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Narberth, PA 19072-2307
United States

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Mr. Keith Karn, PhD


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1 to 5 of 38 total
Posted By Keith Karn 08-06-2026 10:49
Found In Egroup: Product Design
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Hi all. I have a client team who will seek FDA clearance via 510(k) on a medical device as both a prescription (Rx) device and as an over-the-counter (OTC) device. Can anyone provide insight on whether seeking Rx clearance first or OTC clearance first is preferred? ------------------------------ ...
Posted By Keith Karn 07-20-2026 13:55
Found In Egroup: Product Design
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Greetings members of the Product Design and Surface Transportation Technical Groups. My apologies for those of you like me, who are a member of both TGs and for HFES's inability not to send you two copies of this. ;-) I'm seeking your guidance in finding references. As digital electronics become increasingly ...
Posted By Keith Karn 07-20-2026 13:55
Found In Egroup: Surface Transportation Technical Group
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Greetings members of the Product Design and Surface Transportation Technical Groups. My apologies for those of you like me, who are a member of both TGs and for HFES's inability not to send you two copies of this. ;-) I'm seeking your guidance in finding references. As digital electronics become increasingly ...
Posted By Keith Karn 07-17-2026 08:17
Found In Egroup: Human Factors/Ergonomics Professional Community
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Ads, I think you missed a key point. When the feet are not properly supported the popliteal area behind the knee bears the weight of the leg against the front of the seat pan. I am not a physician, physiologist, or anatomist, but my guess is that this posture could impact underlying structures including ...
Posted By Keith Karn 02-06-2026 11:37
Found In Egroup: Forensics Professional Technical Group
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Hi Ian, While I've been working in the field of human factors / ergonomics since 1980, I'm a relative newcomer to the applications to forensics work. I've got about 20 cases under my belt now (mostly analysis and report writing). I've only been deposed once and I'm scheduled for my first court appearance ...