註釋 ABSTRACT: Background: The purpose of this manuscript was to determine the effectiveness of eccentric strengthening in increasing pain-free grip (PFG) strength in a 39-year-old male with lateral epicondylosis. Lateral epicondylosis is one of the most common soft tissue lesions of the upper extremity. Therapeutic exercise programs that include eccentric loading have been reported to be beneficial. Method: A comprehensive search of the literature was performed using the PubMed, Cochrane, and PEDro databases. The final search string included: (lateral epicondyl*) AND (eccentric exercise) AND (grip strength). Articles were included if subjects were over the age of 18 and had lateral epicondylosis for more than one month, a reproducible treatment protocol was provided, the study had at least a 4 week follow-up, PFG strength was measured with a hand grip dynamometer, treatment included eccentric strengthening, and they were peer-reviewed controlled trials or systematic reviews. Articles published prior to 2003 and studies that excluded subjects who received corticosteroid injections were excluded from this review. Reference scanning was performed to account for titles which may not have been retrieved through the search string. Results: A total of 4 articles met the inclusion and exclusion criteria, and were used to reach a clinical decision. The selected articles included 1 systematic review, 2 randomized control trials (RCTs), and 1 controlled mono-center trial. All 4 articles used PFG strength measured by a handheld dynamometer as the primary main outcome measure. Discussion/Conclusion: This literature review concluded that eccentric strengthening produced an improvement in PFG strength in patients with lateral epicondylosis. However, there was no standardized protocol for the most effective prescription. Based on the available evidence, the decision was made to include eccentric strengthening in the treatment of this patient in conjunction with other common treatments, such as concentric strengthening and stretching. 