Motion of the Shoulder Complex During Multiplanar Humeral Elevation

Ludewig, Paula M.; Phadke, Vandana; Braman, Jonathan P.; Hassett, Daniel R.; Cieminski, Cort J.; LaPrade, Robert F.

doi:10.2106/jbjs.g.01483

Cited by 551 publications

(502 citation statements)

References 33 publications

(68 reference statements)

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“…The present study also demonstrated that scapular internal or external rotation differed significantly according to the plane of elevation, The scapula was internally rotated during flexion, with no change compared to its resting position during scapular plane elevation, and it was externally rotated during abduction. Similar effects dependent on the plane of elevation have been described, with the scapula reportedly internally rotated by an average of 7° during flexion compared to scapular plane elevation and externally rotated by an average 7.5° during abduction compared to scapular plane elevation 4) . However, that study combined data obtained from both men and women.…”

Section: Resultssupporting

confidence: 70%

“…It is commonly thought that the collapse of scapulohumeral rhythm may predict glenohumeral dysfunction 3,5,11) . Upward rotation, posterior tilt, and internal rotation of the scapula reportedly increase with glenohumeral elevation, and the internal and external rotation angles differ significantly between the planes of elevation during glenohumeral flexion, scapular plane elevation, and abduction 4) . Many previous studies of scapular kinematics have considered various planes of elevation and tasks.…”

Section: Introductionmentioning

confidence: 88%

“…The scapula alone can move in various ways. Many studies have measured and analyzed shoulder motion with a variety of methods [2][3][4][5][6][7][8] . Scapulohumeral rhythm changes with load or velocity and with the phase of the elevation angle, and thus its value is not constant [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

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Analysis of scapular kinematics in three planes of shoulder elevation: A comparison between men and women

Nakayama

Onishi

Nojima

et al. 2018

JPFSM

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The aim of this study was to compare scapular kinematics between men and women during shoulder flexion, scapular plane elevation, and shoulder abduction. Eleven healthy men and 11 healthy women participated in this study. As participants performed shoulder flexion, scapular plane elevation, and abduction at a consistent speed, an electromagnetic motion capture system was used to analyze scapular motion. The change in scapular orientation from its resting position was calculated at 30°, 60°, 90° and 120° of humeral elevation. The study found that scapular upward rotation and posterior tilt angles increased significantly with each successive humeral elevation angle, but less so in women than in men. Scapular internal or external rotation differed significantly according to the plane of elevation, that is the scapula was internally rotated during flexion, with no change during scapular plane elevation, and it was externally rotated during abduction. This variation was more marked in women. This study revealed gender differences in scapular kinematics during shoulder motion. During shoulder elevation, the scapulothoracic joint played a greater role in men than in women, whereas the glenohumeral joint played a greater role in women.

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Section: Resultssupporting

confidence: 70%

Section: Introductionmentioning

confidence: 88%

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Analysis of scapular kinematics in three planes of shoulder elevation: A comparison between men and women

Nakayama

Onishi

Nojima

et al. 2018

JPFSM

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show abstract

“…Except for the medial rotation, the values reported by Ludewig et al 25 are similar to those found in this study, in which the effect of the movement of sensors on the skin of volunteers on the values found was considered minimum.…”

Section: Discussionsupporting

confidence: 89%

“…Ludewig et al 25 found similar results with values of 5° of upward rotation, 41° of medial rotation and 13° of anterior tilt in a sample of healthy subjects and using electromagnetic sensors attached to pins transcortically inserted into the bones of the shoulder complex 25 . Except for the medial rotation, the values reported by Ludewig et al 25 are similar to those found in this study, in which the effect of the movement of sensors on the skin of volunteers on the values found was considered minimum.…”

Section: Discussionmentioning

confidence: 70%

Confiabilidade da avaliação da orientação e posição de repouso da escápula de indivíduos saudáveis e sedentários com o sistema eletromagnético de aquisição de dados

Biazotto

Camarini

Tucci

et al. 2014

Rev. Bras. Cineantropom. Desempenho Hum.

