Recovery of facial expressions using functional electrical stimulation after full-face transplantation.

BACKGROUND: We assessed the recovery of 2 face transplantation patients with measures of complexity during neuromuscular rehabilitation. Cognitive rehabilitation methods and functional electrical stimulation were used to improve facial emotional expressions of full-face transplantation patients for 5 months. Rehabilitation and analyses were conducted at approximately 3 years after full facial transplantation in the patient group. We report complexity analysis of surface electromyography signals of these two patients in comparison to the results of 10 healthy individuals. METHODS: Facial surface electromyography data were collected during 6 basic emotional expressions and 4 primary facial movements from 2 full-face transplantation patients and 10 healthy individuals to determine a strategy of functional electrical stimulation and understand the mechanisms of rehabilitation. A new personalized rehabilitation technique was developed using the wavelet packet method. Rehabilitation sessions were applied twice a month for 5 months. Subsequently, motor and functional progress was assessed by comparing the fuzzy entropy of surface electromyography data against the results obtained from patients before rehabilitation and the mean results obtained from 10 healthy subjects. RESULTS: At the end of personalized rehabilitation, the patient group showed improvements in their facial symmetry and their ability to perform basic facial expressions and primary facial movements. Similarity in the pattern of fuzzy entropy for facial expressions between the patient group and healthy individuals increased. Synkinesis was detected during primary facial movements in the patient group, and one patient showed synkinesis during the happiness expression. Synkinesis in the lower face region of one of the patients was eliminated for the lid tightening movement. CONCLUSIONS: The recovery of emotional expressions after personalized rehabilitation was satisfactory to the patients. The assessment with complexity analysis of sEMG data can be used for developing new neurorehabilitation techniques and detecting synkinesis after full-face transplantation.

Image-based Analysis of Emotional Facial Expressions in Full Face Transplants.

In this study, it is aimed to determine the degree of the development in emotional expression of full face transplant patients from photographs. Hence, a rehabilitation process can be planned according to the determination of degrees as a later work. As envisaged, in full face transplant cases, the determination of expressions can be confused or cannot be achieved as the healthy control group. In order to perform image-based analysis, a control group consist of 9 healthy males and 2 full-face transplant patients participated in the study. Appearance-based Gabor Wavelet Transform (GWT) and Local Binary Pattern (LBP) methods are adopted for recognizing neutral and 6 emotional expressions which consist of angry, scared, happy, hate, confused and sad. Feature extraction was carried out by using both methods and combination of these methods serially. In the performed expressions, the extracted features of the most distinct zones in the facial area where the eye and mouth region, have been used to classify the emotions. Also, the combination of these region features has been used to improve classifier performance. Control subjects and transplant patients' ability to perform emotional expressions have been determined with K-nearest neighbor (KNN) classifier with region-specific and method-specific decision stages. The results have been compared with healthy group. It has been observed that transplant patients don't reflect some emotional expressions. Also, there were confusions among expressions.

The decade of face transplant outcomes.

At the 10th year anniversary of the first face transplantation, 37 patients worldwide, were the recipients of faces coming from human donors. Five patients died due to complications, noncompliance with immunosuppressive medications and development of cancer. Despite the initial debates and ethical concerns, face transplantation became a clinical reality with satisfactory functional outcomes. The areas of controversy still include the impact of life-long immunosuppression on otherwise healthy patients as well as the selection process of face transplant candidates. Other concerns include financial support for this new generation of transplants as well as social re-integration and patients return to work after face transplantation. Based on over 20 years of research experience in the field of vascularized composite allotransplantation (VCA), and clinical experience as a leading surgeon of the US first face transplantation, this review will summarize the well-known facts as well as unexpected outcomes and challenges of face transplantation.

The miracle of face transplantation after 10 years.

INTRODUCTION: At the 10th year anniversary of the first face transplantation, there are currently 36 patients worldwide, who are the recipients of faces coming from human donors. AREAS OF AGREEMENT: Despite the initial debates and ethical concerns, face transplantation became a clinical reality with satisfactory functional outcomes. AREAS OF CONTROVERSY: The areas of controversy still include the impact of lifelong immunosuppression on otherwise healthy patients as well as the selection process of face transplant candidates. GROWING POINTS: Other concerns include financial support for this new generation of transplants as well as social reintegration and patients return to work after face transplantation. AREAS TIMELY FOR DEVELOPING RESEARCH: Based on over 20 years of research experience in the field of vascularized composite allotransplantation, and clinical experience as a leading surgeon of the US first face transplantation, this review will summarize the well-known facts as well as unexpected outcomes and challenges of face transplantation.

