Angular Velocity Profiles of Upper Limb Joint Synergies in Reaching Movements: a pilot study*

Author(s):  
Lin Zhang ◽  
Bo W. Xiao ◽  
Xiao Y. Wu ◽  
Lin Chen ◽  
Yi L. Wang ◽  
...  
Author(s):  
Shangjie Tang ◽  
Michele Barsotti ◽  
Fabio Stroppa ◽  
Antonio Frisoli ◽  
Xiaoying Wu ◽  
...  

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 913.2-914
Author(s):  
T. Birinci ◽  
E. Kaya Mutlu ◽  
S. Altun

Background:Elbow fracture is treated either conservatively or surgically followed by a period of immobilization with casting or splinting. A splint used to immobilize upper limbs for many weeks results in changes in both the peripheral musculature and the central nervous system. It is well known that common complaints after upper limb fractures include weakness, pain, and stiffness; therefore, pain management is important in the early stages of the rehabilitation of upper limb fractures.Objectives:This pilot study aimed to investigate the efficacy of graded motor imaginary (GMI) on pain, range of motion (ROM), and function in patients with posttraumatic stiff elbow.Methods:Fourteen patients with posttraumatic stiff elbow (6 women, mean age: 45.42 ± 11.26 years, mean body mass index: 24.29 ± 3.38 kg\m2and mean duration of immobilization: 4.75 ± 1.03 weeks) were randomly allocated to either GMI or control groups. The GMI group received GMI treatment in addition to a structured exercise program, and the control group received a structured exercise program (two days per week for six weeks) (Figure 1). The assessments included pain at rest and during activity using the visual analog scale (VAS), elbow active ROM with a digital goniometer (Baseline Evaluation Instrument, Fabrication Enterprises, Inc., White Plains, NY), and upper extremity functional status using the Disability of the Arm, Shoulder and Hand Questionnaire (DASH). The assessments were performed at baseline and after the 6-week intervention.Figure 1.Graded motor imagery performed with mirror boxResults:After the 6-week intervention, there was a significant increase in elbow flexion-extension ROM and supination-pronation ROM, and improvement in DASH score in both groups (p<0.05). However, improvement in VAS-rest and VAS-activity was significantly higher in the GMI group than the control group (p=0.03 and p=0.01, respectively).Conclusion:A conservative treatment program consisting of GMI treatment in addition to a structured exercise program applied twice a week for 6 weeks, has been found more effective in decreasing pain in the posttraumatic stiff elbow. It could be concluded that GMI is an effective treatment method for elbow fracture in patients with predominant elbow pain.References:[1] Harris JE, Hebert A. Utilization of motor imagery in upper limb rehabilitation: a systematic scoping review. Clin Rehab. 2015:29(11):1092-1107.[2] Opie GM, Evans A, Ridding MC, Semmler JG. Short-term immobilization influences use-dependent cortical plasticity and fine motor performance. Neuroscience. 2016:330:247-256.[3] Birinci T, Razak Ozdincler A, Altun S, Kural C. A structured exercise programme combined with proprioceptive neuromuscular facilitation stretching or static stretching in posttraumatic stiffness of the elbow: a randomized controlled trial. Clin Rehab. 2019:33(2):241-252.Acknowledgments:The present work was supported by the Scientific Research Projects Coordination Unit of Istanbul University-Cerrahpasa (Project No: TDK-2019-33997).Disclosure of Interests:None declared


2013 ◽  
Vol 45 (2) ◽  
pp. 217-220 ◽  
Author(s):  
J Langan ◽  
K DeLave ◽  
L Phillips ◽  
P Pangilinan ◽  
S Brown

2015 ◽  
Vol 37 (5) ◽  
pp. 434-440 ◽  
Author(s):  
Yanna Tong ◽  
Brian Forreider ◽  
Xinting Sun ◽  
Xiaokun Geng ◽  
Weidong Zhang ◽  
...  

2008 ◽  
Vol 24 (3) ◽  
pp. 280-287 ◽  
Author(s):  
Yong “Tai” Wang ◽  
Konstantinos Dino Vrongistinos ◽  
Dali Xu

The purposes of this study were to examine the consistency of wheelchair athletes’ upper-limb kinematics in consecutive propulsive cycles and to investigate the relationship between the maximum angular velocities of the upper arm and forearm and the consistency of the upper-limb kinematical pattern. Eleven elite international wheelchair racers propelled their own chairs on a roller while performing maximum speeds during wheelchair propulsion. A Qualisys motion analysis system was used to film the wheelchair propulsive cycles. Six reflective markers placed on the right shoulder, elbow, wrist joints, metacarpal, wheel axis, and wheel were automatically digitized. The deviations in cycle time, upper-arm and forearm angles, and angular velocities among these propulsive cycles were analyzed. The results demonstrated that in the consecutive cycles of wheelchair propulsion the increased maximum angular velocity may lead to increased variability in the upper-limb angular kinematics. It is speculated that this increased variability may be important for the distribution of load on different upper-extremity muscles to avoid the fatigue during wheelchair racing.


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