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Archives of Osteoporosis

, 13:3 | Cite as

Difference of clinical course between cases with bone union and those with delayed union following osteoporotic vertebral fractures

  • Hiroyuki YasudaEmail author
  • Masatoshi Hoshino
  • Tadao Tsujio
  • Hidetomi Terai
  • Takashi Namikawa
  • Minori Kato
  • Akira Matsumura
  • Akinobu Suzuki
  • Kazushi Takayama
  • Shinji Takahashi
  • Hiroaki Nakamura
Original Article

Abstract

Summary

In this prospective multicenter study of osteoporotic vertebral fractures (OVFs), delayed union of OVF at 6-month follow-up caused prolonged pain, QOL impairment, ADL impairment, cognitive status deterioration, and vertebral collapse progression.

Purpose

Delayed union following osteoporotic vertebral fracture displayed as an intravertebral cleft on plain X-rays was reported to be a factor for prolonged severe pain. However, the difference of clinical course between bone union and delayed union cases still remains unclear. The purpose of this study was to identify how OVF delayed union following conventional conservative treatment influences the clinical course with a prospective multicenter study.

Methods

A total of 324 OVF patients from 25 institutes in Osaka, Japan, were included in the study. At the 6-month follow-up after initial visit to each institute, the patients were classified into bone union and delayed union groups based on plain X-ray findings. The outcome assessments included a VAS for back pain, SF-36 for quality of life (QOL), severity of bed-ridden state for activities of daily living (ADL), MMSE for cognitive functions, and degree of vertebral collapse on plain X-rays.

Results

Overall, 280 patients were included into the union group and 44 into the delayed union group. The VAS score at 6 months was significantly worse in the delayed union group (p = 0.01). The scores for the SF-36 scales of physical functioning and bodily pain at 6 months were significantly lower in the delayed union group (p = 0.019, p = 0.01, respectively). The percentage of nearly or completely bed-ridden patients was significantly higher in the delayed union group. The percentage of newly developed cognitive impairment was significantly higher in the delayed union group (p = 0.02). Progression of vertebral collapse during the 6-month follow-up was more pronounced in the delayed union group (p < 0.01).

Conclusion

The present results revealed that delayed union following OVF causes prolonged pain, QOL impairment, ADL impairment, cognitive status deterioration, and vertebral collapse progression.

Keywords

Osteoporosis Vertebral fracture Clinical course Delayed union Dementia Vertebral collapse 

Notes

Acknowledgments

The authors thank Masami Tatsumi, Tomomi Tanaka, Tomoko Komaru, Aki Tanaka, Asami Satou, and Keiko Yoneda for their help in the collection of data and interviews with the patients. The authors also express their sincere thanks to the doctors from Osaka City General Hospital, Osaka City Juso Hospital, Osaka City Kita Hospital, Osaka City Sumiyoshi Hospital, Kousaiin Hospital, Hujiidera Municipal Hospital, Izumi Municipal Hospital, Aeba Surgical Hospital, Yodogawa Christian Hospital, Ishikiri Seiki Hospital, Asakayama Hospital, Osaka Ekisaikai Hospital, Kyouwa Hospital, Saiseikai Nakatsu Hospital, Saiseikai Senri Hospital, Baba Memorial Hospital, Seikeikai Hospital, Nagayoshi Sougou Hospital, Nishinomiya Watanabe Hospital, Hankai Hospital, Higashisumiyoshi Morimoto Hospital, Shitennoji Hospital, Satou Hospital, and Tsujigeka Hospital for enrolling the patients in this prospective study.

Compliance with ethical standards

The study design was preapproved by the Ethical Committee for Clinical Research at the respective institutes. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975 (in its most recently amended version). Informed consent was obtained from all patients included in the study.

Conflicts of interest

None.

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2017

Authors and Affiliations

  • Hiroyuki Yasuda
    • 1
    • 2
    Email author
  • Masatoshi Hoshino
    • 1
  • Tadao Tsujio
    • 3
  • Hidetomi Terai
    • 1
  • Takashi Namikawa
    • 4
  • Minori Kato
    • 4
  • Akira Matsumura
    • 4
  • Akinobu Suzuki
    • 1
  • Kazushi Takayama
    • 5
  • Shinji Takahashi
    • 1
  • Hiroaki Nakamura
    • 1
  1. 1.Department of Orthopaedic SurgeryOsaka City University Graduate School of MedicineOsakaJapan
  2. 2.Department of Orthopaedic SurgeryOsaka General Hospital of West Japan Railway CompanyOsakaJapan
  3. 3.Department of Orthopaedic SurgeryShiraniwa HospitalNaraJapan
  4. 4.Department of Orthopaedic SurgeryOsaka City General HospitalOsakaJapan
  5. 5.Department of Orthopaedic SurgerySeikeikai HospitalOsakaJapan

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