Anterior Knee Pain and Patellar Tendon Elasticity After Infrapatellar Tendon-Split Tibial Intramedullary Nailing
Relationship Between Anterior Knee Pain and Patellar Tendon Elasticity After Infrapatellar Tendon-Split Tibial Intramedullary Nailing: A Prospective Cohort Study Using Shear-Wave Ultrasound Elastography
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
詳細な説明
Anterior knee pain is a frequent complaint after tibial intramedullary nailing, but the role of patellar tendon biomechanical changes remains unclear. The infrapatellar tendon-split approach may lead to tendon healing, remodeling, and fibrosis, which could alter tendon elasticity and contribute to persistent pain and functional limitation. This study aims to prospectively investigate whether changes in patellar tendon elasticity are associated with anterior knee pain after infrapatellar tendon-split tibial intramedullary nailing.
This is a prospective, single-center, non-interventional observational cohort study. Adult patients aged 18 to 65 years with unilateral tibial shaft or metaphyseal fractures treated with standard infrapatellar tendon-split tibial intramedullary nailing will be enrolled consecutively after institutional ethics approval. Only patients enrolled after ethics approval will be included in the registered cohort.
Patellar tendon elasticity will be measured using shear-wave ultrasound elastography at four predefined time points: preoperatively, 6 weeks, 3 months, and 6 months postoperatively. Ultrasound assessments will be performed according to a standardized protocol by two independent radiologists, and inter-rater reliability will be assessed. Additional ultrasound parameters will include tendon thickness on B-mode imaging and Doppler neovascularization.
Clinical outcomes will include anterior knee pain assessed with a visual analog scale, patellofemoral function assessed with the Kujala Anterior Knee Pain Scale, tendon-related symptoms assessed with the VISA-P questionnaire, pressure pain sensitivity, and active knee range of motion. The primary objective is to determine whether change in patellar tendon elasticity is associated with anterior knee pain at 6 months. Secondary objectives are to examine associations between tendon elasticity and functional scores, range of motion, tendon thickness, Doppler findings, and inter-rater measurement reliability.
研究の種類
研究の種類
入学 (推定)
入学
連絡先と場所
研究場所
-
-
Istanbul
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Istanbul、Istanbul、トルコ(Türkiye)、34320
- Bagcilar Training and Research Hospital
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-
参加基準
適格基準
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
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- Age 18 to 65 years
- Unilateral tibial shaft or metaphyseal fracture
- Planned treatment with infrapatellar tendon-split tibial intramedullary nailing
- Ability to complete baseline and follow-up assessments
- Written informed consent
Exclusion Criteria:
- Previous surgery on the same knee
- Previous patellar tendon rupture or known patellar tendon disorder
- Active inflammatory rheumatologic disease
- Chronic systemic corticosteroid therapy or long-term immunosuppressive treatment
- Significant peripheral neuropathy or advanced diabetic neuropathy
- Bilateral tibial fracture
- Additional major lower-extremity injury or surgery affecting assessment
- Inability to comply with scheduled follow-up visits
研究計画
研究はどのように設計されていますか?
デザインの詳細
グループ/コホートの数
コホートと介入
グループ/コホートグループ/コホート |
介入・治療介入・治療 |
|---|---|
|
Infrapatellar Tendon-Split Tibial Nailing Cohort
Adult patients with unilateral tibial shaft or metaphyseal fractures treated with standard infrapatellar tendon-split tibial intramedullary nailing after ethics approval.
Participants will be followed prospectively with shear-wave ultrasound elastography and clinical assessments at baseline, 6 weeks, 3 months, and 6 months.
|
Standard-of-care tibial intramedullary nailing performed through an infrapatellar longitudinal patellar tendon split approach.
The procedure is not assigned by the protocol; only patients undergoing this routine surgical approach are observed.
Non-invasive shear-wave ultrasound elastography of the patellar tendon performed at predefined study visits using a standardized imaging protocol.
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この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in patellar tendon elasticity from baseline to 6 months
時間枠:Preoperative baseline and 6 months postoperatively
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Patellar tendon elasticity measured by shear-wave ultrasound elastography in kilopascals.
The primary analysis will assess the longitudinal change from baseline to 6 months.
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Preoperative baseline and 6 months postoperatively
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二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Change in patellar tendon elasticity from baseline to 3 months
時間枠:Preoperative baseline and 3 months postoperatively
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Change in patellar tendon elasticity measured by shear-wave ultrasound elastography.
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Preoperative baseline and 3 months postoperatively
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Anterior knee pain severity
時間枠:Baseline and postoperative 6 weeks, 3 months, and 6 months
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Anterior knee pain severity will be assessed using the Visual Analog Scale.
The Visual Analog Scale ranges from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain.
Higher scores indicate worse anterior knee pain.
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Baseline and postoperative 6 weeks, 3 months, and 6 months
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Patellofemoral function
時間枠:Preoperative baseline, 3 months, and 6 months
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Patellofemoral function will be assessed using the Kujala Anterior Knee Pain Scale.
The scale ranges from 0 to 100 points, with higher scores indicating better patellofemoral function and fewer anterior knee symptoms.
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Preoperative baseline, 3 months, and 6 months
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Patellar Tendon-Related Symptoms and Function
時間枠:Preoperative baseline, 3 months, and 6 months
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Patellar tendon-related symptoms and function will be assessed using the Victorian Institute of Sport Assessment-Patella questionnaire.
The questionnaire ranges from 0 to 100 points, with higher scores indicating fewer patellar tendon-related symptoms and better function
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Preoperative baseline, 3 months, and 6 months
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Active knee range of motion
時間枠:Preoperative baseline, 6 weeks, 3 months, and 6 months
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Active knee flexion and extension lag measured with a goniometer.
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Preoperative baseline, 6 weeks, 3 months, and 6 months
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Patellar tendon thickness
時間枠:Preoperative baseline, 6 weeks, 3 months, and 6 months
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Patellar tendon thickness measured on B-mode ultrasound.
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Preoperative baseline, 6 weeks, 3 months, and 6 months
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Doppler neovascularization
時間枠:Preoperative baseline, 6 weeks, 3 months, and 6 months
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Semiquantitative Doppler neovascularization score.
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Preoperative baseline, 6 weeks, 3 months, and 6 months
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Pressure Pain Sensitivity
時間枠:6 weeks, 3 months, and 6 months
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Pressure pain sensitivity will be assessed by recording pain intensity during a standardized pressure pain assessment using the Visual Analog Scale.
The Visual Analog Scale ranges from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain.
Higher scores indicate greater pressure pain sensitivity.
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6 weeks, 3 months, and 6 months
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Inter-rater reliability of shear-wave elastography measurements
時間枠:Baseline, 6 weeks, 3 months, and 6 months
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Agreement between two independent radiologists assessed using intraclass correlation coefficients.
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Baseline, 6 weeks, 3 months, and 6 months
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
その他の研究ID番号
- BEA-ORT-MYY-01
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
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