Iron hand (prosthesis)
Iron hands are metal prostheses for hands and upper extremities from the middle ages and early modern period. These designs combined cosmetic and functional properties. The most famous example of an iron hand was made around the year 1530, being the second prosthetic hand made for the German knight Götz von Berlichingen.[1]
Most iron hands are based on the same constructive principles, although there are considerable differences in complexity. Fingers can be flexed passively (for example using the healthy hand) and are locked in place by a ratchet mechanism, similar to those of contemporary flintlocks. Extension of the fingers works by spring pressure.
Bibliography
- Löffler, Liebhard: Der Ersatz für die obere Extremität: die Entwicklung von den ersten Zeugnissen bis heute. Stuttgart: Enke 1984, ISBN 3-432-94591-4.
- Putti, Vittorio: Historical Prostheses. In: Journal of Hand Surgery. Vol. 30, No. 3, Edinburgh: 2005, pp. 310–325.
gollark: Probably, though?
gollark: That would kind of defeat the point.
gollark: I'm not sure how else you could do it, really, since the situation with cryptocurrencies is that you need some way to deterministically, mathematically, decentrally verify that the money actually does belong to a specific person.
gollark: This avoids the problems of proof of stake/work, but does mean you get some authority controlling it, which is... well, the situation now?
gollark: We have... several thousand of them.
References
- Quasigroch, Günter: Die Handprothesen des fränkischen Reichsritters Götz von Berlichingen. 2. Fortsetzung: Die Zweithand. In: Waffen- und Kostümkunde. Vol. 25, 1983, pp. 103–120.
Wikimedia Commons has media related to Iron Hand (prosthesis). |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.