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Radiographic landmark for humeral head rotation: a new radiographic landmark for humeral fracture fixation.

Author information

Affiliations

  • 1. Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China.
      Authors
    • Tan J 1
    (1 author)
  • 2. Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, Republic of Korea.
      Authors
    • Lee HJ 2
    (1 author)
  • 3. Department of Orthopaedic Surgery, Asan Medical Center, School of Medicine, University of Ulsan, Seoul, Republic of Korea.
      Authors
    • Aminata I 3
    • Chun JM 3
    • Kekatpure AL 3
    • Jeon IH 3
    (4 authors)

Injury, 01 Nov 2014, 46(4):666-670
https://doi.org/10.1016/j.injury.2014.10.059 PMID: 25467709 

Abstract 

Background

There is no definite radiographic landmark in plain radiographs for proximal humeral rotation, which is an important parameter for avoiding rotational malalignment during fracture fixation. Here, we used radiographic images of cadaveric humeri to determine whether the landmark of the crest of lesser tuberosity (CoLT) in plain radiographs could be used to determine humeral rotation.

Methods

Twenty adult cadaveric humeri were collected and seven consecutive radiographic anteroposterior views (45°, 30°, 15° internal rotation; neutral rotation; and 15°, 30°, 45° external rotation) were obtained for each specimen.

Results

The proportional distance (PD) of the CoLT landmark relative to the humeral head was measured and analysed. The mean PDs of the CoLT landmark were 10.2%, 17.9%, 25.6%, 35.9%, 53.4%, and 62.9% of the diameter of the humeral head, corresponding to 45°, 30°, and 15° external rotation, neutral rotation, and 15° and 30° internal rotation, respectively. We found significant differences in the mean PDs with humeral rotation.

Conclusion

The projection of the CoLT in plain radiographs can be used as an important landmark to assess humeral head rotation and will be a useful landmark for rotational control of fracture fixation.

Full text links 

Read article at publisher's site: https://doi.org/10.1016/j.injury.2014.10.059

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Funding 

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Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea (1)