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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

01-08-2012 | Knee

Patella baja after unicompartmental knee arthroplasty

Authors: Konstantinos Anagnostakos, Olaf Lorbach, Dieter Kohn

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 8/2012

Abstract

Purpose

The literature data on patellar height following unicompartmental knee arthroplasty (UKA) are scarce.

Methods

A total of 41 knee joints in 37 patients after UKA were prospectively evaluated for patellar height by using the Insall–Salvati and modified Insall–Salvati ratio. Patellar height was measured preoperatively, postoperatively, at 6, 12 weeks, and, at 1 year postoperatively. Patients were categorized according to age, gender, operated side, and rehabilitation program.

Results

Regarding all the patients, the Insall–Salvati ratio demonstrated a significant decrease only for the time period “postoperatively–1 year postoperatively”, whereas the modified Insall–Salvati ratio showed a significant decrease only for the period “preoperatively–postoperatively”. The Insall–Salvati ratio showed a significant decrease in the patellar height of men and left knees, whereas the modified Insall–Salvati ratio revealed a significant decrease in patients older than 65 years and those who followed a specific rehabilitation program.

Conclusions

The decrease in the patellar height after UKA occurs within the first postoperative year. Women, right knees, patients younger than 65 years and those who do not follow a specific rehabilitation program are less prone to decrease in the patellar height; ratio-specific differences are evident for each subgroup.

Level of evidence

Diagnostic study, Level III.

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Title: Patella baja after unicompartmental knee arthroplasty
Authors: Konstantinos Anagnostakos
Olaf Lorbach
Dieter Kohn
Publication date: 01-08-2012
Publisher: Springer-Verlag
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 8/2012
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-011-1689-4

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Patella baja after unicompartmental knee arthroplasty

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

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