International Orthopaedics

, Volume 42, Issue 11, pp 2639–2644 | Cite as

Bone mineralization changes of the glenoid in shoulders with symptomatic rotator cuff tear

  • Yohei HaradaEmail author
  • Shin Yokoya
  • Yuji Akiyama
  • Yu Mochizuki
  • Mitsuo Ochi
  • Nobuo Adachi
Original Paper



Computed tomography osteoabsorptiometry (CTO) is a method to analyze the stress distribution in joints by measuring the subchondral bone density. The purpose of this study was to evaluate the bone mineralization changes of the glenoid in shoulders with rotator cuff tears by CTO and to evaluate whether rotator cuff tears are associated with stress changes in the glenoid.


In total, 32 patients, who were diagnosed with unilateral rotator cuff tears and underwent arthroscopic rotator cuff repair, were enrolled in this study. They underwent CT scanning of both shoulders pre-operatively and the glenoid was evaluated using CTO. Hounsfield units (HU) in seven areas of the glenoid were compared between the affected and unaffected sides.


The central area of the glenoid on the affected side had significantly lower HU than on the unaffected side among all patients. Focusing on the rotator cuff tear size and the subscapularis tendon, only patients with larger cuff tears or with subscapularis tendon tears showed significantly lower HU in the central area of the affected side.


This study showed a decrease in bone mineralization density in the central glenoid in shoulders with rotator cuff tear. This change was observed in the case of larger cuff tears and subscapularis tendon tears. Our results help clarify the changes in stress distribution in the shoulder joint caused by symptomatic rotator cuff tears.


Computed tomography osteoabsorptiometry Rotator cuff tear Subchondral bone mineralization change Shoulder Glenoid 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The institutional review board approved this study.

This article was approved by our Ethical Committee of Research.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© SICOT aisbl 2018

Authors and Affiliations

  1. 1.Department of Orthopaedic SurgeryHiroshima City Hiroshima Citizens HospitalHiroshimaJapan
  2. 2.Department of Orthopaedic Surgery, Graduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
  3. 3.Department of Clinical RadiologyHiroshima University HospitalHiroshimaJapan
  4. 4.Department of Orthopaedic SurgeryHiroshima Prefectural HospitalHiroshimaJapan
  5. 5.Hiroshima UniversityHigashi-Hiroshima CityJapan

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