Suprascapular nerve block results in a compensatory increase in deltoid muscle activity

McCully, Sean P.; Suprak, David N.; Kosek, Peter; Karduna, Andrew R.

doi:10.1016/j.jbiomech.2006.07.010

Cited by 47 publications

(31 citation statements)

References 46 publications

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“…5 The repetitive mechanical loading imposed on the upper limbs causes muscle fatigue and can lead to reduction in scapular humeral and scapular thoracic muscular control. 6 Over time, repetitive loading under diminished muscular control conditions can lead to injury that impairs an individual's ability to maintain ADL. 7 The greater susceptibility to pain or injury of the upper limb 8 in manual wheelchair users with cervical level spinal cord injury (SCI) is often attributed to the reduced number of innervated muscles available for controlling the trunk and upper limbs.…”

Section: Introductionmentioning

confidence: 99%

Effect of choice of recovery patterns on handrim kinetics in manual wheelchair users with paraplegia and tetraplegia

Raina

McNitt-Gray

Mulroy

et al. 2012

The Journal of Spinal Cord Medicine

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Background: Impact forces experienced by the upper limb at the beginning of each wheelchair propulsion (WCP) cycle are among the highest forces experienced by wheelchair users. Objective: To determine whether the magnitude of hand/forearm velocity prior to impact and effectiveness of rim impact force are dependent on the type of hand trajectory pattern chosen by the user during WCP. Avoiding patterns that inherently cause higher impact force and have lower effectiveness can be another step towards preserving upper limb function in wheelchair users. Methods: Kinematic (50 Hz) and kinetic (2500 Hz) data were collected on 34 wheelchair users (16 with paraplegia and 18 with tetraplegia); all participants had motor complete spinal cord injuries ASIA A or B. The four-hand trajectory patterns were analyzed based on velocity prior to contact, peak impact force and the effectiveness of force at impact. Results: A high correlation was found between the impact force and the relative velocity of the hand with respect to the wheel (P < 0.05). The wheelchair users with paraplegia were found to have higher effectiveness of force at impact as compared to the users with tetraplegia (P < 0.05). No significant differences in the impact force magnitudes were found between the four observed hand trajectory patterns. Conclusion: The overall force effectiveness tended to be associated with the injury level of the user and was found to be independent of the hand trajectory patterns.

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Section: Introductionmentioning

confidence: 99%

Effect of choice of recovery patterns on handrim kinetics in manual wheelchair users with paraplegia and tetraplegia

Raina

McNitt-Gray

Mulroy

et al. 2012

The Journal of Spinal Cord Medicine

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“…Proximal migration of the humeral head during abduction moments observed in patients with massive rotator cuff tears (Deutsch et al, 1996;Paletta, et al, 1997;Yamaguchi et al, 2000;Bezer et al, 2005) is assumed to be related to increased deltoid activity (McCully et al, 2006). The deltoids generate an increased force to compensate lost abduction torque of e.g.…”

Section: Introductionmentioning

confidence: 99%

Glenohumeral stability in simulated rotator cuff tears

Steenbrink

Groot

Veeger

et al. 2009

Journal of Biomechanics

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“…28) If there is rotator cuff tear, compensation mechanism for loss of abduction force by rotator cuff increases the deltoid force. 29,30) If an isolated supraspinatus tear is relatively small, glenohumeral stability is preserved with contraction of the large adductors (latissimus dorsi and pectoralis major muscles). 30,31) However, if cuff tear lesion is extended to posterior area, it disturbs 'force couple' mechanism, so it induces loss of compensation.…”

Section: Physiology and Mechanismmentioning

confidence: 99%

Reverse Total Shoulder Arthroplasty in the Massive Rotator Cuff Tear

Jeong¹,

Eun²

2014

Clin Shoulder Elbow

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In the patients of retracted massive rotator cuff tears, there are much of difficulty to functional recovery and pain relief. Nevertheless the development of treatment, there are still debates of the best treatments in the massive rotator cuff tears. Recenlty various of treatments are introduced; these are acromioplasty with debridement, biceps tenotomy, great tuberoplasty with biceps tenotomy, partial repair, mini-open rotator cuff repair, arthroscopic rotator cuff repair, soft tissue augmentation, tendon transfer, flap, hemiarthroplasty, and reverse total shoulder arthroplasty. That there is no difference of result for reverse total shoulder arthroplasty between patients who have massive rotator cuff tear without arthritis and patients who have cuff tear arthropathy. Reverse total shoulder arthroplasty is one of reliable and successful treatment options for massive rotator cuff tear. Especially it is more effective for patients who have a pseudoparalysis. (Clin Shoulder Elb 2014;17(3):145-150)

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Suprascapular nerve block results in a compensatory increase in deltoid muscle activity

Cited by 47 publications

References 46 publications

Effect of choice of recovery patterns on handrim kinetics in manual wheelchair users with paraplegia and tetraplegia

Effect of choice of recovery patterns on handrim kinetics in manual wheelchair users with paraplegia and tetraplegia

Glenohumeral stability in simulated rotator cuff tears

Reverse Total Shoulder Arthroplasty in the Massive Rotator Cuff Tear

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