| A comparison of cyclic variations in anterior knee laxity, genu recurvatum, and general joint laxity across the menstrual cycle. | |
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MedLine Citation:
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PMID: 20872575 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Changes in anterior knee laxity (AKL), genu recurvatum (GR) and general joint laxity (GJL) were quantified across days of the early follicular and early luteal phases of the menstrual cycle in 66 females, and the similarity in their pattern of cyclic variations examined. Laxity was measured on each of the first 6 days of menses (M1-M6) and the first 8 days following ovulation (L1-L8) over two cycles. The largest mean differences were observed between L5 and L8 for AKL (0.32 mm), and between L5 and M1 for GR (0.56°) and GJL (0.26) (p < 0.013). At the individual level, mean absolute cyclic changes in AKL (1.8 ± 0.7 mm, 1.6 ± 0.7 mm), GR (2.8 ± 1.0°, 2.4 ± 1.0°), and GJL (1.1 ± 1.1, 0.7 ± 1.0) were more apparent, with minimum, maximum and delta values being quite consistent from month to month (ICC(2,3) = 0.51-0.98). Although the average daily pattern of change in laxity was quite similar between variables (Spearman correlation range 0.61 and 0.90), correlations between laxity measures at the individual level were much lower (range -0.07 to 0.43). Substantial, similar, and reproducible cyclic changes in AKL, GR, and GJL were observed across the menstrual cycle, with the magnitude and pattern of cyclic changes varying considerably among females. |
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Authors:
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Sandra J Shultz; Beverly J Levine; Anh-Dung Nguyen; Hyunsoo Kim; Melissa M Montgomery; David H Perrin |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Journal of orthopaedic research : official publication of the Orthopaedic Research Society Volume: 28 ISSN: 1554-527X ISO Abbreviation: J. Orthop. Res. Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-09-27 Completed Date: 2010-10-15 Revised Date: 2011-11-01 |
Medline Journal Info:
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Nlm Unique ID: 8404726 Medline TA: J Orthop Res Country: United States |
Other Details:
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Languages: eng Pagination: 1411-7 Citation Subset: IM |
Copyright Information:
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© 2010 Orthopaedic Research Society. |
Affiliation:
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Department of Kinesiology, Applied Neuromechanics Research Laboratory, University of North Carolina at Greensboro, 1408 Walker Ave, Greensboro, North Carolina 27402, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Anterior Cruciate Ligament / physiology Female Humans Joint Instability / physiopathology* Knee Joint / physiology* Menstrual Cycle / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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R01 AR053172-03/AR/NIAMS NIH HHS; R01AR053172/AR/NIAMS NIH HHS; U54 HD28934/HD/NICHD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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