Surgical Optimization of Motor Recovery in Face Transplantation.

BACKGROUND: Face transplantation (FT) has emerged as a viable option for treating devastating facial injuries. Most reported outcomes have demonstrated satisfactory motor and sensory restoration despite differences in technique. The authors have developed an algorithm of facial nerve management in these challenging patients. Our principles of management are illustrated by 2 specific patients. METHODS: A retrospective analysis of prospectively collected data on 2 full face transplants was performed. Both patients required nerve grafting during full FT. Patient 1 due to short donor facial nerve stumps and patient 2 due to intraoperative soft tissue swelling. Patient 2 required a nerve transfer 11 months after full FT due to impaired motor recovery opposite the side of nerve grafting. Follow-up examinations consisting of manual muscle testing and Sunnybrook Facial Grading System 6 to 42 months after full FT with selected video examinations were critically reviewed. RESULTS: Patient 1 had symmetrical motor recovery with gradual improvements noted throughout. At 6 months, Patient 2 had asymmetrically improving motor function. After nerve transfer, the patient showed gradual improvement in motor recovery, symmetry, and tone. Videos for each patient demonstrate the evolution of the patients' ability to smile from 6 to 42 months. DISCUSSION: The authors describe their assessment of motor recovery and management of facial nerve reconstruction as it pertains to FT. Finally, the authors illustrate the principles of nerve transfer are applicable to FT recipients.

Face transplantation: psychological outcomes at three-year follow-up.

BACKGROUND: The advent of face transplantation has raised both ethical and psychological issues. Mortality of 18 existing face transplant recipients is 11.1% (2/18) through 2011. OBJECTIVE: Psychological outcomes are as important in face transplantation as is restoring the face physically. Little quantitative information has been published this area. METHODS: Data was systematically collected over 3 years with a face transplant recipient, including appearance self-rating, body image, mood changes, pain rating, perception of teasing, quality of life, self-esteem, and social reintegration. We identified a significant gap in rating instruments for use in the field, so we developed the Perception of Teasing-FACES, Facial Anxiety Scale-State, and the Cleveland Clinic FACES score, analogous to the model for end-stage liver disease (MELD) score for prioritizing patients for a face transplant registry. RESULTS: Appearance self-rating rose from 3/10 prior to transplantation to 7/10 now. Anxiety about body image and the Facial Anxiety score were halved by the end of the third year. Beck Depression Inventory fell from 16 (prior to transplant) to 8. Chronic daily pain was 6-7/10 prior to transplant and 0/10 by day 50. Perception of Teasing-FACES scores fell from 25 to 9 by the end of year 3. Quality of life improved on the Social Environment Domain of the psychological adjustment to illness scale-self-rated (PAIS-SR), where the score dropped from 15 to 1 by the end of year 3, indicating marked improvement in social reintegration. CONCLUSIONS: Standardized data collection may help quantify psychological outcomes with facial transplantation to determine whether the risks of immunosuppression over time are offset by improved quality of life for recipients.

Psychosocial changes 6 months after face transplantation.

BACKGROUND: The goal of facial transplantation is to transform severely deformed features in a single, complex operation. Although nearly 20 have been completed since 2005, there is limited information about the subsequent psychosocial status of recipients. OBJECTIVE: The purpose of this study is to describe such changes as captured on a variety of psychosocial measures 3 and 6 months after full facial transplantation among 3 adults who all completed a comprehensive psychiatric assessment before the procedure. RESULTS: We hypothesized and found that participants experienced significant improvement on quality of life measures of physical and mental health based on the MOS-SF -12. While the recipients experienced a decline in their physical quality of life in the 3 months immediately after surgery, they had improvement by 6 months (p = 0.02). Overall mental health showed steady improvement from the time before surgery to 6 months later (p = 0.04). These changes, however, were not reflected in another popular measure of quality of life, the EQ-5D. There were no changes in participants ' self-esteem or dyadic function over the same period of time. CONCLUSION: As facial transplantation evolves from being a novel surgical procedure to an increasingly common clinical practice, future efforts to delineate the psychosocial changes experienced by recipients might include mixed methods analyses, with both qualitative and quantitative data, as well as collaborative assessment protocols shared among facial transplantation programs.

[Facial allografts and oral rehabilitation]. / Allogreffes de la face et réhabilitation orale.

