The Role of the Scapula

Paine, Richmond S.; Voight, Michael

doi:10.2519/jospt.1993.18.1.386

Cited by 193 publications

(177 citation statements)

References 4 publications

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“…15,[17][18][19] Motions that bring the greater tuberosity in closer contact with the coracoacromial arch 20 are particularly problematic. These motions include excessive superior or anterior translations of the humeral head on the glenoid fossa, inadequate lateral (external) rotation of the humerus, and decreases in the normal scapular upward rotation and posterior tipping on the thorax, all occurring during humeral elevation.…”

mentioning

confidence: 99%

“…15,[17][18][19][20] Additionally, the hypothesized kinematic alterations in scapular motion have been linked to decreases in serratus anterior muscle activity, increases in upper trapezius muscle activity, or an imbalance of forces between the upper and lower parts of the trapezius muscle. 17,19,21 Evidence to support the existence of abnormal electromyographic (EMG) or kinematic patterns in people with shoulder pain is limited. Investigations of altered scapulothoracic EMG patterns in patient populations have been nonspecific regarding subject diagnoses or restricted to testing of athletic activities.…”

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confidence: 99%

“…16,17,19,29 -31 In particular, the muscular control of the scapula has become a recent focus of therapeutic intervention. 17,19 Due to limited scientific data from which to design exercise programs, these programs often vary widely. 16,17,19,30,31 Although previous investigations have provided important contributions, they are often constrained by static analysis, 25,27 2-D analysis, 25,26 varied patient diagnoses, 24,25 a lack of control for exposure to overhead activity between subjects with and without symptoms of impingement, 24 -28 small sample sizes, 22,25,26,28 or other methodologic limitations.…”

mentioning

confidence: 99%

“…17,19 Due to limited scientific data from which to design exercise programs, these programs often vary widely. 16,17,19,30,31 Although previous investigations have provided important contributions, they are often constrained by static analysis, 25,27 2-D analysis, 25,26 varied patient diagnoses, 24,25 a lack of control for exposure to overhead activity between subjects with and without symptoms of impingement, 24 -28 small sample sizes, 22,25,26,28 or other methodologic limitations. [22][23][24]28 The purpose of our study was to provide a 3-D analysis of both glenohumeral and scapulothoracic kinematics and associated scapulothoracic muscle activity in subjects with symptoms of shoulder impingement relative to subjects without shoulder impairment who were matched for occupational exposure to overhead work.…”

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confidence: 99%

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Alterations in Shoulder Kinematics and Associated Muscle Activity in People With Symptoms of Shoulder Impingement

2000

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Background and Purpose. Treatment of patients with impingement symptoms commonly includes exercises intended to restore "normal" movement patterns. Evidence that indicates the existence of abnormal patterns in people with shoulder pain is limited. The purpose of this investigation was to analyze glenohumeral and scapulothoracic kinematics and associated scapulothoracic muscle activity in a group of subjects with symptoms of shoulder impingement relative to a group of subjects without symptoms of shoulder impingement matched for occupational exposure to overhead work. Subjects. Fifty-two subjects were recruited from a population of construction workers with routine exposure to overhead work. Methods. Surface electromyographic data were collected from the upper and lower parts of the trapezius muscle and from the serratus anterior muscle. Electromagnetic sensors simultaneously tracked 3-dimensional motion of the trunk, scapula, and humerus during humeral elevation in the scapular plane in 3 handheld load conditions: (1) no load, (2) 2.3-kg load, and (3) 4.6-kg load. An analysis of variance model was used to test for group and load effects for 3 phases of motion (31°-60°, 61°-90°, and 91°-120°). Results. Relative to the group without impingement, the group with impingement showed decreased scapular upward rotation at the end of the first of the 3 phases of interest, increased anterior tipping at the end of the third phase of interest, and increased scapular medial rotation under the load conditions. At the same time, upper and lower trapezius muscle electromyographic activity increased in the group with impingement as compared with the group without impingement in the final 2 phases, although the upper trapezius muscle changes were apparent only during the 4.6-kg load condition. The serratus anterior muscle demonstrated decreased activity in the group with impingement across all loads and phases. Conclusion and Discussion. Scapular tipping (rotation about a medial to lateral axis) and serratus anterior muscle function are important to consider in the rehabilitation of patients with symptoms of shoulder impingement related to occupational exposure to overhead work. [Ludewig PM, Cook TM. Alterations in shoulder kinematics and associated muscle activity in people with symptoms of shoulder impingement. Phys Ther. 2000;80:276 -291.]

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confidence: 99%

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Alterations in Shoulder Kinematics and Associated Muscle Activity in People With Symptoms of Shoulder Impingement

2000

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“…When weakness or dysfunction of the scapular musculature is present, normal scapular positioning and mechanics may become altered [1] [2]. Abnormal motion of the scapula has variety of etiologies, and there are a number of case reports describing this condition following the non-operative treatment of displaced diaphysis fractures of the clavicle [3].…”

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confidence: 99%

Influence of Displaced Clavicle Fracture toward Scapular Motion

Rasyid¹

2017

OALib

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Displaced clavicle fracture can result in varying degrees of scapular motion and potentially to be winged scapula, which in the end of its journey will cause axioscapular dull-ache pain, which is often undiagnosed. The purpose of this study was to analyze the influence of clavicle fracture in different locations and its impact on the motion of scapula horizontally and vertically by measuring axioscapular distance. The inclusion criteria were patients suffering from closed displaced clavicle fracture. Motion of the scapula was observed radiologically. Statistical analysis using Chi-square test was performed. We may conclude that the lateral fracture of clavicle may have superior migration of the scapula and greater distance horizontally.

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Shoulder Injuries in Sport

Horsley

2010

Sports Rehabilitation and Injury Prevention

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The Role of the Scapula

Cited by 193 publications

References 4 publications

Alterations in Shoulder Kinematics and Associated Muscle Activity in People With Symptoms of Shoulder Impingement

Alterations in Shoulder Kinematics and Associated Muscle Activity in People With Symptoms of Shoulder Impingement

Influence of Displaced Clavicle Fracture toward Scapular Motion

Shoulder Injuries in Sport

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