Sural Nerve Sparing
Sural Nerve Sparing - Related Videos
07:44
The Spared Nerve Injury (SNI) Model of Induced Mechanical Allodynia in Mice
0 Views •
Cited by 97 •
2011
The Spared Nerve Injury animal model is described here as a mouse model of peripheral neuropathic pain following partial denervation of the sciatic nerve by lesioning the tibial and common peroneal nerve branches, leaving the remaining sural nerve intact. Behavioral modification resulting from mechanical allodynia is quantified by von Frey filaments.
07:42
Nerve-sparing Mid-urethral Obstruction (NeMO) in Female Small Rodents
0 Views •
Cited by 7 •
2017
Traditional modeling of partial bladder outlet obstruction in rodents is fraught with animal mortality. A denervation injury from dissection around the proximal urethra and bladder neck is also of major concern. We developed and evaluated a safe and reliable mid-urethral obstruction model, avoiding the shortcomings of the traditional model.
01:30
Spare Receptors
0 Views •
2023
Some receptors remain unoccupied even when an agonist produces a maximal response. Such empty ones are called spare receptors. In presence of spare receptors the maximum effect of an agonist drug is achieved with fewer than 100% of the receptors being occupied. To determine the presence of spare receptors, scientists often compare the concentration of the drug needed to produce 50% of the maximum effect (EC50) with the concentration of the drug needed to occupy 50% of the receptors (Kd). If the...
04:34
Modified Spared Nerve Injury Surgery Model of Neuropathic Pain in Mice
0 Views •
Cited by 5 •
2022
The modified surgery is a simplified method for mouse or rat spared nerve injury model that requires only one ligation and one cut to injure both common peroneal and sural nerves.
08:09
Vessel-sparing Excision and Primary Anastomosis
0 Views •
Cited by 6 •
2019
Here, we present an elaborate and efficient protocol to treat isolated short bulbar or posterior urethral strictures with vessel-sparing excision and primary anastomosis.
FAQs
The main hazards are mechanical and thermal: excessive traction can stretch the nerve, compression can impair it during exposure, heat can injure tissue, and accidental transection interrupts continuity. These mechanisms matter because sural nerve injury may produce postoperative sensory loss, pain, or neuroma formation. A sparing strategy therefore addresses several sources of damage rather than focusing only on avoiding a cut.
Locating the nerve’s course before deeper manipulation helps the surgeon understand whether the planned exposure approaches the posterolateral ankle and adjacent lower-leg or foot regions. That relationship guides dissection and instrument placement, allowing work around the nerve instead of through it. The anatomical assessment is especially important when the operative field lies close to the nerve’s expected pathway.
Preserving nerve continuity differs from merely completing the planned orthopedic, trauma, vascular, or reconstructive exposure. The operation may reach its target, yet nerve-related harm can still result from traction, compression, heat, or tissue trauma. Treating nerve protection as a separate operative objective helps balance access to the surgical site with reduction of avoidable sensory complications.
Minimizing tissue trauma supports a more predictable postoperative course because the nerve can be affected without complete transection. Even when continuity remains, excessive manipulation or adverse local conditions may contribute to symptoms after surgery. This principle broadens assessment beyond visible cutting: surgeons must consider how the entire exposure may influence later sensory function, pain, and the possibility of neuroma formation.
A practical sparing sequence begins by identifying the sural nerve’s course, then carefully dissecting around it during exposure or repair. The surgeon limits traction and compression while also limiting heat exposure and avoiding accidental transection. These steps preserve continuity and reduce tissue trauma at the operative site, providing a focused method for protecting the nerve throughout the procedure.
The approach is relevant whenever surgery involves the lower leg, ankle, or foot and the operative field approaches the posterolateral ankle. It can therefore inform orthopedic and trauma procedures as well as vascular and reconstructive operations. Its usefulness depends on the relationship between the incision or instruments and the nerve, not simply on the specialty performing the surgery.
Postoperative sensory loss, pain, and neuroma formation are key complications that nerve-sparing aims to reduce. Preserving continuity and limiting local trauma can support safer, more predictable recovery, so these outcomes provide the main clinical rationale for the approach. The concern is especially relevant when exposure or instruments approach the posterolateral ankle, where protecting the nerve becomes part of operative planning.