scholarly journals Grip Strength: Influence of Head-Neck Position in Normal Subjects

2012 ◽  
Author(s):  
Kumar
Keyword(s):  
Grip Strength ◽  
Normal Subjects ◽  
Neck Position ◽  
Head Neck

Elbow and hand muscle strength are not affected by head--neck position

1998 ◽  
Vol 7 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Y.C. Rex Wong ◽  
Denise Cameron ◽  
Richard W. Bohannon
Keyword(s):  
Muscle Strength ◽  
Neck Position ◽  
Hand Muscle ◽  
Head Neck

Balance disorders in older persons: Quantification with posturography

1998 ◽  
Vol 119 (1) ◽  
pp. 89-92 ◽  
Author(s):  
Robert W. Baloh ◽  
Kathleen M. Jacobson ◽  
Jane A. Enrietto ◽  
Sonia Corona ◽  
Vicente Honrubia
Keyword(s):  
Older Persons ◽  
Normal Subjects ◽  
The Other ◽  
Vestibular Disorders ◽  
Dynamic Posturography ◽  
Balance Disorders ◽  
Static Posturography ◽  
Older Subjects ◽  
The Difference ◽  
Head Neck

We measured sway velocity using static and dynamic posturography in a group of young normal subjects and two groups of subjects older than 75 years; one older group considered their balance normal for their age, and the other reported imbalance. The latter group consisted of patients with documented peripheral and central vestibular disorders and patients with dizziness and imbalance of unknown cause. The velocity of sway was higher in older subjects than in younger subjects and in older subjects who reported imbalance than in age-matched controls. The difference was greater with dynamic posturography than with static posturography, but the posturography data provided little information about the cause of the imbalance and did not correlate with the frequency of reported falls. (Otolaryngol Head Neck Surg 1998;119:89-92.)

Cervical duraplasty with tenting sutures via laminoplasty for cervical flexion myelopathy in patients with Hirayama disease: successful decompression of a “tight dural canal in flexion” without spinal fusion

2014 ◽  
Vol 21 (5) ◽  
pp. 743-752 ◽  
Author(s):  
Hirotaka Ito ◽  
Keisuke Takai ◽  
Makoto Taniguchi
Keyword(s):  
Spinal Fusion ◽  
Grip Strength ◽  
Surgical Complications ◽  
Upper Extremities ◽  
Anterior Fusion ◽  
Forward Displacement ◽  
Hirayama Disease ◽  
Cervical Alignment ◽  
Neck Position ◽  
Cervical Motion

