Structural Fat Grafting for Craniofacial Trauma: Repeat Fat Grafting Injection-5 Subject Cohort

Adipose Tissue Clinical Trial

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Official title:

Structural Fat Grafting for Craniofacial Trauma: Repeat Fat Grafting Injection-5 Subject Cohort

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01822301
• Other study ID #: PRO12100585
• Status: Completed
• Phase: N/A
• First received: March 19, 2013
• Last updated: May 10, 2017
• Start date: April 2013
• Est. completion date: May 2015

Study information

• Verified date: May 2017
• Source: University of Pittsburgh
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Fat grafting represents a technique with great potential to improve outcomes in minimally invasive facial reconstruction. Fat grafting has already been demonstrated as a safe and minimally invasive technique over decades of widespread practice in plastic surgery. In our current study of fat grafting for facial deformities (IRB# PRO09060101), we have treated 9 subjects without adverse event and all have had a significant improvement. Since all methods of treatment and evaluation are the same in this study, we will be able to use the data in our prior study as additional control data.

We hypothesize that repeating the fat grafting in subjects with previous facial fat grafts will enable successful restoration of tissue volume and craniofacial form. Additionally, we hypothesize that the results will be durable and subject quality of life improved.

Five (5) subjects (who were previously enrolled into IRB# PRO09060101) will be enrolled to this single center University of Pittsburgh site research study.

Description:

Facial trauma injuries, especially those sustained in military combat and severe automobile crashes, are characterized by destruction of bone and soft tissue anatomy. While the bony skeleton can often be reconstructed, the overlying soft tissue is difficult to restore.

Importantly, it is the structure of the soft tissue that imparts the normal human form, and adequate reconstruction of soft tissue defects allows trauma victims to reintegrate into society. Accepted procedures for soft tissue reconstruction of the face involve tissue flap reconstruction procedures and autologous fat grafting. Tissue flap operations are extensive, often including microvascular surgery, and do not precisely correct the deformities. Fat grafting is a less invasive technique that allows for more precise shaping of the reconstructed tissues. However, autologous fat grafts may undergo resorption that can affect the appearance of the reconstruction over time. The degree of change in appearance after fat grafting has not been well studied for facial trauma patients.

We hypothesize that subjects who have successfully completed participation in the study (PRO09060101) and experienced graft resorbtion will have improved outcomes with an additional fat graft treatment. We anticipate that additional fat graft treatment will fully restore the facial features and overcome fat loss from the initial fat graft treatment. Additionally, we hypothesize that the cellular properties of the fat precursor cells (preadipocytes) may correlate with fat graft retention

Recruitment information / eligibility

• Status: Completed
• Enrollment: 5
• Est. completion date: May 2015
• Est. primary completion date: May 2015
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Aged 18 years or older and able to provide informed consent

2. Have suffered injury resulting in craniofacial volume defects which could be treated with a graft volume of between 5 and 150 cc of lipoaspirate

3. Be at least 3 months post-injury or post-surgery (from trauma procedures) so that acute edema is resolved

4. Volume defects are covered by intact skin and do not communicate with oral cavity or sinuses

5. The three dimensional geometry of the volume defects would allow for treatment with lipoaspirate injection that in a manner that at least two distinct treated areas could be discerned on gross examination and radiographically (e.g. treated regions are on opposite sides of the face, on lower face versus upper face, or separated by a bony landmark such as zygoma. This would include the ability to treat an uninjured contralateral region with lipaspirate in order to obtain symmetry.

6. Willing and able to comply with follow up examinations, including radiographic studies

7. Have completed participation in IRB# PRO09060101.

Exclusion Criteria:

1. Age less than 18 years

2. Inability to provide informed consent

3. Craniofacial defects intended for treatment have open wounds or communicate with oral cavity or sinus (note: presence of such a defect in the setting of another defect(s) that meets treatment criteria will not exclude the patient from participating).

4. Active infection anywhere in the body

5. Diagnosed with cancer within the last 12 months and /or presently receiving chemotherapy or radiation treatment

6. Known coagulopathy

7. Systemic disease that would render the fat harvest and injection procedure, along with associated anesthesia, unsafe to the patient.

8. Pregnancy

9. Subjects with Schizophrenia, Bipolar Disorder. (Subjects who are found to be stable on medication and receive psychiatric clearance could be eligible for study participation per the Physician's discretion.)

Related Conditions & MeSH terms

• Adipose Tissue
• Facial Injuries

Intervention

Procedure:
• Repeat Fat grafting
Fat grafting is a minimally invasive clinical procedure that has been widely used by plastic surgeons within reconstructive surgery for many years. Fat grafting is considered a standard of care procedure in plastic surgery. In brief, fat tissue to be used for grafting is harvested (usually from abdomen or thighs) with a small liposuction cannula in the operating room. The fat tissue is then sterilely centrifuged and allowed to decant before separating the fluid and oil layers from the fat tissue fraction. The aspirated fat is then loaded into 1cc syringes and injected into the facial deformity using specialized injection cannulas. In this study, we will treat 5 subjects from protocol (IRB # PRO09060101) with an additional fat graft treatment to assess whether this will increase fat graft retention over time. Additionally, data from our current study assessing volume retention after fat grafting for facial deformities (IRB # PRO09060101) with be used for comparison.

Locations

Country	Name	City	State
United States	Unversity of Pittsburgh	Pittsburgh	Pennsylvania

Sponsors (2)

Lead Sponsor	Collaborator
University of Pittsburgh	United States Department of Defense

Country where clinical trial is conducted

United States, 

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* Note: There are 48 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Facial Volume Score	the facial volume and appearance grading scale evaluates each aesthetic region in the face based on both physical examination and 3D photography by the clinician. scale ranges from 1-3 where a score of 1 indicates an obvious contour defect; 2 shows a noticeable improvement in contour but not sufficient to impart a normal appearance; 3 represents a normal appearance and/or close approximation with a normal uninjured contralateral structure.	assessed at baseline (pre-op), days 7-21 post-op, 3 months post-op, and 9 months post-op
Secondary	Serial Computed Tomography Imaging	serial computed tomography images were collected to evaluate the volume of the defect	assessed at 7-21 days, 3 months and 9 months post op.