ClinicalTrials.gg
CompletedNCT00831610Updated May 28, 2012

Post-bariatric Abdominoplasty: Skin Sensation Evaluation

An interventional study of Bariatric surgery (Roux-en-Y Gastric Bypass) + Post-bariatric abdominoplasty. and Roux-en-Y gastric bypass (bariatric surgery) + Post-bariatric abdominoplasty (without flap undermining) in Obesity and Hypesthesia, sponsored by Federal University of São Paulo. Completed at 1 site in Brazil. Open to female participants aged 25 Years to 55 Years. Per ClinicalTrials.gov, last updated 2012-05-28.

Sponsored by Federal University of São Paulo · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
100
Allocation
Non-randomized
Ages
25 Years to 55 Years
Sex
Female
01

Study summary

The purpose of this study is to quantify the skin sensation of the anterior abdominal wall of the post-bariatric patients submitted to anchor-line abdominoplasty without flap undermining.

Additional purposes were: quantify topographically the abdominal skin sensation of the Normal weight, Morbid Obese and Former Morbid Obese after bariatric surgery (before and after the abdominoplasty - excess skin surgical removal without flap undermining -> Anchor Line Abdominoplasty).

Read the detailed description

Abdominoplasty performed in post-bariatric patients presents more post-operative complications than in non post-bariatric patients. Surgical techniques that provokes less complications are required.

Anchor-line abdominoplasty is a technique published in the years 1950 as well the first bariatric proceedings. Abdominoplasty without flap undermining is feasible in pendular abdominal wall of the former morbidly obese women with scarred abdomen.

Classical abdominoplasty (with flap undermining) is known to impair significantly the skin sensation. Post-bariatric abdominoplasty without flap undermining keeps the skin sensation unaltered since the early post-operative period.

Now that the post-bariatric anchor-line abdominoplasty improves the abdominal wall contour by removing the exceeding, pendular and striated skin saving the perforant skin sensory nerves. Could this technique improve the skin sensation of the anterior abdominal wall of the post-bariatric patients?

02

Conditions studied

  • Obesity
  • Hypesthesia

Keywords

  • bariatric surgery
  • plastic surgery
  • abdominal wall
  • skin
  • sensation
  • abdominoplasty
03

In context

Obesity

11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.

This study's enrollment of 100 is above the median of 67 across 9,006 interventional studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

Federal University of São Paulo is the lead sponsor of 439 studies on the registry; 23 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
25 Years to 55 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Former morbidly obese women with superior of 40kg/m2.
  • Post-bariatric surgery: Roux en Y gastric bypass.
  • Clinical conditions to perform a plastic surgery.

Exclusion criteria

Exclusion Criteria:

  • Diabetes.
  • Peripheral neuropathy.
  • Deny to sign the Term.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
100 participants (actual)

Study arms

  • Other
    STUDY

    1. Female healthy volunteers (25 to 55 years old) with normal weight. 2. Morbid Obese women waiting for bariatric surgery. 3. Post-bariatric female patients, 25 to 55 years old, MORE than 12 months of weight stability, pendular abdominal wall, clinical conditions to anchor-line abdominoplasty without flap undermining. Skin Evaluation before the abdominoplasty. 4. Group 3, submitted to anchor-line abdominoplasty without flap undermining.

    Procedure: Bariatric surgery (Roux-en-Y Gastric Bypass) + Post-bariatric abdominoplasty. · Procedure: Roux-en-Y gastric bypass (bariatric surgery) + Post-bariatric abdominoplasty (without flap undermining)

  • Other
    CONTROL

    Group 3: Post-bariatric female patients, 25 to 55 years old, LESS than 12 months of weight stability, pendular abdominal wall, clinical conditions to anchor-line abdominoplasty without flap undermining. Who will be submitted to abdominoplasty after the study period.

    Procedure: Roux-en-Y gastric bypass (bariatric surgery) + Post-bariatric abdominoplasty (without flap undermining)

Interventions

  • ProcedureBariatric surgery (Roux-en-Y Gastric Bypass) + Post-bariatric abdominoplasty.

    Surgical removal of the exceeding skin and adiposity of the abdominal wall by one midline vertical fuse and one supra-pubic horizontal fuse. Skin suture without flap undermining and with low tension.

    Also known as: Anchor-line abdominoplasty, Abdominoplasty, Post-bariatric plastic surgery

  • ProcedureRoux-en-Y gastric bypass (bariatric surgery) + Post-bariatric abdominoplasty (without flap undermining)

    Bariatric surgery Plastic surgery Abdominoplasty

06

What researchers measure

Primary outcomes

  1. Innocuous static tactile sensation in grams per square millimeters (g/mm2) by nylon monofilaments aesthesiometer.

    Time frame: Day before the surgical intervention and 6th month after for Study group.

07

Study locations

1 site
  • Federal Universtiy of São Paulo
    São Paulo, 04023-002, Brazil
08

References and documents

Publications

  • Bussolaro RA, Garcia EB, Barbosa MV, Omonte IR, Huijsmans JP, Bariani RL, Ferreira LM. Post-bariatric abdominoplasty: skin sensation evaluation. Obes Surg. 2010 Jul;20(7):855-60. doi: 10.1007/s11695-008-9747-9. Epub 2008 Nov 4. PubMed 18982397 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 28, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00831610
Responsible party
Rodolpho Alberto Bussolaro, MD. PhD. (Doctor, Federal University of São Paulo) — Principal investigator
First posted
Jan 29, 2009
Start date
Aug 2006
Primary completion
Oct 2008
Completion
Dec 2010
Last update
May 28, 2012

Study contacts

Rodolpho A Bussolaro, PhD fellow
principal investigator · Federal University of São Paulo
Elvio B Garcia, Professor
study chair · Federal University of São Paulo
Lydia M Ferreira, Chairwoman
study director · Federal Universtity of São Paulo

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in May 2012. You cannot join it, but the record below documents what was studied.

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