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Press-Fit vs Loose-Fit Radial Head Arthroplasty (PROFIT)

2026年11月9日 更新者：AdventHealth

Outcomes of Press-Fit vs Loose-Fit Radial Head Implants: A Prospective Single-Blinded Randomized Control Trial With a Minimum Follow-Up of 2 Years

This study compares two types of artificial implants used to replace a broken part of the elbow (the radial head) when the bone is too damaged to repair. One implant (press-fit) is designed to grip the bone tightly so bone grows into it and holds it in place. The other implant (loose-fit) has a smooth stem that sits loosely in the bone and is meant to move slightly. Both implants are already approved and widely used; doctors do not yet know if one works better than the other. People taking part are placed by chance into one of the two implant groups. The study will follow them for at least 2 years to see how far they can bend and straighten the elbow, how much pain they have, how well the elbow works in daily life, whether the implant stays in good position on X-rays, and whether any further surgery is needed.

研究概览

地位

招聘中

条件

干预/治疗

研究类型

介入性

注册 (估计的)

130

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习地点

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 及以上 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

描述

Inclusion Criteria:

  1. Age 18 years or older.
  2. Scheduled for primary RHA.
  3. Willing and able to provide written informed consent.
  4. Willing and able to comply with post-operative follow-up visits at 3 months, 6 months, 1 year, and 2 years.
  5. No concurrent elbow procedures such as ligament reconstruction or additional joint resurfacing at the time of RHA.
  6. No prior history of revision RHA.
  7. RHA to be performed using press-fit or loose-fit implants (no other fixation methods included).
  8. Must be able to complete PROs independently.

Exclusion Criteria:

  1. Diagnosed with any significant comorbidities that could interfere with rehabilitation or study participation, including but not limited to:

    • Severe osteoarthritis affecting elbow function
    • Rheumatoid arthritis or other autoimmune disorders affecting musculoskeletal function
    • Full-thickness cartilage lesion in the elbow joint
    • Neurological or vascular complications
    • Neuromuscular disorders affecting movement or coordination
    • Neurocognitive conditions impacting study participation
    • Chronic infections or immunodeficiency conditions
    • Uncontrolled diabetes
    • Cardiovascular diseases (e.g., congestive heart failure, ischemic heart disease)
    • Severe chronic obstructive pulmonary disease (COPD) or other significant respiratory conditions
    • Renal insufficiency or chronic kidney disease (stage 3 or higher)
    • Obesity with a body mass index (BMI) > 40
    • Active cancer treatment or history of cancer within the past 5 years

  2. Known allergy or contraindication to any surgical materials used in the radial head implant procedure.

  3. Patients currently participating in another clinical trial that may interfere with this study's outcomes.

  4. Risk factors for poor implant integration and healing, including:

    • Active alcohol or substance dependence
    • Nicotine/tobacco use
    • Chronic corticosteroid use
    • Recent chemotherapy

  5. Any condition that, in the opinion of the principal investigator, would make participation in the study unsafe or not in the patient's best interest.

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：治疗
  • 分配：随机化
  • 介入模型：并行分配
  • 屏蔽：单身的

武器和干预

参与者组/臂
干预/治疗
实验性的：Press-Fit Radial Head Arthroplasty

Patients undergoing primary RHA with a press-fit (grit-blasted or porous-coated, ingrowth-dependent) radial head implant - Skeletal Dynamics radial head prosthesis.
设备：Skeletal Dynamics Radial Head (Press-Fit)

Skeletal Dynamics Radial Head (Press-Fit). Surgical placement of a press-fit radial head prosthesis sized for interference fit within the radial canal.
有源比较器：Loose-Fit Radial Head Arthroplasty

Patients undergoing primary RHA with a loose-fit (smooth-stem spacer) radial head implant - Stryker radial head prosthesis.
设备：Stryker Radial Head (Loose-Fit).

Surgical placement of a smooth-stem radial head prosthesis functioning as a spacer permitting rotation and micromotion.

