Advanced Knee Replacement
From Combine OverWiki, the Half-Life Wiki
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| Advanced Knee Replacement | |
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| General information | |
| Affiliation | |
| Type |
Prosthesis |
| Usage | |
| Used by | |
| Game information | |
| Entity |
N/A |
The Advanced Knee Replacement, also known as heel springs, is a technique used by Aperture Science to prevent their Test Subjects from suffering from huge drops by lessening the impact. It consists of two prosthesis completely or partially replacing the knee, partially tied to the Test Subject's calves, and prolonged with two flexible bars going under the Test Subject's heels, acting as springs. As the only seen Test Subject, Chell uses these prosthesis.
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[edit] Behind the scenes
- The heel springs were originally created for the Combine Assassin, cut from Half-Life 2.[1]
- The Advanced Knee Replacement was added into Portal due to disbelief by playtesters that Chell could survive the drops she was subject to, particularly those that involved falling recursively through portals.[2]
[edit] Trivia
- While heel springs do not appear in the original Half-Life, they will appear on the Black Ops female assassins in the Black Mesa mod.[3]
- The real-life corollary activity to this is called "powerbocking". A very similarly shaped device is also used as prosthetic legs for amputees (this is what Eli Vance uses).
[edit] Gallery
 Chell and her Advanced Knee Replacements from the back. |
 Front view. |
 Texture of a clipboard about the Advanced Knee Replacement specs. |
 Detail of the Combine Assassin's heel springs. |
[edit] List of appearances
- Portal (First appearance)
[edit] Notes and references
- ↑ Playable Half-Life 2 Beta
- ↑ Portal commentary
- ↑ File:BMS Femassassin beauty.jpg