Object Hirayama disease, juvenile muscular atrophy of the distal upper extremity, is a rare type of cervical flexion segmental myelopathy and its etiology is still being debated. Two theories have been proposed: a “contact pressure” theory and “tight dural canal in flexion” theory. Previously reported treatments, including conservative neck collar therapy and surgical spinal fusion, used fixation of the cervical spine with the aim of avoiding contact pressure between the cord and anterior structures. On the other hand, treatment by duraplasty without spinal fusion has also been used, which aims at decompressing a tight dural canal in flexion by preventing abnormal forward displacement of the posterior dura mater without restricting cervical motion in young patients. The authors developed a new surgical approach for treating a tight dural canal in flexion in patients with Hirayama disease: cervical duraplasty with tenting sutures via laminoplasty without spinal fusion. With this treatment they aimed to both decompress the spinal cord and preserve as much cervical motion as possible. The purpose of this study was to assess the clinical outcomes of patients who underwent this new surgical procedure and to investigate the etiology of Hirayama disease. Methods Six male patients (age range 17–23 years) with Hirayama disease underwent surgery between 2006 and 2012. The pre- and postoperative anteroposterior diameters of the dural canal in the flexed neck position, grip strength of the bilateral upper extremities, cervical alignment (C2–7), and cervical local flexion range of motion were compared. The presence or absence of surgical complications was assessed. To investigate the comparison group of Hirayama disease treated with spinal decompression, the PubMed database was searched for all relevant Englishlanguage case reports and series published between 1990 and 2013. Results The postoperative anteroposterior diameters of the dural canal were significantly expanded in the flexed neck position (7.2 ± 2.2 mm preoperatively vs 9.8 ± 1.7 mm postoperatively, p = 0.001). Grip strength of the upper extremities significantly improved bilaterally (20 ± 14 kg preoperatively vs 26 ± 15 kg postoperatively, p = 0.001). No significant difference was observed between pre- and postoperative cervical alignment in the neutral neck position (7.7° ± 8.1° preoperatively vs 9.0° ± 7.7° postoperatively, p = 0.74) or the cervical local flexion angle in the flexed neck position at the corresponding level of laminoplasty (16.6° ± 5.1° preoperatively vs 15.0° ± 9.4° postoperatively, p = 0.8). No surgical complications were noted, except for transient CSF leakage, which was resolved after lumbar drainage. The systematic review identified 37 cases from 7 reports: 26 with spinal fusion only, 5 with duraplasty without fusion, and 6 with combined duraplasty and fusion. In the largest series, in which 12 cases were treated with anterior fusion, cervical alignment was maintained, but local flexion motion was significantly decreased as a result of fixation. Although significant improvements in or stabilization of grip strength occurred in all 7 reported studies regardless of decompression procedures, one major delayed surgical complication was noted in a patient treated with anterior fusion. The patient developed severe kyphotic changes, which required reconstruction surgeries. Conclusions Cervical duraplasty with tenting sutures via laminoplasty prevented abnormal forward displacement of the posterior dura mater while preserving normal anterior structures and flexion motion of the cervical spine without major surgical complications. The clinical improvements achieved by the authors' method support evidence that a tight dural canal in flexion largely contributes to segmental myelopathy in patients with Hirayama disease.

Effect of Head-Neck Position on Elbow Flexor Muscle Torque Production

1987 ◽  
Vol 67 (4) ◽  
pp. 517-521 ◽  
Author(s):  
Helga Deutsch ◽  
Hashem Kilani ◽  
Essam Moustafa ◽  
Nancy Hamilton ◽  
John P. Hebert
Keyword(s):  
Elbow Flexor ◽  
Flexor Muscle ◽  
Neck Position ◽  
Muscle Torque ◽  
Head Neck

Absence of Flexor Digitorum Superficialis Tendon in the Little Finger is not Associated with Decreased Grip Strength

2008 ◽  
Vol 33 (2) ◽  
pp. 205-207 ◽  
Author(s):  
M. E. PUHAINDRAN ◽  
S. J. SEBASTIN ◽  
A. Y. T. LIM ◽  
W. X. XU ◽  
Y. M. CHEN
Keyword(s):  
Grip Strength ◽  
Normal Subjects ◽  
Flexor Digitorum Superficialis ◽  
Significant Difference ◽  
Flexor Digitorum ◽  
Little Finger

We examined the little finger in 402 normal subjects for the presence or absence of the flexor digitorum superficialis. All subjects also had their grip strength measured. No statistically significant difference was seen in the grip strength measurements between subjects who had a flexor digitorum superficialis tendon to the little finger and those who did not. This study demonstrates that absence of the flexor digitorum superficialis to the little finger is not associated with decreased grip strength. The implications of this in terms of repair of the flexor digitorum superficialis of the little finger are considered.

scholarly journals Relationships between Postural Stability and Head-neck Position and Muscular Strength of the Toes of Elderly People

2019 ◽  
Vol 34 (1) ◽  
pp. 1-5
Author(s):  
Yasuhisa UEDA ◽  
Fumiko KAMIJO ◽  
Yuko OTAKE ◽  
Takahiro OKAWA ◽  
Masashi CHIYOMARU ◽  
...  
Keyword(s):  
Elderly People ◽  
Postural Stability ◽  
Muscular Strength ◽  
Neck Position ◽  
Head Neck
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