Shoulder position sense in volleyball players with infraspinatus atrophy secondary to suprascapular nerve neuropathy

2017 ◽  
Vol 28 (1) ◽  
pp. 267-275 ◽  
Author(s):  
S. Contemori ◽  
A. Biscarini
Keyword(s):  
Suprascapular Nerve ◽  
Position Sense ◽  
Volleyball Players ◽  
Shoulder Position ◽  
Infraspinatus Atrophy

Isolated Infraspinatus Atrophy Secondary to Suprascapular Nerve Neuropathy Results in Altered Shoulder Muscles Activity

2019 ◽  
Vol 28 (3) ◽  
pp. 219-228 ◽  
Author(s):  
Samuele Contemori ◽  
Andrea Biscarini
Keyword(s):  
Shoulder Girdle ◽  
Suprascapular Nerve ◽  
Shoulder Abduction ◽  
Shoulder Injuries ◽  
Response Latencies ◽  
Upper Trapezius ◽  
Volleyball Players ◽  
Shoulder Girdle Muscles ◽  
Semg Activity ◽  
Infraspinatus Atrophy

Context: Isolated infraspinatus atrophy (IIA) is a common condition among overhead activity athletes, which affects the hitting shoulder and is caused by suprascapular nerve injury. The loss of infraspinatus function could lead to altered activity of the glenohumeral and scapulothoracic (ST) muscles and compromise the optimal shoulder function. Objective: To assess the surface electromyographic (sEMG) activity patterns, relationships, and response latencies of relevant shoulder girdle muscles in professional volleyball players with IIA and in healthy control players. Design: Cross-sectional study. Setting: Research laboratory. Patients or Other Participants: Twenty-four male professional volleyball players (12 players with diagnosed IIA and 12 healthy players) recruited from local volleyball teams. Intervention(s): sEMG activity of anterior, middle, and posterior deltoid; upper, middle, and lower trapezius; and serratus anterior (SA) was recorded and evaluated during a movement of shoulder abduction in the scapular plane, monitored with an optoelectronic motion capture system. Main Outcome Measure(s): sEMG activity, relationships, and response latencies of the selected muscles were analyzed with analysis of variance models to highlight statistical differences within and between groups. Results: Athletes with IIA demonstrated significant higher deltoid and trapezius muscles activity and lower SA activity compared with the contralateral shoulder and healthy athletes. The shoulder with IIA also showed a higher activity ratio between the upper trapezius and other ST muscles in addition to anticipated activation of the upper trapezius and delayed activation of the SA, with regard to the onset of shoulder movement. Conclusions: This study highlighted altered shoulder muscle activity levels, ST muscles imbalances, and abnormal ST recruitment patterns in the hitting shoulder of professional volleyball players with IIA, secondary to suprascapular nerve neuropathy. Such shoulder girdle muscles’ impairments may compromise the optimal scapulohumeral rhythm and function, increasing the risk of acute and overuse shoulder injuries.

scholarly journals Isolated and painless infraspinatus atrophy in top-level volleyball players: report of two cases and review of the literature

1993 ◽  
Vol 51 (1) ◽  
pp. 125-129 ◽  
Author(s):  
Célia Harumi Tengan ◽  
Acary S. Bulle Oliveira ◽  
Beatriz Hitomi Kiymoto ◽  
Maria da Penha Ananias Morita ◽  
Jovany L. Alves de Medeiros ◽  
...  
Keyword(s):  
Shoulder Joint ◽  
Suprascapular Nerve ◽  
The Other ◽  
Review Of The Literature ◽  
Direct Trauma ◽  
Distal Branch ◽  
Infraspinatus Muscle ◽  
Volleyball Players ◽  
Intense Activity ◽  
Infraspinatus Atrophy

Isolated and painless infraspinatus atrophy and weakness are described in two top-level volleyball players. EMG revealed isolated denervation of the infraspinatus muscle. One athlete continued playing and his clinical features have not changed. The other recovered her muscle bulk and strength after stopping playing. These findings were attributed to intense activity of the shoulder joint, without any direct trauma. On clinical grounds, we did not consider these cases as true examples of entrapment neuropathy. Pathogenesis was related to traction of the distal branch of the suprascapular nerve during the act of reception of the ball («Manchete»).

scholarly journals Changes in Ankle Function of University Female Volleyball Players during the Menstrual Cycle: Muscle Strength, Joint Position Sense and Flexibility

2017 ◽  
Vol 32 (4) ◽  
pp. 503-507
Author(s):  
Akina HIGUCHI ◽  
Miku HONMA ◽  
Miyu YAMAMOTO ◽  
Yasuo TANAKA ◽  
Rena HAMANO ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Muscle Strength ◽  
Position Sense ◽  
Joint Position Sense ◽  
Joint Position ◽  
Volleyball Players ◽  
Ankle Function

scholarly journals Isolated and painless (?) atrophy of the infraspinatus muscle: left handed versus right handed volleyball players

