Lengthening temporalis myoplasty versus free muscle transfer with the gracilis flap for long-standing facial paralysis: A systematic review of outcomes

Task force of the Brazilian Society of Otology - evaluation and management of peripheral facial palsy

OBJECTIVE

To review key evidence-based recommendations for the diagnosis and treatment of peripheral facial palsy in children and adults.

METHODS

Task force members were educated on knowledge synthesis methods, including electronic database search, review and selection of relevant citations, and critical appraisal of selected studies. Articles written in English or Portuguese on peripheral facial palsy were eligible for inclusion. The American College of Physicians' guideline grading system and the American Thyroid Association's guideline criteria were used for critical appraisal of evidence and recommendations for therapeutic interventions.

RESULTS

The topics were divided into 2 main parts: (1) Evaluation and diagnosis of facial palsy: electrophysiologic tests, idiopathic facial palsy, Ramsay Hunt syndrome, traumatic peripheral facial palsy, recurrent peripheral facial palsy, facial nerve tumors, and peripheral facial palsy in children; and (2) Rehabilitation procedures: surgical decompression of the facial nerve, facial nerve grafting, surgical treatment of long-term peripheral facial palsy, and non-surgical rehabilitation of the facial nerve.

CONCLUSIONS

Peripheral facial palsy is a condition of diverse etiology. Treatment should be individualized according to the cause of facial nerve dysfunction, but the literature presents better evidence-based recommendations for systemic corticosteroid therapy.

Secondary dynamic midface reanimation with gracilis free muscle transfer after failed reconstruction attempt: A 15-year experience

BACKGROUND

The quantitative outcome of secondary reanimation after a failed primary reconstruction attempt for facial paralysis is rarely reported in the literature. This study aimed to investigate the feasibility of secondary reanimation with gracilis free muscle transfer (GFMT) and whether this outcome is influenced by the primary reconstruction.

METHODS

Twelve patients with previously failed static procedures (static group, n = 6), temporal muscle transfer (temporal transfer group, n = 2), and GFMT (GFMT group, n = 4) were all secondarily reanimated with GFMT. The clinical outcome was graded with the eFACE metric. The objective oral commissure excursion was measured with Emotrics, and the artificial intelligence software FaceReader evaluated the intensity score (IS) of emotional expression.

RESULTS

The mean follow-up was 40 ± 27 months. The eFACE metric showed a statistically significant (p < 0.05) postoperative improvement in the dynamic and smile scores across all groups. In the GFMT group, oral commissure with smile (75.75 ± 20.43 points), oral commissure excursion while smiling with teeth showing (32.7 ± 4.35 mm), and the intensity of happiness emotion while smiling without teeth showing (IS of 0.37 ± 0.23) were significantly lower as compared with the static group postoperatively (98.83 ± 2.86 points, p = 0.038; 41.7 ± 4.35 mm, p = 0.025; IS 0.83 ± 0.16, p = 0.01).

CONCLUSIONS

Our data suggest that secondary dynamic reconstruction with GFMT is feasible should the primary reconstruction fail. The secondary GFMT appears to improve the outcome of primary GFMT; however, the oral commissure excursion while smiling might be lower than that in patients who had static procedures as primary reconstruction.

Case Report: Single-stage facial reanimation with bilateral lengthening temporalis myoplasties for immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome related developmental facial palsy

Immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome is a rare primary immunodeficiency, typically associated with clinical features of intractable diarrhoea, type 1 diabetes mellitus and eczema. We present a case of IPEX syndrome referred to our regional facial palsy service for smile restoration surgery. The patient presented with dissatisfaction of facial appearance, including mask-like facies and no functional smile. Pre-operative electromyography confirmed normal temporalis muscle activation. Consequently, the patient was offered single-stage bilateral lengthening temporalis myoplasties. The patient reported improved satisfaction with facial appearance. Surgery resulted in good early resting and voluntary symmetry. Oral commissures were elevated at rest improving oral incompetence. This is the first description of facial animation surgery in the context of IPEX syndrome. With careful consideration and patient selection, successful surgical restoration of resting symmetry and dynamic commissural smile can be achieved in this complex cohort of patients.

Sternocleidomastoid Muscle Transfer for Treatment of Longstanding Facial Paralysis: Long-term Outcomes and Complications

BACKGROUND/AIM

The use of sternocleidomastoid muscle (SCM) flap for facial reanimation was established in the 1980s by the senior author of this paper. We aimed to analyze long-term outcome and complications of this procedure.

