We have developed a portable MRI that can provide opportunities for mobile operation in many environments including screening and primary care suites. Here we showed clinical feasibility of mobile medical screening using the portable MRI. We transported the scanner to a tennis club and imaged the wrists of 21 junior tennis players. The image quality was high enough to detect the TFCC injuries in most cases. Our results indicate that the portable system could be applicable for mass screening and early diagnosis of wrist injuries.