Evidence map›Paper›PMID 31928962›Full record

ArticleJournal of plastic, reconstructive & aesthetic surgery : JPRAS2020

Revascularization patterns of nerve allografts in a rat sciatic nerve defect model.

Tiam M Saffari, Femke Mathot, Patricia F Friedrich, Allen T Bishop, Alexander Y Shin

Open access · greenAbstract read
In one paragraph

Article in Journal of plastic, reconstructive & aesthetic surgery : JPRAS, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.3field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 33 citations in OpenAlex.

  1. Advancing Peripheral Nerve Regeneration (Nerve SPACE 2025).Journal of hand surgery global online · 2026
    Article
  2. Review
  3. [Research progress on silk fibroin-nerve guidance conduits for peripheral nerve injury repair].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2025
    Review
  4. Article
  5. Management of "Long" Nerve Gaps.Journal of hand surgery global online · 2024
    Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 2 countries.

Tiam M SaffariDepartment of Orthopedic Surgery, Mayo Clinic, 200 1st St. SW, Rochester, MN 55905, USA; Department of Plastic-, Reconstructive- and Hand Surgery, Erasmus Medical Center, Doctor Molewaterplein 40, 3015 GD Rotterdam, the Netherlands.
Femke MathotDepartment of Orthopedic Surgery, Mayo Clinic, 200 1st St. SW, Rochester, MN 55905, USA; Department of Plastic-, Reconstructive- and Hand Surgery, Radboud University, Houtlaan 4, 6525 XZ Nijmegen, the Netherlands.
Patricia F FriedrichDepartment of Orthopedic Surgery, Mayo Clinic, 200 1st St. SW, Rochester, MN 55905, USA.
Allen T BishopDepartment of Orthopedic Surgery, Mayo Clinic, 200 1st St. SW, Rochester, MN 55905, USA.
Alexander Y ShinDepartment of Orthopedic Surgery, Mayo Clinic, 200 1st St. SW, Rochester, MN 55905, USA. Electronic address: shin.alexander@mayo.edu.
Mayo Clinic · US

Funding

Bridging the gap: Angiogenesis and stem cell seeding of processed nerve allograftR01NS102360 · NINDS · MAYO CLINIC ROCHESTER · PI SHIN, ALEXANDER Y. · 2018 to 2022
$1.7M
NINDS NIH HHS R01 NS102360
6 · The paper itself

Abstract

introductionThe specific patterns of revascularization of allograft nerves after the addition of vascularization remain unknown. The aim of this study was to determine the revascularization patterns of optimized processed allografts (OPA) after surgically induced angiogenesis to the wound bed in a rat sciatic nerve model. MATERIALS AND

methodsIn 51 Lewis rats, sciatic nerve gaps were repaired with (i) autografts, (ii) OPA and (iii) OPA wrapped in a pedicled superficial inferior epigastric artery fascia flap (SIEF) to provide vascularization to the wound bed. At 2, 12, and 16 weeks, the vascular volume and vascular surface area in nerve samples were measured using micro CT and photography. Cross-sectional images were obtained and the number of vessels was quantified in the proximal, mid, and distal sections of the nerve samples.

resultsAt 2 weeks, the vascular volume of SIEF nerves was comparable to control (P = 0.1). The vascular surface area in SIEF nerves was superior to other groups (P<0.05). At 12 weeks, vascularity in SIEF nerves was significantly higher than allografts (P<0.05) and superior compared to all other groups (P<0.0001) at 16 weeks. SIEF nerves had a significantly increased number of vessels compared to allografts alone in the proximal (P<0.05) and mid-section of the graft (P<0.05).

conclusionsAddition of surgical angiogenesis to the wound bed greatly improves revascularization. It was demonstrated that revascularization occurs primarily from proximal to distal (proximal inosculation) and not from both ends as previously believed and confirms the theory of centripetal revascularization.

Indexed as

AllograftsAnimalsDisease Models, AnimalGraft SurvivalMaleRatsRats, Inbred LewSciatic NerveSurgical FlapsAngiogenesisNerve regenerationPeripheral nerve repairProcessed nerve allograftRevascularization patternsVascularized nerve allograft

Identifiers

PMID31928962
PMCPMC7770618
OpenAlexW2994740791

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.