for people ages 18-85 (full criteria)
Healthy Volunteers
healthy people welcome
at Irvine, California
study started
estimated completion
Principal Investigator
by Natasha Mesinkovska, MD, PhD



Non-invasive treatment options such as focused ultrasound has been used with success for the treatment of skin laxity in various parts of the body including the face, neck, décolletage, arms, buttocks, thighs, and legs. With the increasing demand for greater results, researchers have started combining modalities together such as focused ultrasound and intradermal filler, with promising effects for skin laxity and volume restoration. This study aims to elucidate the efficacy and added benefits of a combination therapy using focused ultrasound (Ulthera) and calcium hydroxylapatite (Radiesse) for the treatment of skin laxity and volume restoration of the lower thighs, specifically the lower anterior third of the thigh.

Official Title

Combined Focused Ultrasound and Calcium Hydroxylapatitie Filler for Skin Laxity


Skin Laxity, Cutis Laxa, Calcium, calcium hydroxylapatite (Radiesse) and IFUS (Ulthera)


You can join if…

Open to people ages 18-85

  1. Exhibit skin aging and laxity that will benefit from treatment as determined by the investigator/physician.
  2. Subjects between the ages of 18-85 years old, at the time of consent.
  3. Subjects may be male or female.
  4. Subjects can be of any Fitzpatrick Skin type (I-VI).
  5. Subjects must be able and willing to give written informed consent and to comply with the requirements of this protocol. The consent form has been standardized in English. For those patients who do not read and understand English, a consent form will be standardized and provided in a language that they read and understand.

You CAN'T join if...

  1. Children and adolescents (less than 18 years old).
  2. Subjects who are not willing or able to provide written consent.
  3. Individuals with any significant medical history including skin disorders and eating disorders as determined by the investigator/physician.
  4. Subjects on any substances affecting blood coagulation (including but not limited to aspirin and other non-steroid anti-inflammatory drugs, warfarin, vitamin E, fish oil, heparin, low-molecular weight heparin, novel anti-coagulants).
  5. Subjects with known blood coagulopathies.
  6. Subjects with a compromise of local blood supply (including but not limited to recent surgery, severe scarring, autoimmune diseases involving the lower thigh such as lupus, morphea, sarcoid or mixed connective tissue disease).
  7. Subjects who have received any treatment for skin laxity or liposuction in the last 12 weeks.
  8. Subjects who have experienced an increase or decrease in body weight of more than 10% in the past 24 weeks.
  9. Subjects who have a known hypersensitivity reaction to calcium hydroxylapatite or the components of the filler product.
  10. . Subjects with open wounds in the area of ultrasound treatment.
  11. . Subjects with pacemakers and/or electronic device implants in the area of ultrasound treatment.
  12. . Female patients who are planning a pregnancy, currently pregnant or nursing.


  • University of California, Irvine Dermatology Clinical Research Center
    Irvine California 92697 United States

Lead Scientist at UC Irvine

  • Natasha Mesinkovska, MD, PhD
    Associate Clinical Professor, Dermatology, School of Medicine. Authored (or co-authored) 121 research publications


in progress, not accepting new patients
Start Date
Completion Date
University of California, Irvine
Phase 1 Skin Laxity Research Study
Study Type
About 20 people participating
Last Updated