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Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position

PURPOSE: To explore whether patient position influences a surgeon’s ability to accurately judge anchor position on the glenoid. MATERIALS AND METHODS: Two anchors were inserted into the glenoid of 8 shoulders. Arthroscopic videos were taken from 3 views (posterior beach chair [pBC], posterior latera...

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Autores principales: Jong, Benjamin Y., MacDonald, Peter B., Regan, William D., Leiter, Jeff R., Sayre, Eric C., Sasyniuk, Treny M., Goel, Danny P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7846687/
https://www.ncbi.nlm.nih.gov/pubmed/33554167
http://dx.doi.org/10.1016/j.jseint.2020.09.012
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author Jong, Benjamin Y.
MacDonald, Peter B.
Regan, William D.
Leiter, Jeff R.
Sayre, Eric C.
Sasyniuk, Treny M.
Goel, Danny P.
author_facet Jong, Benjamin Y.
MacDonald, Peter B.
Regan, William D.
Leiter, Jeff R.
Sayre, Eric C.
Sasyniuk, Treny M.
Goel, Danny P.
author_sort Jong, Benjamin Y.
collection PubMed
description PURPOSE: To explore whether patient position influences a surgeon’s ability to accurately judge anchor position on the glenoid. MATERIALS AND METHODS: Two anchors were inserted into the glenoid of 8 shoulders. Arthroscopic videos were taken from 3 views (posterior beach chair [pBC], posterior lateral decubitus [pLD], and anterosuperolateral decubitus [asLD]). The shoulders were disarticulated to identify “true” anchor position. Seventeen shoulder surgeons reviewed the videos and indicated anchor positions using the “clock face” method. Accuracy was measured within tolerances, ranging from zero (exact), 0.5 (half-hour), 1.0, and 1.5 hours of “true” position. Intra- and inter-rater agreement was calculated. Post hoc analyses explored for bias dependent on surgical side. RESULTS: The overall accuracy was 34.0%. At tolerances of 0.5, 1.0, and 1.5 hours, accuracy increased to 82.4%, 95.4%, and 98.0%. With a 30° scope, identification of exact position was more accurate in pBC than pLD (odds ratio [OR] = 1.397; P = .029) but not asLD (OR =1.341; P = .197). At a tolerance of 0.5 hour, the 30° scope was more accurate in pBC than both pLD (OR = 1.444; P = .011) and asLD (OR = 1.728; P = .009). In left shoulders, anchors were perceived as more inferior than true position in asLD and pLD. In right shoulders, anchors were perceived as more superior than true position from pBC and pLD. Inter- and intrarater agreement were highest in pBC with a 30° scope (30° scope weighted kappa = 0.783 and 70° scope weighted kappa = 0.853, respectively). CONCLUSION: Judgment of anchor position on video is most accurate in a pBC view. Inter- and intrarater reliability were also highest from a pBC view.
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spelling pubmed-78466872021-02-04 Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position Jong, Benjamin Y. MacDonald, Peter B. Regan, William D. Leiter, Jeff R. Sayre, Eric C. Sasyniuk, Treny M. Goel, Danny P. JSES Int Shoulder PURPOSE: To explore whether patient position influences a surgeon’s ability to accurately judge anchor position on the glenoid. MATERIALS AND METHODS: Two anchors were inserted into the glenoid of 8 shoulders. Arthroscopic videos were taken from 3 views (posterior beach chair [pBC], posterior lateral decubitus [pLD], and anterosuperolateral decubitus [asLD]). The shoulders were disarticulated to identify “true” anchor position. Seventeen shoulder surgeons reviewed the videos and indicated anchor positions using the “clock face” method. Accuracy was measured within tolerances, ranging from zero (exact), 0.5 (half-hour), 1.0, and 1.5 hours of “true” position. Intra- and inter-rater agreement was calculated. Post hoc analyses explored for bias dependent on surgical side. RESULTS: The overall accuracy was 34.0%. At tolerances of 0.5, 1.0, and 1.5 hours, accuracy increased to 82.4%, 95.4%, and 98.0%. With a 30° scope, identification of exact position was more accurate in pBC than pLD (odds ratio [OR] = 1.397; P = .029) but not asLD (OR =1.341; P = .197). At a tolerance of 0.5 hour, the 30° scope was more accurate in pBC than both pLD (OR = 1.444; P = .011) and asLD (OR = 1.728; P = .009). In left shoulders, anchors were perceived as more inferior than true position in asLD and pLD. In right shoulders, anchors were perceived as more superior than true position from pBC and pLD. Inter- and intrarater agreement were highest in pBC with a 30° scope (30° scope weighted kappa = 0.783 and 70° scope weighted kappa = 0.853, respectively). CONCLUSION: Judgment of anchor position on video is most accurate in a pBC view. Inter- and intrarater reliability were also highest from a pBC view. Elsevier 2020-11-24 /pmc/articles/PMC7846687/ /pubmed/33554167 http://dx.doi.org/10.1016/j.jseint.2020.09.012 Text en © 2020 The Author(s) http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Shoulder
Jong, Benjamin Y.
MacDonald, Peter B.
Regan, William D.
Leiter, Jeff R.
Sayre, Eric C.
Sasyniuk, Treny M.
Goel, Danny P.
Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position
title Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position
title_full Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position
title_fullStr Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position
title_full_unstemmed Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position
title_short Perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position
title_sort perceived vs. true glenoid anchor placement: a cadaveric comparison of the beach chair and lateral position
topic Shoulder
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7846687/
https://www.ncbi.nlm.nih.gov/pubmed/33554167
http://dx.doi.org/10.1016/j.jseint.2020.09.012
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