PATIENTS AND METHODS

We conducted a retrospective chart review of all patients undergoing SCM reanimation for longstanding facial palsy between January 2009 and December 2015. Patients with follow-up longer than 12 months (range=12-96) were included in the study. Facial muscle function was evaluated before and at each follow-up after the surgery with the House-Brackmann (HB) scale-facial nerve grading system and Facegram analysis. Donor site morbidity and overall complication rates were documented and analyzed.

RESULTS

Forty-two patients aged 18-66 years (mean age=37) with a mean duration of facial palsy of 5 years (range=2-48) met the inclusion criteria. The HB score 2 years after surgery improved significantly (p<0.05) in comparison to the pre-operative condition (3.6 vs. 4.7). Twelve months after surgery, oral commissure excursion improved by mean 8.95 mm. No flap necrosis occurred, nor compromise of neck and shoulder function despite an obvious contour defect in the SCM donor site. None of the patients presented head posture or movement issues.

CONCLUSION

The SCM flap transfer is a reliable and effective procedure to achieve moderate improvement of the oral commissure excursion using a local method with moderate donor site morbidity. It can be regarded as a valuable option for dynamic facial reanimation in case of longstanding facial palsy.

Dynamic Facial Reanimation in an Overweight Patient and with Significant Comorbidities: An Objective Analysis of Labbè Technique

Gracilis free muscle transfer is considered the gold standard technique for facial reanimation in cases of facial palsy. However, it is limited by its long operative and recovery times, the need for a second surgical site, and its outcomes that can sometimes show midfacial bulk and oral commissure malposition. Facial reanimation with lengthening temporalis myoplasty (LTM)-Labbé technique- carries the advantage of having a shorter surgical time, a faster recovery, and being a less invasive surgery. Almost all patients included in studies of LTM were evaluated by subjective methods, and very little quantifiable data was available. A 64-year-old woman presented with long-standing incomplete right facial palsy secondary to acoustic neuroma surgery. Since she was overweight (body mass index [BMI]: 43.9) and had several cardiovascular comorbidities (hypertension, dyslipidemia), she was not a good candidate for gracilis free muscle transfer. She was submitted to facial reanimation with LTM. Fourteen months after surgery, she presented excellent facial symmetry, both at rest and in contraction, while smiling. She was evaluated with the Facegram-3D, a technology that we have developed for dynamic evaluation of facial muscle contraction. The analysis showed symmetry at rest and contraction, according to Terzis and Noah. Regarding vertical and horizontal displacement, the postoperative movement was synchronized and with less fluctuations when compared with the preoperative period. Notably, the anatomical pair's trajectories were smoother. Similar velocity profiles were found between anatomical pairs, with less abrupt changes in velocity values, further supporting improved movement control. Comparing the symmetry index, which takes a theoretical maximum of 1.0 for perfect 3D symmetry, its value was 0.56 for the commissures and 0.5 for the midpoints in the preoperative period, having improved to 0.91 and 0.82, respectively, 3 months postoperatively. Good aesthetic and functional results were achieved using the Labbè technique. LTM is a good option in cases of long-standing facial paralysis, if the patient desires a single-stage procedure with almost immediate dynamic function. Moreover, this technique assumes extreme importance in facial reanimation of patients of advanced age, overweight, or those who have several comorbidities.

Temporalis Tendon Transfer Versus Gracilis Free Muscle Transfer: When and Why?

Temporalis tendon transfer (T3) and gracilis free muscle transfer (GFMT) are popular techniques in lower facial rehabilitation when reinnervation techniques are unavailable. T3 involves a single-stage outpatient procedure resulting in immediate improvement in resting symmetry and a volitional smile. GFMT allows a spontaneous smile, customized vectors, and increased excursion but requires longer surgical time, a delay before movement, and specialized equipment. Ultimately, shared decision making between the clinician and patient should focus on the patient's goals and unique medical condition.

Maximizing the Smile Symmetry in Facial Paralysis Reconstruction: An Algorithm Based on Twenty Years' Experience

