الفهرس 
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Abstract
Diabetes mellitus is a group of metabolic diseases characterized by elevated blood glucose level (hyperglycemia) resulting from defects in insulin secretion, insulin action or both (American Diabetes Association 1998). There are 422 million adults were living with diabetes in 2014 that is about 8.5% in the adult population (NIDDK 2009).
Our aim was to assess the value of head shake Motor Control Test (HS-MCT) in type 2 diabetic patients. This case control study involved 30 patients, with documented controlled type 2 diabetes mellitus and 10 normal adults with matched age.
All subjects were submitted to detailed medical history taking, otoscopic examination, basic audiological evaluation and vestibular assessment. Vestibular assessment including Vestibular office tests in the form of vestibule-ocular reflex (VOR) tests and vestibule-spinal reflex (VSR) tests. Computerized dynamic posturography including Motor Control Test (MCT) and Head Shake Motor Control Test (HS- MCT) in 3 different planes.
Comparison between the case and control group we found that there was significant prolonged automatic response latencies of MCT in the patient group compared to the control group.
As regard Comparison between MCT and HS-MCT in the study group we found that there was significant difference between MCT and HS-MCT mostly in amplitude scaling parameter which is a new result suggesting increase the sensitivity of the MCT by head movements.
In this study there was significant correlation between duration of treatment, age & MCT, HS-MCT mostly in backward measures than forward measures.
So, we can conclude that Motor Control Test is an important test for detecting peripheral neuropathy associated with type 2 DM and HS-MCT can be a good enhancement and supplement to Motor Control Test.
Recommendations
1-HS-MCT should be included in assessment of diabetic patients to detect subtle effect of diabetes mellitus on the patient stability.
2- The test will help in developing rehabilitation programs to decrease risk of fall.