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  13. Buttock-knee length

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Horizontal distance from the back of the uncompressed buttock to the front of the kneecap.

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Applications:

Clearance between seat back and obstacles in front of the knee.

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Corrections:

20mm for heavy outdoor clothing.

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Buttock-knee length (mm)

Men

Women

5th %ile

50th %ile

95th %ile

SD

5th %ile

50th %ile

95th %ile

SD

Hong Kong

505

550

595

26

470

520

570

30

British, Aged19-65 years

540

595

645

31

520

570

620

30

US, Aged19-65 years

550

600

650

31

525

575

625

31

Japanese adults

500

550

600

29

485

530

575

26

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13/35

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