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Severe injuries of the hand or single fingers require immediate treatment but surgical fixation methods are limited depending on soft tissue damage. Thus, it is very common that severe soft tissue damage along with poor osteosynthetic bone fixation results in a delayed healing process or nonunion. Low-intensity pulsed ultrasound (LIPUS) has been proven to stimulate bone formation in  in vitro  studies and also to significantly accelerate nonunion healing in animal studies and clinical trials but to date there are no data with respect to nonunion in phalanx fracture.    Case presentation  We report a case in which we successfully used LIPUS in a 19-year-old  Caucasian  man with a nonunion of his ring finger after injury and first treatment with K-wire osteosynthesis.    Conclusion  We recommend that LIPUS be considered as an option to treat nonunions in fractures of the hand, especially because it is a soft tissue conserving method with a good functional result.

Successful treatment of nonunion in severe finger injury with low-intensity pulsed ultrasound (LIPUS): a case report