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An infant was delivered vaginally at 37+2 weeks gestation, weighing 2620 g. Her antenatal course was uncomplicated. She was noted at delivery to have hyperextended knees (figures 1 and 2), approximately to 50°. These could be flexed into a neutral position. The rest of her examination was unremarkable. She was not dysmorphic. Her hips were stable and there were no other bony or spinal abnormalities identified.
Footnotes
X @CatrionaMcK1012
Contributors CMK wrote the article. SK reviewed and made amendments.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer-reviewed.