Union Memorial Hospital Orthopaedics, Baltimore, MD 21211, USA.
Foot Ankle Int. 2010 Dec;31(12):1107-10. doi: 10.3113/FAI.2010.1107.
The Krackow stitch, commonly used for Achilles tendon repair, leaves the bulk of the stitch on the surface of the tendon as a possible nidus for adhesion. The proposed core weave stitch leaves a minimal amount of suture material on the tendon surface. The functional strength of the core weave stitch compared with the Krackow and the optimal number of throws, or stitches crossing the surface of the tendon, with this stitch are not known.
Twenty-one matched pairs of fresh-frozen cadaveric Achilles tendons were transected and randomly assigned to receive a 4-stranded stitch, either Krackow or core weave, with three, five, or seven throws. The samples were cyclically loaded to 75, 125 and 175 N for 1000 cycles at each load until failure, defined as 5 mm of elongation.
No significant difference in failure load was observed between the Krackow and core weave groups at any number of throws or within the groups based on number of throws. Failure load for the different number of throws in the Krackow group approached significance (p = 0.10), with higher failure load with three throws.
Functional strength of the core weave stitch and the Krackow stitch did not differ between groups with three, five, and seven throws. There was no significant difference in strength based on throws in either group.
The proposed core weave stitch provides functional strength similar to that of the Krackow stitch for tendon repair with reduced suture material on the tendon surface.
Krackow 缝合常用于跟腱修复，缝线的大部分留在腱表面，可能成为粘连的病灶。所提出的核心编织缝合留下的缝线材料在腱表面上最小化。核心编织缝合与 Krackow 相比的功能强度以及用这种缝合穿过腱表面的最佳投掷次数（或缝线数）尚不清楚。
21 对匹配的新鲜冷冻尸体跟腱被横断，并随机分配接受 4 股缝线，即 Krackow 或核心编织，有 3、5 或 7 次投掷。样品在每个负载下以 75、125 和 175 N 循环加载 1000 次，直到失效，定义为伸长 5 毫米。
在任何投掷次数或基于投掷次数的组内，Krackow 和核心编织组之间的失效负载均无显着差异。在 Krackow 组中，不同投掷次数的失效负载接近显着性（p = 0.10），三次投掷的失效负载更高。
对于 3、5 和 7 次投掷的组，核心编织缝合和 Krackow 缝合的功能强度没有差异。在任何一组中，强度都没有因投掷次数而有显着差异。
与 Krackow 缝合相比，所提出的核心编织缝合在腱表面上使用的缝线材料更少，提供了相似的功能强度。
