Low VIT K may result in knee pain, disability or immobility

older adults with low circulating vitamin K levels were nearly 1.5 times more likely to develop mobility limitation and nearly twice as likely to develop mobility disability compared to those with sufficient levels. This was true for both men and women.

M Kyla Shea, Stephen B Kritchevsky, Richard F Loeser, Sarah L Booth. Vitamin K Status and Mobility Limitation and Disability in Older Adults: The Health, Aging, and Body Composition Study. The Journals of Gerontology: Series A, 2019; DOI: 10.1093/gerona/glz108
https://academic.oup.com/biomedgerontology/advance-article-abstract/doi/10.1093/gerona/glz108/5485918?redirectedFrom=fulltext