JOURNAL ARTICLE

A biomechanical study of Achilles tendon repair augmentation using GraftJacket matrix

F Alan Barber, John E McGarry, Morley A Herbert, Robert Bentley Anderson
Foot & Ankle International 2008, 29 (3): 329-33
18348831

BACKGROUND: Ruptured Achilles tendons benefit from primary repair by decreasing re-rupture rates and allowing earlier range of motion. A stronger repair might allow for more aggressive rehabilitation decreasing postoperative stiffness, calf atrophy, and repair site gapping. The hypothesis of this study was that human dermal allograft augmentation of an Achilles repair would significantly increase repair strength and stiffness. This study evaluated strength and stiffness of an Achilles tendon repair augmented with a human dermal allograft (GraftJacket).

MATERIALS AND METHODS: Eight matched pairs of human cadaver legs were used. Simulated Achilles tendon ruptures were created 4 cm proximal to the calcaneal insertion. All tendons were repaired with a Krackow locking loop stitch. One of each matched pair was augmented with GraftJacket. Each construct was pre-loaded at 10 N and cyclically loaded (20 cycles) from 2 N to 30 N at a rate of 5 N/sec on an Instron machine. This was followed by testing to failure at a displacement rate of 6 mm/sec.

RESULTS: The ultimate failure load in the control group was 217 N +/- 31 compared to 455 N +/- 76.5 in the GraftJacket group (p < 0.001). The mean stiffness in the control group was 4.3 +/- 0.83 N/mm which was significantly less than the 12.99 +/- 5.34; N/mm in the GraftJacket group (p = 0.002).

CONCLUSION: The augmentation of an Achilles tendon repair with GraftJacket significantly increased repair strength and stiffness.

CLINICAL SIGNIFICANCE: These findings suggest that a GraftJacket augmented Achilles tendon repair could acutely withstand a more aggressive rehabilitation program, potentially decreasing ankle stiffness and allowing earlier return to full activities.

Full Text Links

Find Full Text Links for this Article

Discussion

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

Related Papers

Remove bar
Read by QxMD icon Read
18348831
×

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"