Plastic Surgery Commons^™

Finite Element Simulation And Additive Manufacturing Of Stiffness-Matched Niti Fixation Hardware For Mandibular Reconstruction Surgery, Ahmadreza Jahadakbar, Narges Shayesteh Moghaddam, Amirhesam Amerinatanzi, David Dean, Haluk E. Karaca, Mohammad Elahinia

Mechanical Engineering Faculty Publications

Process parameters and post-processing heat treatment techniques have been developed to produce both shape memory and superelastic NiTi using Additive Manufacturing. By introducing engineered porosity, the stiffness of NiTi can be tuned to the level closely matching cortical bone. Using additively manufactured porous superelastic NiTi, we have proposed the use of patient-specific, stiffness-matched fixation hardware, for mandible skeletal reconstructive surgery. Currently, Ti-6Al-4V is the most commonly used material for skeletal fixation devices. Although this material offers more than sufficient strength for immobilization during the bone healing process, the high stiffness of Ti-6Al-4V implants can cause stress shielding. In this paper, …

Optimal Timing Of Free Flap Breast Reconstruction In A Highly Radiated Population, W. Mohiuddin, Kamini D. Patel, Steven E. Copit, Md, Patrick J. Greaney, Md, Facs

Department of Surgery Posters

Introduction

There has been an increasing use of postmastectomy radiation therapy (PMRT) in breast cancer patients, especially in cases of large tumors (T3 or greater) or node-positive disease (N1 or greater).1 When radiation for the treatment of breast cancer is expected, tissue-based breast reconstruction is generally preferred to implant-based reconstruction. This distinction is attributed to the high rate of complications with postoperative radiation after implant-based reconstruction, ranging from 20% to 70%.2

In cases when the need for radiation is likely, breast reconstruction with autologous tissue is typically deferred until the completion of the radiation therapy. Reasons for deferring include avoiding …

Versatility Of The Anterolateral Thigh Flap: An Akuh Experience, Fazlur Rahman, Muhammad Asif Ahsan, Muhammad Ubaid Khan, Sami Ullah, Sara Khan

Department of Surgery

Abstract

Anterolateral thigh flap is used for reconstruction of various soft tissue defects. We planned the study to evaluate the versatility of the anterolateral thigh flap as it may be used for reconstruction of head and neck, torso and extremities with minimal donor-site morbidity. The retrospective study was conducted at Aga Khan University Hospital, Karachi, and comprised date from October 2012 to December 2015. Of the 75 patients in which anterolateral thigh flap was used for reconstruction, 6(8%) flaps did not survive. The overall flap survival was 69(92%). Anterolateral thigh flap was versatile enough to provide soft tissue coverage to …

Perception Of Differences In Lip Profile Between 2-D And 3-D, Andrew Hansen

Theses and Dissertations

Past studies evaluating the esthetics of orthodontic treatment have been done using 2-D images. New 3-D imaging offers an improved, real-life representation of a subject. The purpose of this study was to determine how laypeople perceived differences in lip position (flat versus ideal lip fullness) in 2-D compared to 3-D.

3dMD images of 8 Caucasian subjects were adjusted to an ideal and flat lip position in 3-D and then in 2-D from the profile view. 2 surveys were created with paired ideal and flat images on the screen, either in 2-D or 3-D, and evaluators were asked to choose which …

The Role Of Fat Grafting And Adipose-Derived Stem Cells In Breast Reconstruction, Krishna S. Vyas

Theses and Dissertations--Clinical and Translational Science

Fat grafting is a common surgical procedure that involves the transfer of fat from one area of the body to another in order to improve contour deformities, such as in breast reconstruction. Advantages of the technique include using autologous tissue rather than a foreign body and the added benefit of having liposuction to remove fat from an undesirable location. Although adipose tissue could be the ideal soft tissue filler, fat grafting is plagued by tremendous variability in long-term retention, with volume survival rates of 20-80%, resulting in suboptimal outcomes and repetitive procedures.

The mechanisms contributing to long-term fat graft survival …