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TECHNICAL PAPERS

Stability of Reconstructed Paralyzed Shoulders Using a Reflected Long Head Biceps Technique

[+] Author and Article Information
C. Y. Tang, A. F. T. Mak

Jockey Club Rehabilitation Engineering Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong

L. K. Hung, H. S. Wong, T. Pacaldo

Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Shatin, Hong Kong

J Biomech Eng 123(3), 227-233 (Aug 31, 1999) (7 pages) doi:10.1115/1.1372700 History: Received August 31, 1999; Received January 11, 2001
Copyright © 2001 by ASME
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References

Figures

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Experimental settings of the stability study (anterior view of specimen in 90 deg humeral elevation)
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(a) Anterior view of shoulder, with deltoid muscle retracted; the LHB was detached from the biceps muscle and reflected proximally at the transverse ligament; (b) and (c) anterior view through deltoid approach: (b) showing exit of the RLHB tendon, anterior to clavicle through fibers of deltoid muscle (c) view without deltoid muscle
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Through-deltoid tendon transfer using the RLHB tendon (posterior view of reconstructed shoulder in 90 deg humeral elevation)
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Subdeltoid approach, superioposterior view: (a) showing exit of RLHB tendon at posterior part of deltoid; (b) view without deltoid muscle
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Subdeltoid tendon transfer using RLHB tendon (posterior view of reconstructed shoulder in 90 deg humeral elevation)
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Displacement of center of humeral head (pre-operation) in response to 1.5 kg anterior load with intact joint (mean ± SEM). Effect of humeral rotation on displacement was not statistically significant. (Baseline=no load applied to muscles.) For post-operation condition, RLHB was directed to upper part of trapezius.
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Displacement of center of humeral head (post-operation) in response to 1.5 kg anterior load with intact joint (mean ± SEM). Humerus was rotated from 0 to 45 deg externally. For post-operation condition, RLHB was directed to upper part of trapezius.
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Displacement of center of humeral head (pre- and post-operation) in response to 1.5 kg anterior load of intact joint and after tendon transfer with no external rotation (mean ± SEM). For post-operation condition, RLHB was directed to upper part of trapezius.
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Displacement of center of humeral head in response to 1.5 kg anterior load after tendon transfer (mean ± SEM). Reflected long head biceps was directed to upper, middle, and lower parts of trapezius.
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Total displacement of center of humeral head under inferior or posterior loadings (through-deltoid technique, 0 deg elevation, measurements in mm, mean ± SEM)
Grahic Jump Location
Total displacement of center of humeral head under inferior or posterior loading (subdeltoid technique, 0 deg elevation, measurements in mm, mean ± SEM)
Grahic Jump Location
Total displacement of center of humeral head under inferior or posterior loading (through-deltoid technique, 45 deg elevation, measurements in mm, mean ± SEM)
Grahic Jump Location
Total displacement of center of humeral head under inferior or posterior loading (subdeltoid technique, 45 deg elevation, measurements in mm, mean ± SEM)
Grahic Jump Location
Total displacement of center of humeral head under inferior or posterior loading (through-deltoid technique, 90 deg elevation, measurements in mm, mean ± SEM)
Grahic Jump Location
Total displacement of center of humeral head under inferior or posterior loading (through-deltoid technique, 90 deg elevation with 45 deg ER, measurements in mm, mean ± SEM)
Grahic Jump Location
Total displacement of center of humeral head under inferior or posterior loading (subdeltoid technique, 90 deg elevation, measurements in mm, mean ± SEM)
Grahic Jump Location
Total displacement of center of humeral head under inferior or posterior loading (subdeltoid technique, 90 deg elevation with 45 deg ER, measurements in mm, mean ± SEM)

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