Yasunari Fujii

Analysis of the Questionnaire on the Sport Injury to High-school Baseball Pitchers.

Background: In this study, we attempted to determine the connection between throwing injuries, especially to the shoulder or elbow, and the amount of pitching practice, in high-school pitchers. Methods: We distributed questionnaires to 67 high-school baseball pitchers and had them answer questions on the following: their sports career, past sport-related injuries, the amount of baseball practice per day and per week, the number of throws per day, and the number of non-throwing day per week. Using an unpaired T-test, we looked for statistical relationships between throwing injuries and the above factors. Results: Of the 67 cases that answered our questionnaire, 53 (79.1%) answered that they had suffered sports-related injuries in their careers. Of these, 48 (71.6%) had suffered throwing injuries to the shoulder or elbow. Our examination showed that 34 pitchers (50.7%) currently had derangement of the shoulder or elbow, and the questionnaires showed that these pitchers had spent much more time practicing throwing in elementary school and junior high school than those without these problems. Conclusion: Excessive throwing practice in elementary school and junior high school may lead to derangement of the shoulder or elbow.

Three Cases of Burn Scar Cancer

Three cases of carcinoma developing in the burn scans are reported. Two cases are male and another is female. The ages at onset of cancer ranged from 44-years-old to 73-years-old (average: 58-years-old), and the time interval between burn and onset of cancer ranged from 15 years to 41 years (average: 31 years). The causes of the burn were as follows: the first case by boiling water, the second by bonfire and the the third unknown. All cases had ulcer formation with a large quantity of discharge and bad smell, and pathological diagnosis was squamous cell carcinoma. In all cases, amputation above the site of the lesions followed by chemothrapy was performed and satisfactory results were obtained at the short-time follow-up.