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Elbow Flexion-Extension Arc of Motion
大体时间：Baseline, 3 months, 6 months, 12 months, and 24 months postoperatively

Total arc of elbow flexion-extension in degrees (maximum flexion minus loss of extension), measured with a goniometer. The primary comparison between groups is at 24 months postoperatively. Measurements at earlier time points are reported to describe recovery over time.
Baseline, 3 months, 6 months, 12 months, and 24 months postoperatively

次要结果测量

结果测量
措施说明
大体时间
Forearm Rotation Arc of Motion
大体时间：Baseline, 3, 6, 12, and 24 months postoperatively

Total arc of forearm rotation in degrees (maximum pronation plus maximum supination), measured with a goniometer.
Baseline, 3, 6, 12, and 24 months postoperatively
Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) Score
大体时间：Baseline (preoperative), 3, 6, 12, and 24 months postoperatively

The QuickDASH is an 11-item patient-reported questionnaire assessing upper extremity function and symptoms. Scores range from 0 to 100, and higher scores indicate greater disability (worse outcome).
Baseline (preoperative), 3, 6, 12, and 24 months postoperatively
Mayo Elbow Performance Score (MEPS)
大体时间：Baseline (preoperative), 3, 6, 12, and 24 months postoperatively

The MEPS assesses elbow pain, range of motion, stability, and ability to perform daily activities. Scores range from 0 to 100, and higher scores indicate better elbow function (better outcome).
Baseline (preoperative), 3, 6, 12, and 24 months postoperatively
Visual Analog Scale (VAS) for Pain
大体时间：Baseline, 3, 6, 12, and 24 months postoperatively

Participants mark their pain intensity on a continuous line scored from 0 (no pain) to 10 (worst imaginable pain). Higher scores indicate worse pain.
Baseline, 3, 6, 12, and 24 months postoperatively
Number of Participants Receiving Corticosteroid Injections
大体时间：Through 24 months postoperatively

Number of participants who receive one or more corticosteroid injections to the operative elbow after radial head arthroplasty.
Through 24 months postoperatively
Number of Participants Requiring Reoperation
大体时间：Through 24 months postoperatively

Number of participants who undergo any secondary surgical procedure on the operative elbow after the index radial head arthroplasty, including stiffness release and implant removal.
Through 24 months postoperatively
Number of Participants With Radiographic Implant Loosening
大体时间：Through 24 months postoperatively

Intramedullary stem loosening on standard elbow radiographs.
Through 24 months postoperatively
Number of Participants With Radiographic Implant Subsidence
大体时间：Through 24 months postoperatively

Implant subsidence on standard elbow radiographs compared with immediate postoperative radiographs.
Through 24 months postoperatively
Number of Participants With Radial Neck Resorption
大体时间：Through 24 months postoperatively

Radial neck bone resorption (stress shielding) on standard elbow radiographs.
Through 24 months postoperatively
Number of Participants With Heterotopic Ossification
大体时间：Through 24 months postoperatively

Heterotopic ossification on standard elbow radiographs.
Through 24 months postoperatively
Number of Participants With Surgical or Implant-Related Complications
大体时间：Through 24 months postoperatively

Number of participants with one or more complications related to the surgery or implant, including implant loosening, infection, stiffness, nerve injury, instability, or implant failure.
Through 24 months postoperatively
Grip Strength
大体时间：3, 6, 12, and 24 months postoperatively

Maximum grip strength of the operative hand in kilograms, measured with a hand-held dynamometer.
3, 6, 12, and 24 months postoperatively

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

AdventHealth

合作者

Hospital Universitario La Paz

调查人员

  • 首席研究员：Amir Kachooei, MD PhD、Rothman Orthopedics at AdventHealth

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2026年1月16日

初级完成 (估计的)

2031年9月1日

研究完成 (估计的)

2031年9月1日

研究注册日期

首次提交

2026年10月29日

首先提交符合 QC 标准的

2026年11月9日

首次发布 (实际的)

2026年11月12日

研究记录更新

最后更新发布 (实际的)

2026年11月12日

上次提交的符合 QC 标准的更新

2026年11月9日

最后验证

2026年8月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • 2292000

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

是的

在美国制造并从美国出口的产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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