Relationships between Physical Characteristics and Ultrasound and Physical Examination Findings of the Medial Epicondyle of the Humerus in Youth Baseball Players

• Published in: Physical Therapy Japan Vol. 48; no. 4; pp. 370 - 378
• Main Authors: SATOH, Osamu, YOSHIKAWA, Tatsuki, SATOH, Daiki, NAKAGAMA, Takashi, FUKAKI, Ryosuke, AKASAKA, Shigeru
• Format: Journal Article
• Language: Japanese
• Published: Japanese Physical Therapy Association 2021; 公益社団法人日本理学療法士協会
• Subjects: Baseball elbow injuries; Medial epicondyle of the humerus; Medical checkup; Ultrasonography; 上腕骨内側上顆; 検診; 超音波; 野球肘
• ISSN: 0289-3770; 2189-602X
• DOI: 10.15063/rigaku.11940

Objectives: This study aimed to investigate the relationships between ultrasound (US) and physical examination findings of the medial epicondyle of humerus based on baseball elbow screening conducted in Hakodate City, Hokkaido, in 2019.Methods: The subjects were 259 elementary school baseball players. US findings were classified into positive and negative groups. The players were listening for their physical characteristics and conducted the physical examination. Items with significant differences between the two groups were investigated in a logistic regression analysis.Results: Results indicated that 30 and 205 players had positive and negative US findings, respectively. There were significant differences between the two groups in the age, height, position, history of elbow pain, pain at end-range elbow flexion/extension, tenderness of the medial epicondyle of humerus (TD), moving valgus test (MVT). The logistic regression analysis extracted age, TD, and MVT.Conclusions: Among players with positive US findings, high odds ratios were found for age, TD and MVT.