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Patricio R Andrades

Publications and source records attributed to Patricio R Andrades.

6 recordsLinked to original sources
PubMed2005

Geometric analysis of the V-Y advancement flap and its clinical applications.

BACKGROUND: Geometry is fundamental in the comprehension of local flap design. The purpose of this study was to discuss the differences between the V-Y advancement flap and other local flaps, understand its geometry, and analyze its clinical applications. METHODS: The analysis was based on qualitative measurements of an injury, taking into consideration the following dimensions: largest diameter, shortest diameter, and depth. Standardization of the flap design consisted of directing its advancement over the shortest diameter and making the V base match the size of the largest diameter. The flap was analyzed in two planes: the horizontal plane includes the V-Y design and the vertical plane includes the flap pedicle. The height of the flap can be obtained by simple trigonometry, taking into consideration the largest diameter and alpha angle in the horizontal plane. In the vertical plane, where the pedicle and pivot plane are positioned, for known shortest diameter and depth, the final depth of the pivot plane can be calculated using Pythagoras' principles. RESULTS: This analysis was applied to 25 patients with adequate skin coverage at follow-up. A correction factor was added to reduce the overdeepening of the vertical plane calculations. The final concepts for clinical application in the classic deep pedicle V-Y flap design are to calculate the length of the V by modifying the alpha angle and to move the pivot plane deeper to accomplish optimal flap movement. CONCLUSIONS: Using these principles, tension-free closure of the Y and appropriate advancement of the flap are obtained.

Humans↗
PubMed2004

Abdominoplasty: the use of polypropylene mesh to correct myoaponeurotic-layer deformity.

The aponeurotic layer is a very important element to consider during abdominoplasty. For most patients, a simple midline plication is enough to obtain good results. However, for in patients with severe aponeurotic laxity, some other maneuvers must be performed. The purpose of this study was to evaluate the use of polypropylene mesh in this group of patients. We analyzed the results for 20 patients in whom three types of mesh anchoring were used on the basis of intraoperative findings. Adequate long-term follow-up results were obtained, with no recurrence of rectus diastases, as shown by ultrasonography.

Abdominal Muscles↗
PubMed2004

SMAS graft of the nasolabial area during deep plane rhytidectomy.

The extensive list of treatments for the nasolabial area illustrates that the problem is not solved yet. Although a better understanding of the anatomy and physiology of the nasolabial area has been developed, the ideal treatment has not been found. It seems that a combined approach based on summation of partially effective modalities is the best option. The authors present their experience with combined deep plane rhytidectomy, malar fat lift, and superficial musculoaponeurotic system graft in the treatment of the aging nasolabial area. Results in 70 consecutive patients are presented with this simple, nonscarring, inexpensive technique.

Aged↗
PubMed2004

Nasal reconstruction with a forehead flap in children younger than 10 years of age.

Nasal reconstruction has been analyzed extensively in adults but not in children. The purpose of this article is to review the authors' experience with the forehead flap for nasal reconstruction in 10 children under the age of 10 during a 10-year period. Outcomes were assessed by an objective grading system for cosmetic surgical results. Subjective criteria were also applied by an assistant surgeon and by the patients' relatives. Appropriate results were obtained by the following principles: (1) A modified approach that considers three subunits consisting of the dorsum, tip, and ala was used; (2) a forehead flap is the best option for an entire subunit or a full-thickness defect repair; (3) the forehead flap design should be paramedian, oblique, and opposite to the major defect to avoid the hairline and allow better caudal advancement; (4) ear or costal cartilages are good options for structural support (the septum is a nasal growth center that should not be touched); (5) infundibular undermining of vestibular mucosa, turnover flaps, and skin grafts are good options for internal lining; (6) reconstruction is a three-stage procedure (an intermediate operation is added to thin the flap and perform secondary revisions for lining and support); (7) reconstruction should be completed before the child is school aged, to achieve good aesthetic results immediately and avoid psychosocial repercussions; and (8) the reconstructed nose, with skin, lining, and support, will grow with the child (no final surgery should be planned at the age of 18, other than revisions of late complications).

Child↗