Running Suture
Running Suture - Related Videos
04:51
Q Suture Technique: A Suturing Technique to Reduce Gap Formation and Increase Tensile Strength in Tendon Repair
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2025
In this video, we demonstrate suturing techniques — core suture and Q suture — to repair the foot flexor tendon in an ex vivo porcine model. Q sutures enhance the strength of the core suture in tendon repair and decrease gapping at the tendon repair site.
01:17
Wald-Wolfowitz Runs Test II
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2025
The Wald-Wolfowitz runs test, commonly referred to as the runs test, is a nonparametric test used to assess the randomness of ordered data. The test evaluates the number of runs, which are consecutive sequences of similar elements within the data. If the number of runs is significantly higher or lower than expected, the data is considered non-random, indicating a detectable pattern or structure. For binary data, runs are identified using symbols such as + and −, or equivalently, 1s and 0s. In...
01:17
Wald-Wolfowitz Runs Test I
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2025
The Wald-Wolfowitz test, also known as the runs test, is a nonparametric statistical test used to assess the randomness of a sequence of two different types of elements (e.g., positive/negative values, successes/failures). It examines whether the order of the elements in a sequence is random or if there is a pattern or trend present. This nonparametric test applies to any ordered data despite the population and sample data distribution, even if a higher sample size is available. The test works...
01:22
Sutures of the Skull
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2025
The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures. Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
04:48
Tracking Individual Running Metrics in Mice Using a Voluntary Wheel Running Protocol that Minimizes Social Isolation
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2025
This protocol describes an effective voluntary wheel-running model that can be implemented in various research contexts. Unlike other voluntary running models, this method avoids isolation housing while tracking running metrics in individual mice.
FAQs
Tension must be sufficient to approximate the wound edges without compressing them excessively. If pulled too tightly, the strand can impair tissue perfusion, which may interfere with healing and increase the risk of poor repair. Appropriate tension distributes mechanical support along the incision while maintaining alignment and avoiding unnecessary stress on the surrounding tissue.
Consistent spacing helps distribute support evenly along the incision rather than concentrating force at isolated points. Accurate alignment keeps the wound edges approximated and contributes to an even seal. Irregular bites or poorly aligned tissue can produce uneven mechanical support, increasing the likelihood of gaping or additional tissue trauma during repair.
The initial anchor prevents the continuous strand from pulling through the first tissue bite as closure begins. At the opposite end, the final security point prevents the completed line from loosening. Together, these endpoints maintain the support created by successive passes and help preserve wound-edge approximation after the closure is finished.
Needle passage should create controlled, accurately positioned tissue bites that bring the edges together without unnecessarily disrupting surrounding tissue. Accurate passage supports alignment and reduces avoidable trauma, whereas poorly positioned bites can contribute to gaping or uneven tension. The quality of each passage therefore affects both the mechanical stability and the biological conditions of repair.
Placement begins by anchoring the suture at the start of the wound. The needle then passes through successive tissue bites, with the edges aligned and spacing kept consistent as the strand advances along the incision. Tension is adjusted to provide support without excessive compression, and the strand is secured at the end to maintain the completed closure.
This technique is useful when a long, linear wound requires rapid closure and continuous support along its length. It is used in surgical procedures and experimental biology, where accurate needle passage, alignment, spacing, and knot security can produce an even seal. The resulting closure may reduce gaping and support effective tissue repair when tension is controlled.