1994 ◽  
Vol 52 (4) ◽  
pp. 539-544 ◽  
Author(s):  
Thiago D. Gonçalves Côelho
Keyword(s):  
Brachial Plexus ◽  
Muscle Atrophy ◽  
Suprascapular Nerve ◽  
Nerve Entrapment ◽  
Suprascapular Notch ◽  
Supraspinatus Muscle ◽  
Left Handed ◽  
Infraspinatus Muscle ◽  
Volleyball Players ◽  
Spinoglenoid Notch

The suprascapular nerve originates from the upper trunk of the brachial plexus or less frequently from the root of C5. It runs a short way and crosses the suprascapular notch. It innervates the supraspinatus muscle and the acromioclavicular and glenohumeral joints. Then, it crosses the lateral edge of the spine of the scapula passing through the spinoglenoid notch, and innervates the infraspinatus muscle. These are potential sites of injury to the suprascapular nerve. Three cases of suprascapular nerve entrapment causing an isolated infraspinatus muscle atrophy in volleyball players were studied. It is suggested the hypothesis that the nature of the smash, in which the athlete uses the arm violently, more than does in volleyball service or in the art of reception, is the key to the pathogenesis of the lesion in volleyball players.

scholarly journals Efficacy of throwing exercise with TheraBand in male volleyball players with shoulder internal rotation deficit: a randomized controlled trial

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Mohsen Moradi ◽  
Malihe Hadadnezhad ◽  
Amir Letafatkar ◽  
Zohre Khosrokiani ◽  
Julien S. Baker
Keyword(s):  
Rotator Cuff ◽  
Muscle Strength ◽  
Muscle Activation ◽  
Position Sense ◽  
Joint Position Sense ◽  
Emg Activity ◽  
Control Group ◽  
Joint Position ◽  
Rotator Cuff Muscle ◽  
Volleyball Players

Abstract Background The Glenohumeral internal-rotation deficit (GIRD) is related to the altered eccentric external-rotator (ER), the concentric internal-rotator (IR), muscle strength, and the ER: IR ratio. GIRD has been documented as a risk factor for shoulder injuries. However, few studies have investigated the effect of an exercise training on these parameters in athletes with GIRD. Therefore, the purpose of this study was to evaluate the effects of an 8-week throwing exercise with a TheraBand for retraining the rotator cuff on Electromyography (EMG) activity of selected muscles, rotator cuff muscle strength, the glenohumeral (GH) joint IR range of motion (ROM) and GH joint position sense in asymptomatic male volleyball players with GIRD. Methods Sixty male volleyball players with GIRD were randomized into either a training group or a control group. The experimental group underwent an 8-week throwing exercise with a TheraBand including 5 sessions of stretching and 3 sessions of strengthening exercises per week. The control group received an active self-exercise program. EMG (onset time and muscle activation), shoulder range of motion (ROMs), strength and GH joint position sense were all assessed pre and post trainings. Results There were statistically significant within-group differences in the EMG activity of the anterior deltoid (p = 0.005), middle deltoid (p = 0.007), posterior deltoid (p = 0.004), infraspinatus (p = 0.001) and supraspinatus (p = 0.001) muscles, IR ROM (p = 0.001), rotator cuff muscle strength ratio (p = 0.001), and GH joint position sense (p = 0.033) in the experimental group. A 2 × 2 analysis of variance with a mixed model design and independent and paired t-tests were used for statistical analysis. Conclusions Throwing exercise with a TheraBand improved shoulder muscle activation, IR ROM, rotator cuff muscle strength ratio and GH joint position sense in participants with GIRD. These findings may improve the treatment of GIRD in a clinical setting. Although the results are significant, further studies should follow up the long-term effects of the Throwing exercise with a TheraBand on GIRD. Trial registration Current Controlled Trials using the UMIN-RCT website with ID number of, UMIN000038416 “Retrospectively registered” at 2019/10/29.

scholarly journals A new anatomical insight into the aetiology of lateral trunk of suprascapular nerve neuropathy: isolated infraspinatus atrophy

2018 ◽  
Vol 40 (3) ◽  
pp. 333-341 ◽  
Author(s):  
Anna Fabis-Strobin ◽  
Miroslaw Topol ◽  
Jaroslaw Fabis ◽  
Kryspin Niedzielski ◽  
Michal Podgorski ◽  
...  
Keyword(s):  
Suprascapular Nerve ◽  
Insight Into ◽  
Infraspinatus Atrophy
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