Scapular and clavicular kinematics during humeral elevation: A study with cadavers

Fung, Mansheung; Kato, Sadafumi; Barrance, Peter J.; Elias, John J.; McFarland, Edward G.; Nobuhara, Katsuya; Chao, Edmund Y.S.

doi:10.1067/mse.2001.114496

Cited by 83 publications

(69 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the small sample for cadaver analysis, these differences also may simply relate to sample variation, as well as different skin tension between active and passive testing, or skin motion artifact with the use of surface sensors actively and direct bone-fixed measurement passively. In a similar cadaveric analysis of passive shoulder motion, Fung et al 10 have also demonstrated similar patterns of motion for the SC joint and scapula on the thorax as compared to active movements, although the magnitudes of motion are diminished early in the range of motion compared to active measurements in live subjects. Alternatively, passive motion could have been measured in vivo in our study; however, full muscle relaxation during such testing can be difficult to obtain.…”

Section: Discussionmentioning

confidence: 78%

Three-Dimensional Acromioclavicular Joint Motions During Elevation of the Arm

Teece¹,

Lunden²,

Lloyd³

et al. 2008

J Orthop Sports Phys Ther

107

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 78%

Three-Dimensional Acromioclavicular Joint Motions During Elevation of the Arm

Teece¹,

Lunden²,

Lloyd³

et al. 2008

J Orthop Sports Phys Ther

107

View full text Add to dashboard Cite

“…In the current study, the throwers in the control group demonstrated scapular kinematic patterns consistent (approximately ±5°) with other published research findings in normal shoulders. 1,4,6,18,21,27,33 In the current study, electromagnetic tracking technology was used to identify scapular position and orientation differences present between throwers with pathologic internal impingement and throwers without shoulder pain. Yet, these differences may be observed clinically as well.…”

Section: Discussionmentioning

confidence: 99%

Scapular Dysfunction in Throwers with Pathologic Internal Impingement

Laudner

Myers

Pasquale

et al. 2006

J Orthop Sports Phys Ther

192

153

View full text Add to dashboard Cite

Study Design: Case control group study. Objectives: To compare scapular position and orientation between baseball players with and without pathologic internal impingement. Background: Scapular dysfunction has been implicated as a contributor to throwing-related pathologic internal impingement of the shoulder due to its role in increasing the contact between the greater tuberosity and posterior-superior glenoid, thereby impinging the posterior rotator cuff tendon(s) and labrum. However, to date, no definitive data demonstrate this scapular dysfunction in throwing athletes. The purpose of this study was to assess, in a controlled laboratory environment, whether scapular position and orientation would be different in throwing athletes diagnosed with pathologic internal impingement than in a control group of throwing athletes. Methods and Measures: Eleven throwing athletes diagnosed with pathologic internal impingement, using both clinical examination and a magnetic resonance arthrogram, were demographically matched with a control group of 11 throwers with no history of upper extremity injury. An electromagnetic tracking device was used to measure scapular internal/external rotation, anterior/ posterior tilt, upward/downward rotation, sternoclavicular protraction/retraction, and elevation/ depression during humeral elevation within the scapular plane. Comparisons were made between groups with analysis of variance models (PϽ.05). Results:The individuals in the pathologic internal impingement group demonstrated statistically significant increased sternoclavicular elevation when elevating their humerus from 30°to 120°( P = .002) and from 60°to 120°(P = .003), compared to the control group. Furthermore, these patients also had increased posterior scapular tilt position (P = .016). No statistically significant differences were present in any other scapular variables measured. Conclusions: Based on the results of this study, throwing athletes diagnosed with pathologic internal impingement present with statistically significant increases in sternoclavicular elevation and scapular posterior tilt position during humeral elevation in the scapular plane.

show abstract

“…12 The available literature indicates that during elevation of the arm, SC and AC joint motions are both linked with scapular motion on the thorax. 5,9,12 The common anatomical descriptions of SC joint axes orientations and those of the scapula on the thorax are not directly parallel ( Figure 1B). When considering these differing axis alignments, elevation and posterior long-axis rotation at the SC joint should both occur with upward rotation of the scapula on the thorax.…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Clavicular Motion During Arm Elevation: Reliability and Descriptive Data

Ludewig¹,

Behrens²,

Meyer³

et al. 2004

J Orthop Sports Phys Ther

101

View full text Add to dashboard Cite

Study Design: Cross-sectional. Objectives: To determine the reliability of a surface sensor measurement of clavicular motion during arm elevation and to describe 3-dimensional clavicular motion in an asymptomatic population. Background: Abnormal scapular motion on the thorax has been implicated in shoulder pathology. Without the ability to measure clavicular motion, it is not possible to identify if abnormal scapular motions derive from the sternoclavicular or acromioclavicular joints. Methods and Measures: Thirty-nine subjects participated in the investigation, including an asymptomatic group (n = 30) and a group with a history or current symptoms of shoulder pathology (n = 9). Clavicular angles relative to the thorax were tracked with surface electromagnetic sensors on the thorax, clavicle, and humerus as subjects completed humeral flexion, scapular plane abduction, and abduction. Within-day reliability was assessed using intraclass correlation coefficients and SEM. Descriptive statistics quantified sternoclavicular joint motions for the various arm movements. Results: Reliable measurements were obtained, with intraclass correlation coefficients ranging from 0.93 to 0.99, and SEMs from 0.9°to 1.8°. Between-day reliability SEM values were generally 2°to 4°. During elevation of the arm, the clavicle with respect to the thorax generally undergoes elevation (11°-15°maximum), retraction (15°-29°maximum), and posterior long-axis rotation (15°-31°maximum), with variability between subjects and planes of motion regarding the magnitude of motion. Conclusion: Rehabilitation approaches attempting to improve shoulder motion should benefit from improved knowledge of 3-dimensional contributions of the clavicle to normal and abnormal scapular kinematics.

show abstract

Scapular and clavicular kinematics during humeral elevation: A study with cadavers

Cited by 83 publications

References 19 publications

Three-Dimensional Acromioclavicular Joint Motions During Elevation of the Arm

Three-Dimensional Acromioclavicular Joint Motions During Elevation of the Arm

Scapular Dysfunction in Throwers with Pathologic Internal Impingement

Three-Dimensional Clavicular Motion During Arm Elevation: Reliability and Descriptive Data

Contact Info

Product

Resources

About