3D shoulder position measurements using a six-degree-of-freedom electromagnetic tracking device

Meskers, Carel G.M.; Vermeulen, H.; Groot, Jurriaan H. de; Helm, F.C.T. van der; Rozing, P. M.

doi:10.1016/s0268-0033(98)00095-3

Cited by 203 publications

(170 citation statements)

References 11 publications

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“…2,[16][17][18][19] There have been, however, few reports about AC motion using cadaver models, 20,21 roentgenography, 2 and the insertion of pins into the bone. 5 Recently, Meskers et al 3 and Pronk et al 4 evaluated in vivo motion of the clavicle and AC joint using 3D electromagnetic tracking systems. This system, however, has disadvantages such as the lack of 3D positional data of the clavicle due to recording only two bony landmarks.…”

Section: Discussionmentioning

confidence: 99%

“…This system, however, has disadvantages such as the lack of 3D positional data of the clavicle due to recording only two bony landmarks. 3,4 Ludewig et al 22 overcame this problem by applying surface electromagnetic sensors to skin with adhesive tape. They succeeded in measuring in vivo 3D clavicular motion including the axial rotation during dynamic arm elevation, although the skin motion artifact of the sensor would occur over approximately 1108 of arm abduction.…”

Section: Discussionmentioning

confidence: 99%

“…However, few reports exist describing the kinematics of the AC joint, and no general consensus has emerged as to whether this joint has any motion. [2][3][4][5] We explored this dilemma with a 3D kinematic analysis system that enables visualization and evaluation of the motion of any bone and joint using MR images. This system has been used previously to study kinematics of the cervical spine, elbow, and wrist.…”

Section: Introductionmentioning

confidence: 99%

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3D kinematic analysis of the acromioclavicular joint during arm abduction using vertically open MRI

Sahara

Sugamoto

Murai³

et al. 2006

J. Orthop. Res.

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Many researchers have evaluated the motions of the shoulder girdle, especially scapular and humeral motion. However, few reports exist that describe motions of the acromioclavicular joint. The purpose of the present study was to analyze the 3D kinematics of the acromioclavicular joint during arm abduction using 3D MR images obtained by a vertically open MRI. Fourteen shoulders of seven volunteers were examined in seven static positions from 08 to the maximum abduction in a seated position. 3D surface models of the clavicle and scapula were created, and the movements of the acromioclavicular joint from 08 to each position were calculated using the volume-based registration technique. From these calculations, the translations were evaluated and the rotational motions were analyzed using the concept of the screw axis. In the anteroposterior direction, the clavicle translated most posteriorly (À1.9 AE 1.3 mm) at 908 of abduction and most anteriorly (1.6 AE 2.7 mm) at maximum abduction. In the superoinferior direction, the clavicle translated slightly superiorly (0.9 AE 1.9 mm). When analyzing relative motion of the scapula with respect to the clavicle, the scapula generally rotated about a specific screw axis passing through the insertions of both the acromioclavicular and the coracoclavicular ligaments on the coracoid process. The average rotation was 34.9 AE 8.48. ß

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D kinematic analysis of the acromioclavicular joint during arm abduction using vertically open MRI

Sahara

Sugamoto

Murai³

et al. 2006

J. Orthop. Res.

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“…A fourth receiver was attached to a stylus, which was used for the digitization of landmarks described in the subsequent section. 24,25 While the subjects stood with their arms at their side, several bony landmarks on the thorax, scapula, and humerus of the dominant limb were palpated and digitized with the stylus. The digitized landmarks appear in Table 2.…”

Section: Methodsmentioning

confidence: 99%

Scapular Dysfunction in Throwers with Pathologic Internal Impingement

Laudner

Myers

Pasquale

et al. 2006

J Orthop Sports Phys Ther

192

153

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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.

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“…A number of studies have also 123 reported intra-observer and inter-observer reliabilities of the locator; the values are in 124 the ranges of 3-5° for the intra-observer and 4-6° for the inter-observer errors [de 125 Groot, 1997, Meskers et al, 1998] . The intra-observer errors were further improved 126 to 1-3.5° by Shaheen et al (2011a).…”

mentioning

confidence: 99%