Relationship between the critical shoulder angle and the development of rotator cuff lesions: a retrospective epidemiological study☆

Gomide, Leandro Cardoso; Carmo, Thiago Correa do; Bergo, Guilherme Henrique Moreira; Oliveira, Glauber Araújo; Macedo, Igor Severino

doi:10.1016/j.rboe.2017.06.002

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Sumário

ORIGINAL ARTICLE • Rev. bras. ortop. 52 (04) • Jul-Aug 2017 • https://doi.org/10.1016/j.rboe.2017.06.002 copy

Relationship between the critical shoulder angle and the development of rotator cuff lesions: a retrospective epidemiological study^☆ ☆ Study conducted at the Universidade Federal de Uberlândia, Departamento de Ortopedia e Traumatologia, Uberlândia, MG, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

OBJECTIVE:

To perform a retrospective epidemiological study of radiographs in order to evaluate the relationship between the anatomy of the scapula and the development of rotator cuff injuries (RCIs).

METHODS:

This study retrospectively evaluated the relation of the critical shoulder angle (CSA) and RCIs from January 2011 to November 2013; patients were examined in the Orthopedics and Traumatology Department of a university hospital. The CSA was measured by radiographic standardization of two groups: a control group of 34 asymptomatic shoulders and a study group of 44 shoulders with complete RCIs.

RESULTS:

The mean age in the control group was 59.97 years (45-84) and the mean age in the group with RCIs was 59.75 years (45-84). Regarding the CSA, the control group had a mean angle of 33.59° (±3.37) and the group with RCIs had a mean angle of 39.75° (±5.35; p< 0.007).

CONCLUSION:

There is an association between CSA and RCIs.

Keywords:
Acromion/radiography; Rotator cuff/radiography; Articular range of motion; Shoulder joint

	Group 1: Control	Group 2: Affected
n	34	44
Mean age (years)	59.97 (45–84)	59.75 (45–84)
Sex	19 women (55.9%) 15 men (44.1%)	26 women (59.1%) 18 men (40.9%)
Side	15 right (44.1%) 19 left (55.9%)	32 right (72.7%) 12 left (27.3%)

Crossed table	1	2	Total
Affected	10	34	44
Control	24	10	34
Total	34	44	78

Factor	Minimum	1° quartile	Mean	Median	3° quartile	Maximum	Standard deviation
Affected	30	36	39.75	39.5	43.75	52	5.348875
Control	28	30.75	33.588235	33.5	36	42	3.36756

Proportion in the table	1	2
Affected	0.128205128	0.435897436
Control	0.307692308	0.128205128

Sociedade Brasileira de Ortopedia e Traumatologia Al. Lorena, 427 14º andar, 01424-000 São Paulo - SP - Brasil, Tel.: 55 11 2137-5400 - São Paulo - SP - Brazil
E-mail: rbo@sbot.org.br

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[1] * Corresponding author. E-mail: leandro@orthomedcenter.com.br (L.C. Gomide).

Epidemiological analysis
Code:
Age:
Sex	F ( )		M ( )
Cuff injury	Yes ( )		No ( )
Dominant limb	Right ( )		Left ( )
Side	Right ( )	Left ( )	Both ( )
Status	Operated ( )		Non-operated ( )

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Relationship between the critical shoulder angle and the development of rotator cuff lesions: a retrospective epidemiological study☆ ☆ Study conducted at the Universidade Federal de Uberlândia, Departamento de Ortopedia e Traumatologia, Uberlândia, MG, Brazil.

ABSTRACT

OBJECTIVE:

METHODS:

RESULTS:

CONCLUSION:

Relationship between the critical shoulder angle and the development of rotator cuff lesions: a retrospective epidemiological study^☆ ☆ Study conducted at the Universidade Federal de Uberlândia, Departamento de Ortopedia e Traumatologia, Uberlândia, MG, Brazil.