Load to failure testing of new meniscal repair devices

F Alan Barber, Morley A Herbert, David P Richards
Arthroscopy 2004, 20 (1): 45-50

PURPOSE: New all-inside meniscal repair devices include those combining sutures with anchors and that allow for an "adjustable" repair. This study's purpose was to compare the failure strength of new meniscal repair devices with suture repairs.

TYPE OF STUDY: Experimental laboratory biomechanical study.

METHODS: A single repair was placed in a vertical longitudinal peripheral tear made in fresh adult porcine menisci. Group 1 had a vertically oriented suture using the FasT-Fix (Smith & Nephew Endoscopy, Andover, MA) device. Group 2 had a horizontally oriented mattress suture using the FasT-Fix device. Group 3 had a repair using 2 Arthrex (Naples, FL) meniscal darts. The Group 4 repair used a RapidLoc (Mitek Surgical Products, Westwood, MA) device. The Group 5 repair used the Arthrotek meniscal screw (Biomet, Warsaw, IN). Group 6 had a single vertical suture, and group 7 a single horizontal suture, both of 2-0 Mersilene (Ethicon, Somerville, NJ). Load to failure testing was performed.

RESULTS: The vertical FasT-Fix suture had a mean load to failure of 70.9 N (1 SD +/- 33). The horizontal FasT-Fix suture had a mean load to failure of 72.1 N (+/- 23.5). The double Dart repair had a mean load to failure of 61.7 N (+/- 19). The RapidLoc repair had a mean load to failure of 43.28 N (+/- 3.98). The Arthrotek meniscal screw repair had a mean load to failure of 28.09 N (+/- 7.93). Failure occurred with device pullout of the inner rim (9 of 10) for the Darts, device pullout of the inner rim (6 of 10) and pullout of the outer rim (4 of 10) for the Arthrotek screw, and suture breakage for the FasT-Fix and the RapidLoc devices. The vertical sutures' mean load to failure was 80.43 N (+/- 8.5), and all 13 failed by suture breaking. The horizontal sutures' mean failure load was 55.9 N (+/- 18.8), and failure was by both suture breaking (6 of 10) and pulling through the meniscal tissue (4 of 10).

CONCLUSIONS: Some of the newer meniscal repair devices show improved loads to failure over earlier generations.

Full Text Links

Find Full Text Links for this Article


You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"