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Related Experiment Video

Updated: Apr 27, 2026

The Modified Single-working Portal Technique Using Lasso-loop Stitch with Needle for Arthroscopic Subscapularis Repair
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The Modified Single-working Portal Technique Using Lasso-loop Stitch with Needle for Arthroscopic Subscapularis Repair

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Anatomic landmarks for arthroscopic suprascapular nerve decompression.

Michael L Knudsen1, Jason C Hibbard2, David J Nuckley2

  • 1Department of Orthopaedic Surgery, University of Minnesota, 2450 Riverside Ave S #R200, Minneapolis, MN, 55454, USA.

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|July 4, 2014
PubMed
Summary
This summary is machine-generated.

This study provides arthroscopic and external landmarks for safer suprascapular nerve (SSN) decompression surgery. These guidelines help surgeons and educators perform SSN entrapment procedures more efficiently and with reduced risk.

Keywords:
ArthroscopyCadaverDecompressionLandmarksSubacromialSuprascapular nerve

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Area of Science:

  • Orthopedic Surgery
  • Anatomy
  • Surgical Techniques

Background:

  • Arthroscopic suprascapular nerve (SSN) decompression is increasingly used for SSN entrapment.
  • Existing literature lacks clear arthroscopic anatomical guidelines for this procedure.

Purpose of the Study:

  • To establish arthroscopically visible and externally palpable anatomical landmarks for safer SSN decompression.
  • To analyze superior scapular anatomy relative to local landmarks to guide surgical dissection.

Main Methods:

  • A cadaveric study involving 12 cadavers (23 shoulders) was conducted.
  • Procedures included arthroscopic dissection of relevant anatomy followed by open dissection and landmark measurements.

Main Results:

  • Measurements of arthroscopic anatomy relative to landmarks were recorded in 23 shoulders.
  • The lateral insertion of the transverse suprascapular ligament to the acromioclavicular joint measured 3.6 cm.
  • Cadaveric height correlated significantly with the distance from the lateral acromion to the suprascapular notch (p=0.006).

Conclusions:

  • Meaningful, identifiable landmarks and measurements for arthroscopic SSN decompression were established.
  • Safe blunt dissection is recommended up to 2.5 cm medial to the acromioclavicular joint.
  • These findings facilitate safer surgical learning and teaching of SSN decompression techniques.