4.6 Article

Compliance with wearing a thoracolumbar orthosis in nonoperative treatment of osteoporotic vertebral fractures: a prospective sensor-controlled study

Journal

SPINE JOURNAL
Volume 23, Issue 3, Pages 433-439

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.spinee.2022.11.009

Keywords

Brace; Orthotics; Osteoporotic fracture; Temperature-based sensor; Thoracolumbar orthosis; Vertebral fractures

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This study assessed the wearing time of hyperextension orthoses (HOs) for osteoporotic vertebral fractures (OVFs) using a hidden temperature-based sensor. The results showed poor overall compliance with wearing HOs and significant gender differences, but no association with age, body mass index, or pain level. Further research is needed to confirm the impact of wearing time on kyphotic progression and short-term clinical outcomes.
BACKGROUND CONTEXT: Hyperextension orthoses (HOs) for nonoperative treatment of oste-oporotic vertebral fractures (OVFs) are widely prescribed. However, the compliance, how much an HO is worn after it has been prescribed, is widely unknown.PURPOSE: This study was performed to assess the wearing time of HOs for OVFs in a prospec-tive blinded, sensor-controlled manner. STUDY DESIGN / SETTING: A prospective, single blinded observational study was performed.PATIENT SAMPLE: This study prospectively included 18 patients who were treated nonopera-tively with an HO for OVFs.OUTCOME MEASURES: The true wearing time was measured using a hidden temperature-based sensor. The patients were invited to return for regular follow-up every 2 weeks for 6 weeks, at which time clinical evaluation (including a visual analog scale for pain and the Oswestry disabil-ity questionnaire) and radiographs of the spine were performed.METHODS: Full compliance was defined as a wearing time of 15 hours per day. Correlation between compliance and demographic differences, patient reported outcomes and radiographic changes of the vertebral structures were calculated.RESULTS: The mean HO wearing time was 5.5 +/- 3.3 hours (37%+/- 22% compliance). Female patients used the HO significantly longer per day than did male patients (6.5 +/- 3.2 vs 2.9 +/- 2.0 hours, p=.039). Age and body mass index had no influence on wearing behavior. CONCLUSIONS: Overall, compliance with wearing HOs is poor and shows great variability with significant gender-dependency but not associated with BMI, age, or pain-level. Further studies are required to confirm our results that the wearing time does not have an influence on kyphotic pro-gression of the osteoporotic fractured segment, nor on clinical outcome at short term.LEVEL OF EVIDENCE: I (c) 2022 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)

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