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Case Report
Humerus Shaft Fractures in Leisure Sport 'Flyfish Riding': 4 Cases Report
Bong Gun Lee, M.D., Ki Chul Park, M.D., Youn Ho Choi, M.D., Woo Sung Jung, M.D., Kyu Tae Hwang, M.D.
Journal of the Korean Fracture Society 2012;25(4):327-330.
DOI: https://doi.org/10.12671/jkfs.2012.25.4.327
Published online: October 19, 2012

Department of Orthopaedic Surgery, College of Medicine, Hanyang University, Seoul, Korea.

*Saeum Hospital, Seoul, Korea.

Address reprint requests to: Kyu Tae Hwang, M.D. Department of Orthopaedic Surgery, Hanyang University Hospital, 17 Haengdang-dong, Seongdong-gu, Seoul 133-792, Korea. Tel: 82-2-2290-8458, Fax: 82-2-2299-3774, rubyhk@naver.com
• Received: May 25, 2012   • Revised: July 2, 2012   • Accepted: August 19, 2012

Copyright © 2012 The Korean Fracture Society

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  • A fracture of the humeral shaft can occur by direct or indirect injury. Most occur as a result of direct injury mechanisms such as falls from a height, direct blows, and traffic accidents. Recently, the population enjoying watersports for leisure is increasing and 'flyfish riding', in which passengers ride an inflatable raft drawn by a motorboat, may cause humeral shaft fracture as twisting and axial compression forces occur on the humeral shaft while boarding. Accordingly, the incidence of humeral shaft fracture is expected to increase as more people are expected to enjoy leisure sport activities such as 'flyfish riding'. We report 4 cases of humeral fracture that occurred during this activity in the year 2011.
  • 1. Baek JH, Son SM, Kim SJ, Lee SK, Kim YW. Thrower's fracture on the shaft of the humerus: 4 cases report. J Korean Orthop Assoc, 2008;43:266-268.
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Fig. 1
(A) A largeinflatable raft (flyfish) is connected to a motorboat by rope. When the motor boat increases its speed, the flyfish floats over the water.
(B) Flyfish riders hold on to strips in a position of 90° flexion of the elbow and 45° external rotation and mild degrees of abduction of the shoulder.
jkfs-25-327-g001.jpg
Fig. 2
Anteroposterior radiographs show distal 1/3 humerus spiral fracture with butterfly fragment in all cases.
jkfs-25-327-g002.jpg
Fig. 3
(A) Preoperative radiograph shows distal 1/3 humerus spiral fracture with butterfly fragment.
(B) Immediate postoperative radiograph shows interfragmentary fixation with 1 cortical screw and plate fixation.
(C) Ten weeks after surgery, complete bone union is noted on anteroposterior radiograph.
jkfs-25-327-g003.jpg
Fig. 4
Internal rotator of the arm and flexor of the elbow may generate twisting and axial compression forces on the humerus. These forces may cause the humeral spiral fracture with butterfly fragment.
jkfs-25-327-g004.jpg

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    • Humerus Shaft Fractures Occurring in Fly Fishing Boat Riding: Injury Scene Analysis
      Hongri Li, Wan Sun Choi, Bong-gun Lee, Jae-hoo Lee, Younguk Park, Doohyung Lee
      The Korean Journal of Sports Medicine.2019; 37(4): 134.     CrossRef

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      Humerus Shaft Fractures in Leisure Sport 'Flyfish Riding': 4 Cases Report
      J Korean Fract Soc. 2012;25(4):327-330.   Published online October 31, 2012
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    Humerus Shaft Fractures in Leisure Sport 'Flyfish Riding': 4 Cases Report
    Image Image Image Image
    Fig. 1 (A) A largeinflatable raft (flyfish) is connected to a motorboat by rope. When the motor boat increases its speed, the flyfish floats over the water. (B) Flyfish riders hold on to strips in a position of 90° flexion of the elbow and 45° external rotation and mild degrees of abduction of the shoulder.
    Fig. 2 Anteroposterior radiographs show distal 1/3 humerus spiral fracture with butterfly fragment in all cases.
    Fig. 3 (A) Preoperative radiograph shows distal 1/3 humerus spiral fracture with butterfly fragment. (B) Immediate postoperative radiograph shows interfragmentary fixation with 1 cortical screw and plate fixation. (C) Ten weeks after surgery, complete bone union is noted on anteroposterior radiograph.
    Fig. 4 Internal rotator of the arm and flexor of the elbow may generate twisting and axial compression forces on the humerus. These forces may cause the humeral spiral fracture with butterfly fragment.
    Humerus Shaft Fractures in Leisure Sport 'Flyfish Riding': 4 Cases Report

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