far Altmetric has tracked 493 research outputs from this source. They receive a mean Attention Score of 1.0. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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