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Completed

NCT Number: NCT02609074

Pilot Clinical Trial of CPC/rhBMP-2 Microffolds as Bone Substitute for Bone Regeneration

Objective: The investigators initiated a pilot clinical study to test safety and preliminary efficacy in humans (bone tissue repairing capacity) and to evaluate standard clinical and rehabilitation protocols.

Summary Background Data: Bone tissue engineering scaffolds loading growth factors have been considered as the most perspective among all bone substitutes, yet little progress of its clinical translation has been made. The concept of "micro-scaffolds" was proposed in this study to provide a trajectory to its clinical translation.

Methods: Pre-cured CPC/rhBMP-2 micro-scaffolds have been successfully developed and further applied as an easy-to-operate filler for bone regeneration in a pilot clinical study. Patients of tibial plateau fractures, proximal humeral fractures, or calcaneal fractures at a similar level of severity were randomly divided into two groups and treated by CPC/rhBMP-2 microffolds or traditional CPC paste (control group).

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Key information

Conditions

Bone Fracture Fractures, Bone Wounds and Injuries

Age range

16 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

About this study

Objective: The investigators initiated a pilot clinical study to test safety and preliminary efficacy in humans (bone tissue repairing capacity) and to evaluate standard clinical and rehabilitation protocols.

Summary Background Data: Bone tissue engineering scaffolds loading growth factors have been considered as the most perspective among all bone substitutes, yet little progress of its clinical translation has been made. The concept of "micro-scaffolds" was proposed in this study to provide a trajectory to its clinical translation.

Methods: Pre-cured CPC/rhBMP-2 micro-scaffolds have been successfully developed and further applied as an easy-to-operate filler for bone regeneration in a pilot clinical study. Patients of tibial plateau fractures, proximal humeral fractures, or calcaneal fractures at a similar level of severity were randomly divided into two groups and treated by CPC/rhBMP-2 microffolds or traditional CPC paste (control group).

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 16~70 years.
  • Tibial plateau fractures, proximal humeral fractures, or calcaneal fractures at a similar level of severity.
  • An understanding of the rehabilitation protocol and willing to follow it.
  • An agreement to postoperative visits and tests.
  • Signed an informed subject consent form.

Exclusion criteria

-

Treatment and study plan

Minimally invasive internal fixation surgeries

Procedure

CPC/rhBMP-2 micro-scaffolds

Device

CPC paste

Device

Primary outcomes

  1. X-ray

    Time frame: Pre-operation; 1, 2, 3, 4, 6, 8, 12, 18 and 24 months post-operation.

    X-ray radiography at different time intervals after implantation was employed to observe the osseointegration of the implanted microffolds to host bone and the degradation of the material.

  2. Clinical examination

    Time frame: 1 week post-operation

    The assessment was based on clinical examination. After the CPC implantation, all patients were observed according to the following indexes: allergic or toxic reactions, rash or high fever.

Secondary outcomes

  1. Function scoring - IOWA knee score

    Time frame: 1, 2, 3, 4, 6, 8 and 12 months post-operation.

    The functional recovery was recorded at each follow-up time point using IOWA knee score in cases of tibial plateau fractures. The IOWA knee score is a questionnaire and clinical-examination-based evaluation of the function of the knee. The knee score is a five- category measurement, which includes activities of daily living, freedom from pain, gait, aid dependence, deformity and range of movement. The scores are grouped into excellent (90 to 100), good (80 to 89), fair (70 to 79) and poor (under 70) categories.

  2. Function scoring - IOWA ankle score

    Time frame: 1, 2, 3, 4, 6, 8 and 12 months post-operation.

    The functional recovery was recorded at each follow-up time point using IOWA ankle score in cases of calcaneal fractures. The IOWA ankle score is a questionnaire and clinical-examination-based evaluation of the function of the ankle. The ankle score is a four-category measurement of function, freedom from pain, gait and range of movement. The scores are grouped into excellent (90 to 100), good (80 to 89), fair (70 to 79) and poor (under 70) categories.

  3. Function scoring - NEER shoulder score

    Time frame: 1, 2, 3, 4, 6, 8 and 12 months post-operation.

    The functional recovery was recorded at each follow-up time point using Neer shoulder score in cases of proximal humeral fractures. Neer shoulder score has three parts: scoring of pain during the previous week by patients (verbal rating scale); clinical testing of function (muscle strength, reaching ability, and stability) and active range of motion; and an anatomical or radiological evaluation. The scores are grouped into excellent (90 to 100), good (80 to 89), fair (70 to 79) and poor (under 70) categories.

Sponsors and collaborators

Lead sponsor

East China University of Science and Technology

Other

Collaborators

  • Shanghai 6th People's Hospital
  • Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University
  • Shanghai Zhongshan Hospital

Registry information

Important dates

Study start
2013
Primary completion
2015
Study completion
2015
First posted
Nov 20, 2015
Registry last updated
Nov 20, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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