To investigate the prevelance of the de quervain tenosynovitis among the Egyptian medical students with smartphone addiction

Addictive participants will be assigned and enrolled in the study according to there addiction score on smartphone addiction scale.

Participants will receive a Finkelstein test for both dominant and non dominant hand for the de quervain tenosynovitis.

Then the strentgh of both hand grip and pinch grip for both hands will be tested using hand grip strength dynamometer and pinch strentgh dynamometer.

Inclusion Criteria:

• Asymptomatic students with normal healthy state
• Any student in all the academic years with age 18-25
• Addictive smart phone users with score over 31 for male and 33 for female students in smart phone addiction scale.
• Who own or use mobile.
• Both genders: male and female
• Willing to participate.
• Egyptian students

Exclusion Criteria:

• Those who don't have mobile phone.
• Any previous injury or trauma or surgery and a history of rheumatoid arthritis, osteoarthritis, and deformities and changes in the shape of the finger joints.
• Those who are not willing to participate.
• Non-Egyptian students.

The study population will be recruited from the medical collages of Cairo University in Egypt