The main objective of facial allografts is functional. On this account, oral rehabilitation is pivotal. Two types of cases are possible. Firstly, the indication of facial allograft concerns only the soft tissues. If so, dental care is similar to the one of patients with an organ transplant. Dental implants are a priori contraindicated. A possible indication has to be discussed with the multidisciplinary team. Secondly, the indication is the one of a mandibular and/or maxillary reconstruction. The objective will be a total reconstruction. It could be performed immediately with the allotransplantation of a toothed mandible or maxillar, if the local status permits it. To date, among patients who have benefited from a toothed allotransplant, no tooth has been lost. The first cases have been operated in 2009. If donor teeth cannot be conserved with the allotransplant, the oral rehabilitation will have to be done ideally with adjunctive prostheses. It is rarely possible, for example because of the lack of crests. In case of impossibility, an implant-based rehabilitation can be discussed. One case has been performed with basal implants (cortically anchored disk-design implants) with a five-year follow-up without loosing any loss of implant or infection.

A position paper in support of face transplantation in the blind.

Facially disfigured blind patients have historically been considered for face transplantation with skepticism. Although no formal position paper regarding their exclusion has been published to date, functional, social, rehabilitative, and ethical concerns related to blind patients' candidacy for face transplantation may be inferred. The authors provide a summary of these reservations and a counterargument to their assumptions, drawing on outcomes measures reported for face transplant procedures performed to date, and their own institutional experience in performing face transplants on blind patients. The authors therefore provide a rationale for the inclusion of facially disfigured blind patients in face transplantation protocols in the future.

Near-total human face transplantation for a severely disfigured patient in the USA.

BACKGROUND: Multiple reconstructive procedures are common for the reconstruction of complex facial deformities of skin, soft tissues, bony structures, and functional subunits, such as the nose, lips, and eyelids. However, the results have been unsatisfactory. An innovative approach entailing a single surgical procedure of face allograft transplantation is a viable alternative and gives improved results. METHODS: On Dec 9, 2008, a 45-year-old woman with a history of severe midface trauma underwent near-total face transplantation in which 80% of her face was replaced with a tailored composite tissue allograft. We addressed issues of immunosuppressive therapy, psychological and ethical outcomes, and re-integration of the patient into society. FINDINGS: After the operation, the patient did well physically and psychologically, and tolerated immunosuppression without any major complication. Routine biopsy on day 47 after transplantation showed rejection of graft mucosa; however, a single bolus of corticosteroids reversed rejection. During the first 3 weeks after transplantation, the patient accepted her new face; 6 months after surgery, the functional outcome has been excellent. In contrast to her status before transplantation, the patient can now breathe through her nose, smell, taste, speak intelligibly, eat solid foods, and drink from a cup. INTERPRETATION: We show the feasibility of reconstruction of severely disfigured patients in a single surgical procedure using composite face allotransplantation. Therefore, this should be taken in consideration as an early option for severely disfigured patients. FUNDING: None.

A model for functional recovery and cortical reintegration after hemifacial composite tissue allotransplantation.

BACKGROUND: The ability to achieve optimal functional recovery is important in both face and hand transplantation. The purpose of this study was to develop a functional rat hemifacial transplant model optimal for studying both functional outcome and cortical reintegration in composite tissue allotransplantation. METHODS: Five syngeneic transplants with motor and sensory nerve appositions (group 1) and five syngeneic transplants without nerve appositions (group 2) were performed. Five allogeneic transplants were performed with motor and sensory nerve appositions (group 3). Lewis (RT1) rats were used for syngeneic transplants and Brown-Norway (RT1) donors and Lewis (RT1) recipients were used for allogeneic transplants. Allografts received cyclosporine A monotherapy. Functional recovery was assessed by recordings of nerve conduction velocity and cortical neural activity evoked by facial nerve and sensory (tactile) stimuli, respectively. RESULTS: All animals in groups 1 and 3 showed evidence of motor function return on nerve conduction testing, whereas animals in group 2, which did not have nerve appositions, did not show electrical activity on electromyographic analysis (p < 0.001). All animals in groups 1 and 3 showed evidence of reafferentation on recording from the somatosensory cortex after whisker stimulation. Animals in group 2 did not show a cortical response on stimulation of the whiskers (p < 0.001). CONCLUSION: The authors have established a hemiface transplant model in the rat that has several modalities for the comprehensive study of motor and sensory recovery and cortical reintegration after composite tissue allotransplantation.