If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Terminology
Hi,
I am investigating the ways in which knots in suture material fail. (I am a surgeon.) I am familiar with breakage at the knot and failure by slippage of the knot when under load. But is there a term used to describe the situation in which a knot fails by "unravelling" or coming undone when it is unloaded, especially if shaken about ? Interestingly the surgical scientific surgical literature has fairly detailed data on failure by knot slippage and breakage under load but I have never seen any reference to "unravelling" of unloaded knots nor any standard way to measure the propensity for this to occur. I would be grateful for any advice or pointers on this. Doug Turner |
Ads |
#2
|
|||
|
|||
Hi Doug,
Be aware that unloaded shaking failure can be markedly affected by environment. Water can make slack knots fall apart faster than they might when moved in a mostly dry environment. Further, when you notice knots shaking loose in patients, does the knot actually fall apart or is it just unacceptably loose? I'm sure the tissue gives way over time with repeated flexures and could contribute to eventual looseness. I guess it'd depend on the force on the suture, the skin, and the suture diameter. On last thing, I know bio-compatible adhesives exist that are used for closing some wounds. Perhaps if no other practical solution can be found for the insecurity of certain suture material, a drop of adhesive might help. Cheers, roo "Doug" wrote in message ... Hi, I am investigating the ways in which knots in suture material fail. (I am a surgeon.) I am familiar with breakage at the knot and failure by slippage of the knot when under load. But is there a term used to describe the situation in which a knot fails by "unravelling" or coming undone when it is unloaded, especially if shaken about ? Interestingly the surgical scientific surgical literature has fairly detailed data on failure by knot slippage and breakage under load but I have never seen any reference to "unravelling" of unloaded knots nor any standard way to measure the propensity for this to occur. I would be grateful for any advice or pointers on this. Doug Turner |
#3
|
|||
|
|||
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Knot terminology | Jostmo | Knots | 2 | January 14th 04 05:32 AM |
Bead terminology | roxan | Beads | 0 | December 28th 03 04:31 AM |