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-Electromagnetic systems for motion analysis are claimed as a precise technique for tracking position and orientation of human body segments. To date, reliability electromagnetic tracking was described only for the dynamic assessment of the scapula motion, and no reliability studies on its resting posture or positioning were found. The aim of this study was to analyze intra-and inter-session reliabilities and absolute errors of the scapular orientation and position at habitual resting posture in healthy individuals. Twenty-two shoulder symptom-free individuals non participants in professional or recreational sports activities involving upper extremities were volunteers in this study. The equipment used was 3SPACE Liberty system (Polhemus Inc.). The same examiner collected the kinematic data from subjects in two different sessions, with an interval from seven to ten days. Intraclass Correlation Coefficient (ICC 2,1 and ICC 2, k ) and Standard Error of Measurement (SEM) were calculated. Inter-session reliability ranged from good to excellent (ICC from 0.66 to 0.96) and intra-session reliability was excellent (ICC ≥ 0.97). SEM values found for linear distances were smaller than 0.02 cm and scapular rotations ranged from 0.72° to 5.48°. Results of this study demonstrated that electromagnetic data acquisition of scapula habitual posture is a reliable tool for defining scapular position and orientation in sedentary shoulder symptom-free individuals. Key words: Biomechanics; Physical therapy; Posture; Reproducibility of results; Shoulder. Resumo -Sistemas eletromagnéticos para análise de movimento são conhecidos como precisos para registrar a posição e orientação dos segmentos do corpo humano. Até o momento, a confiabilidade do registro eletromagnético foi descrita apenas para a dinâmica da escápula, não sendo encontrados estudos de confiabilidade da posição de repouso ou postura da mesma. O objetivo deste estudo foi a análise da confiabilidade intra-e inter-sessão e erros

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The anatomy of the clavicle

et al. 2013

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The clavicle has a complex osteologic structure that makes morphological analysis extremely difficult. A three-dimensional study was conducted to examine the anatomical variations and characteristics of the bone. Sixty-eight human cadaver clavicles were dissected, CAT-scanned, and reconstructed. An automated parameterization and correspondence shape analysis system was developed. A new length, designated as centerline (CL) length, was defined and measured. This length represents the true length of the clavicle. The endpoint length was measured as the distance between two endpoints. The width and curvature were measured in the axial (AX) and frontal (FR) plane and defined along the CL. Next gender and side characteristics and variations were examined. The mean CL length was 159.0 ± 11.0 mm. The mean endpoint length was 149.4 ± 10.3 mm, which was statistically significantly shorter than the CL. The male clavicle was significantly longer (166.8 ± 7.3 mm vs. 151.0 ± 8.2 mm), wider (14.6 ± 1.5 mm vs. 12.7 ± 1.3 mm lateral FR plane, 25.9 ± 4.1 mm vs. 23.5 ± 3.0 mm lateral AX plane and 24.7 ± 2.8 mm vs. 22.8 ± 2.8 mm medial AX plane), and more curved (10.8 ± 2.8 mm vs. 8.6 ± 2.3 mm medial and 10.5 ± 3.3 mm vs. 9.1 ± 2.5 mm lateral) than the female one. Left clavicles were significant longer (159.8 ± 10.9 mm vs. 158.0 ± 11.2 mm) than right clavicles. A novel three-dimensional system was developed, used and tested in order to explore the anatomical variations and characteristics of the human clavicle. This information, together with the automated system, can be applied to future clavicle populations and to the design of fixation plates for clavicle fractures.

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Motion of the Shoulder Complex During Multiplanar Humeral Elevation

Abstract: Overall shoulder motion consists of substantial angular rotations at each of the four shoulder joints, enabling the multiple-joint interaction required to elevate the arm overhead.

Cited by 551 publications

References 33 publications

Analysis of scapular kinematics in three planes of shoulder elevation: A comparison between men and women

Analysis of scapular kinematics in three planes of shoulder elevation: A comparison between men and women

Confiabilidade da avaliação da orientação e posição de repouso da escápula de indivíduos saudáveis e sedentários com o sistema eletromagnético de aquisição de dados

The anatomy of the clavicle

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