Case-control Study on Individual Risk Factors of CTS

Study Overview
=================
Brief Summary
-----------------
This study is conducted to observe the characteristics of the risk factors of CTS in Chinese population.

Detailed Description
-----------------
Carpal tunnel syndrome (CTS), or median neuropathy at the wrist, is a medical condition in which the median nerve is compressed at the wrist, leading to paresthesia, numbness and muscle weakness in the hand. It's the most common neuro-compressive disease. With the development of the modern life, the morbidity of CTS is also raised. As a common disease, the study on etiology is very important in Carpal Tunnel Syndrome, which can improve the life quality of patients with carpal tunnel syndrome. The risk factors include individual factors such as age, gender, diabetes, Hypothyroidism, obesity, complication of systematic diseases, tobacco, injury and occupational factors. As most of the research were based on the population in western country and the life style and the ethnicity between Chinese people and western country people is quite different, there may be some similarities and differences in epidemiology. There is seldom similar research in China so that this study was conducted to observe the characteristics of these risk factors in Chinese population.

Official Title
-----------------
Case-control Study on Individual Risk Factors of Carpal Tunnel Syndrome

Conditions
-----------------
Carpal Tunnel Syndrome

Intervention / Treatment
-----------------
* Other: the disease


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: with the symptom numbness clinical and neural-electrophysiological diagnosed CTS Exclusion Criteria: suffered from other diseases that could cause numbness diagnosed clinically

Ages Eligible for Study
-----------------
Minimum Age: 41 Years
Maximum Age: 70 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
Accepts Healthy Volunteers

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Case Group<br>age between 41 and 70years. People in the case group with the symptom numbness and then were clinical and neural-electrophysiological diagnosed CTS. People in the control group would be exclude the symptom numbness. The case group included clinical diagnosed carpal tunnel syndrome which was divided into 4 parts every 10 years old age. The gender of the patients of the control group was matched to the case group and divided into 4 parts by age. | Other: the disease<br>* Observation the patients and non-patients<br>|
| Control Group<br>The present case-control study was based on the single medical center in Shanghai, China, in which more than 5000 CTS patients per year are treated. The hospital involved in the study is a university teaching hospital. Cases were recruited from the surgical wards and appropriate outpatient clinics, while the controls were recruited from the outpatient clinics. Both groups filled out a standardized questionnaire, and a standardized patient record was filled out by a hand surgeon. In addition, participants with jobs involving lifting and carrying of loads were interviewed. | Other: the disease<br>* Observation the patients and non-patients<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| general risk factors | Gender, age, smoking, wrist injury, diabetes mellitus, hypothyroidism and wrist working are all the risk factors of carpal tunnel syndrome. | 2014-2015 | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Carpal Tunnel Syndrome, etiology, risk factor