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Phys Ther Sport. 2018 Sep;33:7-11. doi: 10.1016/j.ptsp.2018.06.002. Epub 2018 Jun 6.

Knee crepitus is prevalent in women with patellofemoral pain, but is not related with function, physical activity and pain.

Author information

1
Laboratory of Biomechanics and Motor Control, School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Brazil; La Trobe Sports and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia. Electronic address: danilo110190@hotmail.com.
2
Laboratory of Biomechanics and Motor Control, School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Brazil; La Trobe Sports and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia.
3
Laboratory of Biomechanics and Motor Control, School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Brazil.
4
School of Exercise & Rehabilitation Sciences, College of Health and Human Services, Department of Athletic Training, University of Toledo, Toledo, OH, USA.

Abstract

OBJECTIVES:

(i) To assess the reliability of knee crepitus measures, (ii) to investigate the association between knee crepitus and PFP; (iii) to investigate the relationship between knee crepitus with self-reported function, physical activity and pain.

DESIGN:

Cross-sectional.

SETTING:

Laboratory-based study.

PARTICIPANTS:

165 women with PFP and 158 pain-free women.

MAIN OUTCOME MEASURES:

Knee crepitus test, anterior knee pain scale (AKPS) and self-reported worst knee pain in the last month, knee pain after 10 squats and knee pain after 10 stairs climbing.

RESULTS:

Knee crepitus clinical test presented high reliability Kappa value for PFP group was 0.860 and for pain-free group was 0.906. There is a significantly greater proportion of those with crepitus in the PFP group than in the pain-free group (OR = 4.19). Knee crepitus had no relationship with function (rpb = 0.03; p = 0.727), physical activity level (rpb = 0.010; p = 0.193), worst pain (rpb = 0.11; p = 0.141), pain climbing stairs (rpb = 0.10; p = 0.194) and pain squatting (rpb = 0.02; p = 0.802).

CONCLUSION:

Women who presents knee crepitus have 4 times greater odds to be in a group with PFP compared to those who do not. However, knee crepitus has no relationship with self-reported clinical outcomes of women with PFP.

KEYWORDS:

Anterior knee pain; Crepitus; Knee; Physical function

PMID:
29890402
DOI:
10.1016/j.ptsp.2018.06.002
[Indexed for MEDLINE]

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