The Histological Analysis of the Glenohumeral "Critical Zone"

The arterial integrity of the "critical zone" of the rotator cuff has led to much uncertainty regarding rotator cuff tendinopathy. As the region of the supraspinatus tendon is the most common area affected by impingement, its central aspect is situated approximately 10 mm from the insertio...

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Autores principales:	Naidoo,N, Lazarus,L, Satyapal,K. S
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2016
Materias:	"Critical zone" Arterioles Vascularity Morphometric parameters
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300038
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spelling	oai:scielo:S0717-950220160003000382016-11-17The Histological Analysis of the Glenohumeral "Critical Zone"Naidoo,NLazarus,LSatyapal,K. S "Critical zone" Arterioles Vascularity Morphometric parameters The arterial integrity of the "critical zone" of the rotator cuff has led to much uncertainty regarding rotator cuff tendinopathy. As the region of the supraspinatus tendon is the most common area affected by impingement, its central aspect is situated approximately 10 mm from the insertion at the greater humeral tubercle. Although many studies have investigated the vascularity of the "critical zone", there still appears to be lack of consensus regarding its extent. Through the employment of gross dissection and standard histology analysis of twenty-five adult bilateral cadaveric scapulo-humeral regions (n = 50), this study aimed to quantify the degree of vascularity, or lack thereof, within the "critical zone" by evaluating its relative morphometric features. The demographic representation of the sample was also considered. Results: i) Mean diameter of arteriole lumen: 91.6±75.2 µm; ii) Mean diameter of entire arteriole: 119.8±87.1 µm; iii) Mean arteriole wall thickness: 15.1±9.5 µm; iv) Mean area occupied by an arteriole: 20644.4±3358.0 µm2; v) Mean number of arterioles within "critical zone": 14.6±8.7. All tissue samples displayed a scarce distribution of arterioles along the musculo-tendinous junction relative to the "critical zone". A directly proportional relationship between the morphometric parameters was indicated by positive strong correlations and accompanying statistically significant P values. As 66 % of the number of arterioles within the "critical zone" were distributed between the minimum value and the upper quartile, it was postulated to be hypovascular, therefore confirming the findings of previous studies.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.34 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300038en10.4067/S0717-95022016000300038
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	"Critical zone" Arterioles Vascularity Morphometric parameters
spellingShingle	"Critical zone" Arterioles Vascularity Morphometric parameters Naidoo,N Lazarus,L Satyapal,K. S The Histological Analysis of the Glenohumeral "Critical Zone"
description	The arterial integrity of the "critical zone" of the rotator cuff has led to much uncertainty regarding rotator cuff tendinopathy. As the region of the supraspinatus tendon is the most common area affected by impingement, its central aspect is situated approximately 10 mm from the insertion at the greater humeral tubercle. Although many studies have investigated the vascularity of the "critical zone", there still appears to be lack of consensus regarding its extent. Through the employment of gross dissection and standard histology analysis of twenty-five adult bilateral cadaveric scapulo-humeral regions (n = 50), this study aimed to quantify the degree of vascularity, or lack thereof, within the "critical zone" by evaluating its relative morphometric features. The demographic representation of the sample was also considered. Results: i) Mean diameter of arteriole lumen: 91.6±75.2 µm; ii) Mean diameter of entire arteriole: 119.8±87.1 µm; iii) Mean arteriole wall thickness: 15.1±9.5 µm; iv) Mean area occupied by an arteriole: 20644.4±3358.0 µm2; v) Mean number of arterioles within "critical zone": 14.6±8.7. All tissue samples displayed a scarce distribution of arterioles along the musculo-tendinous junction relative to the "critical zone". A directly proportional relationship between the morphometric parameters was indicated by positive strong correlations and accompanying statistically significant P values. As 66 % of the number of arterioles within the "critical zone" were distributed between the minimum value and the upper quartile, it was postulated to be hypovascular, therefore confirming the findings of previous studies.
author	Naidoo,N Lazarus,L Satyapal,K. S
author_facet	Naidoo,N Lazarus,L Satyapal,K. S
author_sort	Naidoo,N
title	The Histological Analysis of the Glenohumeral "Critical Zone"
title_short	The Histological Analysis of the Glenohumeral "Critical Zone"
title_full	The Histological Analysis of the Glenohumeral "Critical Zone"
title_fullStr	The Histological Analysis of the Glenohumeral "Critical Zone"
title_full_unstemmed	The Histological Analysis of the Glenohumeral "Critical Zone"
title_sort	histological analysis of the glenohumeral "critical zone"
publisher	Sociedad Chilena de Anatomía
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000300038
work_keys_str_mv	AT naidoon thehistologicalanalysisoftheglenohumeralcriticalzone AT lazarusl thehistologicalanalysisoftheglenohumeralcriticalzone AT satyapalks thehistologicalanalysisoftheglenohumeralcriticalzone AT naidoon histologicalanalysisoftheglenohumeralcriticalzone AT lazarusl histologicalanalysisoftheglenohumeralcriticalzone AT satyapalks histologicalanalysisoftheglenohumeralcriticalzone
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The Histological Analysis of the Glenohumeral "Critical Zone"

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