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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
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Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
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Related Experiment Video

Updated: Aug 8, 2025

Uniportal Full Endoscopic Posterolateral Transforaminal Lumbar Interbody Fusion
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Learning curve for endoscopic posterior cervical foraminotomy.

Dean C Perfetti1, Mary P Rogers-LaVanne1, Alexander M Satin1

  • 1Texas Back Institute, 6020 West Parker Road, Suite 200, Plano, TX, 75093, USA.

European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
|March 3, 2023
PubMed
Summary

Posterior endoscopic cervical foraminotomy (PECF) shows an initial learning curve of 8-28 cases. Patient outcomes improve regardless of surgeon experience, indicating PECF is a safe and effective surgical option.

Keywords:
Learning curvePosterior endoscopic cervical foraminotomySpinal endoscopySpine surgery

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Area of Science:

  • Neurosurgery
  • Spine Surgery
  • Minimally Invasive Spine Surgery

Background:

  • Anterior cervical discectomy and fusion (ACDF) and cervical disk arthroplasty are standard surgical treatments for cervical radiculopathy.
  • Posterior endoscopic cervical foraminotomy (PECF) is an emerging alternative gaining traction.
  • Limited data exists on the surgical proficiency required for PECF.

Purpose of the Study:

  • To evaluate the learning curve for posterior endoscopic cervical foraminotomy (PECF).
  • To determine the number of cases required to achieve proficiency in PECF.

Main Methods:

  • Retrospective analysis of operative times for 90 uniportal PECF procedures performed by two fellowship-trained spine surgeons.
  • Learning curve assessed using nonparametric monotone regression, with plateau in operative time defining proficiency.
  • Secondary outcomes included fluoroscopy use, visual analog scale (VAS) for neck/arm pain, Neck Disability Index (NDI), and reoperation rates.

Main Results:

  • Surgeons showed no significant difference in operative time (p=0.420).
  • Learning curve plateaus occurred between 9-29 cases (initial) and potentially a second plateau around 49 cases for one surgeon.
  • Patient-reported outcomes (VAS, NDI) improved post-surgery and were independent of learning curve progression; fluoroscopy use remained stable.

Conclusions:

  • PECF demonstrates an initial learning curve of 8-28 cases, with potential for a second curve.
  • Patient outcomes improve following PECF and are not dependent on the surgeon's experience level.
  • PECF is a safe and effective technique for spine surgeons to consider for cervical radiculopathy treatment.