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Radiographic Cortical Thickness of the Humerus in Detecting Post-Stroke Regional Bone Loss

Post-stroke immobilization and reduced weight-bearing frequently lead to significant regional bone mineral density loss and asymmetry, particularly in the paretic upper extremity, which increases fracture risks. While Dual-Energy X-ray Absorptiometry (DXA) is the gold standard for evaluating systemic bone loss, it primarily focuses on axial or lower extremity sites and lacks universal accessibility. Since routine shoulder radiographs offer an opportunistic screening tool to evaluate regional bone quality without additional radiation , this study aims to compare proximal humerus cortical bone thickness between the paretic and non-paretic sides in stroke patients and assess its correlation with systemic DXA values to determine its clinical utility.

This cross-sectional, observational study involves a retrospective data analysis of patients aged 18 and older who experienced a single unilateral stroke at least 6 months prior and present with clinical hemiparesis. Eligible participants must have concurrent standard anteroposterior shoulder radiographs and DXA measurements available from their routine clinical follow-ups. Patient demographic data, stroke characteristics, Brunnstrom stages, and systemic DXA measurements (femoral neck and lumbar spine T-scores and bone mineral density values) are systematically recorded for analysis.

Cortical bone thickness measurements are performed using ImageJ software on standard radiographs at points 10 cm and 12 cm distal to the highest point of the humerus. To ensure reliability, measurements for both the paretic and non-paretic sides are conducted independently by two researchers who are completely blinded to the DXA results. Statistical analyses, including paired t-tests or Wilcoxon tests and Pearson or Spearman correlations, will be used to compare the sides and evaluate the relationship between radiographic cortical thickness and systemic bone density.

調査の概要

状態

募集

条件

詳細な説明

Background Post-stroke immobilization and reduced weight-bearing often lead to significant regional bone mineral density (BMD) loss and asymmetry, particularly in the paretic upper extremity, which increases fracture risks. While Dual-Energy X-ray Absorptiometry (DXA) is the gold standard for evaluating systemic bone loss, it primarily targets axial or lower extremity sites and may not be universally accessible in every clinical setting. Routine clinical imaging, such as standard shoulder radiographs, presents a valuable opportunistic screening tool to assess regional cortical bone quality without exposing patients to additional radiation.

Objective The primary objective of this cross-sectional, observational study is to compare proximal humerus cortical bone thickness between the paretic and non-paretic sides in patients with stroke. Additionally, the study aims to evaluate the correlation between radiographic cortical thickness measurements and systemic DXA values to determine the clinical utility of standard X-rays in identifying post-stroke regional bone loss.

Study Design and Methods This retrospective data analysis will include patients aged 18 and older with a history of a single unilateral stroke occurring at least 6 months prior, and presenting with clinical hemiparesis. Eligible participants must have concurrent standard anteroposterior shoulder radiographs and DXA measurements.

Measurement Protocol: Cortical bone thickness (CBT) will be measured at 10 cm and 12 cm distal to the highest point of the humerus using standard radiographs via ImageJ software.

Blinding: Measurements will be independently performed by two separate researchers who are completely blinded to the patients' DXA results.

Comparison: The radiographic cortical thickness values from both paretic and non-paretic sides will be correlated and compared against femoral neck and lumbar spine (L1-L4) DXA T-scores and BMD values.

研究の種類

観察的

入学 (推定)

65

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

研究場所

      • Istanbul、トルコ(Türkiye)
        • 募集
        • Istanbul Physical Medicine Rehabilitation Training and Research Hospital
        • コンタクト:

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人
  • 高齢者

健康ボランティアの受け入れ

いいえ

サンプリング方法

非確率サンプル

調査対象母集団

Adults aged 18 years and older recruited from the clinics of Istanbul Physical Medicine and Rehabilitation Training and Research Hospital. Participants will include hemiparetic individuals with a history of a single unilateral stroke occurring at least 6 months prior, who possess concurrent standard shoulder radiographs and systemic dual-energy X-ray absorptiometry measurements.

説明

Inclusion Criteria:

  • Patients aged 18 years and older.
  • A documented history of a single unilateral stroke that occurred at least 6 months prior to evaluation.
  • Presence of clinical hemiparesis.
  • Availability of concurrent standard anteroposterior (AP) shoulder radiographs taken within 6 months post-stroke alongside systemic DXA measurements.

Exclusion Criteria:

  • History of surgical intervention in either shoulder. History of a proximal humerus fracture.
  • Co-existing metabolic bone diseases, such as primary hyperparathyroidism or osteomalacia.
  • History of malignancy.
  • Documented history of corticosteroid use.
  • Imaging artifacts that compromise the accuracy of DXA measurements.
  • History of a secondary stroke.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

コホートと介入

グループ/コホート
Poststroke Hemiparetic Individuals
This observational, retrospective cohort consists of hemiparetic adult patients aged 18 years and older who experienced a single, unilateral stroke at least 6 months prior. Selected participants must have concurrent systemic DXA measurements and standard anteroposterior shoulder radiographs taken within 6 months post-stroke from routine clinical follow-ups.

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Difference in Proximal Humerus Cortical Bone Thickness Between Paretic and Non-Paretic Sides
時間枠:Baseline
The average cortical bone thickness measured in millimeters on standard anteroposterior shoulder radiographs. Measurements are taken at exact locations 10 cm and 12 cm distal to the highest anatomical peak of the humerus on both the paretic and non-paretic sides to evaluate localized bone loss asymmetry.
Baseline

二次結果の測定

結果測定
メジャーの説明
時間枠
Correlation Between Radiographic Cortical Bone Thickness and Systemic Bone Mineral Density
時間枠:Baseline
The correlation between the radiographic proximal humerus cortical thickness and systemic DXA values, specifically the bone mineral density (g/cm^2) of the femoral neck and the lumbar spine.
Baseline
Correlation Between Radiographic Cortical Bone Thickness and Systemic T-scores
時間枠:Baseline
The correlation between the humerus cortical thickness measurements and systemic DXA T-scores to determine the clinical utility of standard X-rays in reflecting systemic osteopenia or osteoporosis classifications.
Baseline

協力者と研究者

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スポンサー

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2026年2月22日

一次修了 (推定)

2026年6月25日

研究の完了 (推定)

2026年7月1日

試験登録日

最初に提出

2026年6月10日

QC基準を満たした最初の提出物

2026年6月12日

最初の投稿 (実際)

2026年6月16日

学習記録の更新

投稿された最後の更新 (実際)

2026年6月16日

QC基準を満たした最後の更新が送信されました

2026年6月12日

最終確認日

2026年6月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • IstanbulPMRTRH5

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未定

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いいえ

米国FDA規制機器製品の研究

いいえ

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