9 citations
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April 2017 in “International Journal of Dermatology” This study found significant differences in hair diameter between males and females across different zones of the safe donor area, which may aid in selecting optimal donor regions for hair transplantation surgeries.
May 2020 in “Hair transplant forum international” This study found that, among Indian men aged 50-55 with androgenetic alopecia, 78% of occipital donor areas fitted standard safe donor area criteria, but 22% did not, indicating a need for tailored selection in hair transplants.
10 citations
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July 2017 in “Archives of Plastic Surgery” This study found that hair diameter varies significantly within the occipital safe donor area, with thicker hair in the upper sections and thinner hair in the lower sections.
14 citations
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May 2014 in “Archives of plastic surgery” This study found that among Korean males with male pattern baldness, hair loss mostly progresses within 6 cm from the parietal whorl towards the occipital side.
April 2023 in “Journal of Cutaneous and Aesthetic Surgery” In this study, researchers analyzed the occipital donor area for hair transplantation among men aged 50–55 with androgenetic alopecia and found that while most subjects met standard safe donor area criteria, individual variations suggest a conservative approach to donor area selection.