Tıp Fakültesi / Faculty of Medicine

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    The effect of smartphone usage on the median nerve
    (2018) Ilik, Faik; Buyukgol, Huseyin; Eren, Fatma A.; Ilik, Mustafa K.; Kayhan, Fatih; Kose, Hatice
    Purpose: The aim of this study was to examine the effects of smartphone use on the median nerve. Materials and Methods: Participants were classified into three groups according to their smartphone use frequencies; high smartphone users (with Smartphone addiction scale (SAS) score of higher than 71), low smartphone users (SAS score less than 71) and classical type mobile phones users. The Visual analogue scale (VAS), quick-disabilities of arm, shoulder, hand (qDASH) and median nerve conductions of the participants were assessed. Groups were compared to each other as well as dominant and non-dominant hand nerve measurements of participants were also compared. Results: VAS and qDASH values were not significantly different between groups. It was observed that the rare use of smartphones affected the median nerve conductions in a lesser manner compared to the classical mobile phone use. However, using smart phone in an increasing rate influenced the median nerves adversely. Conclusion: Excessive use of smartphone can lead to carpal tunnel syndrome via affecting the median nerve. In recent decades, there has been a widespread use of smartphones even at the level of addiction. This should be noted while designing the smartphones and voice applications should be used more often. Furthermore, it can be beneficial to follow up the median nerve conductions of patients who are addicted to smartphones with the help of electrophysiological studies.
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    Effects of chronic flexed wrist posture on the elasticity and cross-sectional area of the median nerve at the carpal tunnel among chronic stroke patients
    (2018) Aslan, Hulya; Analan, Pinar Doruk; 0000-0002-3528-3712; 29400371; AAA-8043-2021
    Aim: To investigate the effects of chronic flexed wrist posture following spasticity on the elasticity and cross-sectional area (CSA) of the median nerve at the carpal tunnel among chronic stroke patients. Material and method: This prospective study included 24 consecutive patients (mean age, 56.5 +/- 11.56 years) with unilateral wrist spasticity following a stroke in a chronic phase. The CSA of the median nerve was measured by ultrasound (US). The elasticity was measured by Virtual Touch tissue imaging quantification (VTIQ; Siemens, Erlangen, Germany). SWV and CSA of the median nerves of the affected and unaffected sides for each patient were compared. The correlations between duration of time since the stroke, SWV and CSA of the median nerve were assessed. The interobserver agreement was assessed. Results: The CSA of the median nerve at the affected side was significantly lower than that of the unaffected side (p = 0.03). The SWV of the median nerve at the affected side was significantly higher than that on the unaffected side (p < 0.001). The interobserver agreement was excellent for both CSA and SWV measurements. There was a negatively fair correlation between CSA at the affected side and duration of time since stroke (r = -0.58, p < 0.05). The SWV of the median nerve at the affected side was not correlated with the duration of time since stroke (r <= 0.3, p >= 0.05). Conclusions: These results suggest that chronic flexed wrist posture may cause atrophy of the median nerve due to chronic compression after stroke and increase in the stiffness of the median nerve.