Baris Kocaoglu1, Tekin Kerem Ulku2, Safiye Sayilir3, Mehmet Ugur Ozbaydar2, Alp Bayramoglu4, Mustafa Karahan2. 1. Department of Orthopedics and Traumatology, Acibadem University Faculty of Medicine, Tekin sok. No:8, 34718, Acibadem, Istanbul, Turkey. bariskocaoglu@gmail.com. 2. Department of Orthopedics and Traumatology, Acibadem University Faculty of Medicine, Tekin sok. No:8, 34718, Acibadem, Istanbul, Turkey. 3. Acibadem University Faculty of Medicine, Istanbul, Turkey. 4. Department of Anatomy, Acibadem University Faculty of Medicine, Istanbul, Turkey.
Abstract
PURPOSE: The aim of our study was to evaluate the risk of medial glenoid perforation and possible injury to suprascapular nerve during arthroscopic SLAP repair using lateral transmuscular portal. METHODS: Ten cadaveric shoulder girdles were isolated and drilled at superior glenoid rim from both anterior-superior portal (1 o'clock) and lateral transmuscular portal (12 o'clock) for SLAP repairs. Drill hole depth was determined by the manufacturer's drill stop (20 mm), and any subsequent drill perforations through the medial bony surface of the glenoid were directly confirmed by dissection. The bone tunnel depth and subsequent distance to the suprascapular nerve, scapular height and width, were compared for investigated locations. RESULTS: Four perforations out of ten (40 %) occurred through anterior-superior portal with one associated nerve injury. One perforation out of ten (10 %) occurred through lateral transmuscular portal without any nerve injury. The mean depth was calculated as 17.6 mm (SD 3) for anterior-superior portal and 26.5 mm (SD 3.6) for lateral transmuscular portal (P < 0.001). CONCLUSIONS: It is anatomically possible that suprascapular nerve could sustain iatrogenic injury during labral anchor placement during SLAP repair. However, lateral transmuscular portal at 12 o'clock drill entry location has lower risk of suprascapular nerve injury compared with anterior-superior portal at 1 o'clock drill entry location.
PURPOSE: The aim of our study was to evaluate the risk of medial glenoid perforation and possible injury to suprascapular nerve during arthroscopic SLAP repair using lateral transmuscular portal. METHODS: Ten cadaveric shoulder girdles were isolated and drilled at superior glenoid rim from both anterior-superior portal (1 o'clock) and lateral transmuscular portal (12 o'clock) for SLAP repairs. Drill hole depth was determined by the manufacturer's drill stop (20 mm), and any subsequent drill perforations through the medial bony surface of the glenoid were directly confirmed by dissection. The bone tunnel depth and subsequent distance to the suprascapular nerve, scapular height and width, were compared for investigated locations. RESULTS: Four perforations out of ten (40 %) occurred through anterior-superior portal with one associated nerve injury. One perforation out of ten (10 %) occurred through lateral transmuscular portal without any nerve injury. The mean depth was calculated as 17.6 mm (SD 3) for anterior-superior portal and 26.5 mm (SD 3.6) for lateral transmuscular portal (P < 0.001). CONCLUSIONS: It is anatomically possible that suprascapular nerve could sustain iatrogenic injury during labral anchor placement during SLAP repair. However, lateral transmuscular portal at 12 o'clock drill entry location has lower risk of suprascapular nerve injury compared with anterior-superior portal at 1 o'clock drill entry location.
Authors: Michael L Knudsen; Jason C Hibbard; David J Nuckley; Jonathan P Braman Journal: Knee Surg Sports Traumatol Arthrosc Date: 2013-02-12 Impact factor: 4.342
Authors: Laurie M Katz; Stephanie Hsu; Suzanne L Miller; John C Richmond; Eric Khetia; Eric Ketia; Navjot Kohli; Alan S Curtis Journal: Arthroscopy Date: 2009-08 Impact factor: 4.772