Over the last two decades, the senior author (B.H.) has had an extensive experience with facial paralysis reconstruction. During this period, the techniques have evolved substantially based on the experience and after observing and analyzing the surgical outcomes. The purpose of this article is to relay the lessons learned from the 20 years' experience and suggest an algorithm. In this retrospective study, we have included 343 cases of facial paralysis cases. Complete facial paralysis cases were 285 and 58 were incomplete facial paralyses, both requiring surgical procedures. Complete facial paralyses were divided in to short term (n = 83) and long term (n = 202). In total, 58% of the patients were women and 42% were men. The age range was 6 to 82 years. The techniques employed were direct suture, nerve grafts, cross-facial nerve grafts (CFNGs), masseteric-to-facial nerve transference, hypoglossal-to-facial nerve transference, free muscle transplants, and lengthening temporal myoplasty to achieve the best symmetry after reanimation of unilateral, bilateral, complete, and incomplete facial paralysis. The type of paralysis, objective measurements, the personal patient's smile, and the gender are key concepts to be considered before scheduling a dynamic facial paralysis reconstruction. For unilateral facial paralysis, the time of onset, the type of paralysis, the patient's comorbidities, and the healthy side status are some of the determining factors when selecting the correct technique. The preferred techniques for unilateral facial paralysis are direct repair, CFNG, masseteric-to-facial transposition, and free gracilis transfer. For incomplete facial paralysis, the masseteric-to-facial nerve transference is preferred. In bilateral facial paralysis, bilateral free gracilis transfer is performed in two stages using the nerve of the masseter muscle as the source of innervation. The authors provide an algorithm which simplifies facial paralysis reconstruction to achieve the greatest facial symmetry while thinking about the potential comorbidities and developing spontaneity smile according to the gender of the patient.

Evaluating Quality of Life After Facial Reanimation Using the Facial Clinimetric Evaluation Scale in a Series of Pediatric Patients

BACKGROUND

Facial palsy can have significant functional and psychological impact. Dynamic facial reanimation methods have provided means of restoration of smile. There remains a dearth of quality of life data in children. The authors aim to assess patient reported outcomes in this underreported population.

METHODS

A retrospective review was performed of pediatric patients with facial palsy who had dynamic facial reanimation from 2009 to 2017 at a single institution. Patients were sent a digital Facial Clinimetric Evaluation (FaCE) questionnaire, a validated tool to assess patient quality of life. FaCE statements are grouped into 6 categories: facial movement, facial comfort, oral function, eye comfort, lacrimal control, and social control.

RESULTS

Twenty patients met inclusion criteria. Fourteen successfully completed the survey. With normal function being 100, our cohort scored: facial movement 38.7 ± 14.3; facial comfort 67.3 ± 23, oral function 75 ± 22.7, eye comfort 68.75 ± 18.2, lacrimal control 53.6 ± 32.5, social function 64.3 ± 25.6. The overall FaCE score was 61.07 ± 10.85. The facial movement subscores were lower for brow raise 16.1 ± 33.4 relative to smiling 53.6 ± 29.2 and lip pucker, 46.4 ± 23.7. No correlation was found between facial movement scores and total scores (R2 < 0.01). There was a strong negative correlation between total scores and time since procedure (Spearman's rho R =  -0.45).

CONCLUSION

Our pediatric facial reanimation cohort demonstrated excellent social function, in contrast to a relatively lower facial movement score. The low facial movement score was mediated by low score for brow raise and was not correlated to overall FaCE score. Interestingly, overall FaCE score tended to decrease with time from procedure.

The sternohyoid muscle flap for new dynamic facial reanimation technique: Anatomical study and clinical results

BACKGROUND

Long-term facial nerve palsy has a highly negative impact on patients' quality of life. In 2016, Alam reported one case of facial reanimation with the sternohyoid muscle after publishing a preclinical study in 2013. Despite the potentially ideal characteristics of this muscle for reanimation of facial palsy, this technique is still not widely used. The objective of our description of cases was to present the clinical results obtained with the surgical procedure and the study on cadavers to confirm the anatomical findings.

METHODS

This work describes the anatomical study of the vascular and nervous pedicle of the sternohyoid muscle compared with clinical results from a series of patients with long-term facial paralysis who underwent facial reanimation between June 2016 and September 2019, through the insertion of the sternohyoid muscle into the masseteric nerve.

RESULTS

The anatomical study was conducted in eight human hemi-necks. In five cases (62%), the vascular pedicle was provided by the superior thyroid artery, and the entrance of the ansa cervicalis to the muscle was constant 1.8 cm from the distal insertion. This series included ten patients who underwent the surgery technique of facial reanimation using the sternohyoid muscle, with a 90% (n = 9) of reinnervation; 100% (n = 10) of flaps were viable, and none of the patients showed complications in the donor area.

CONCLUSIONS

The sternohyoid muscle showed itself as a reliable muscle as a free flap in facial reanimation, and alternative to the gracilis flap. The surgical technique was safe, without any complications, with excellent excursion, recovery, and aesthetic results.

Evaluating Functional Outcomes in Reanimation Surgery for Chronic Facial Paralysis: A Systematic Review

Background:

Chronic facial paralysis can lead to significant functional and psychosocial impairment. Treatment often involves free muscle flap-based facial reanimation surgery. Although surgical techniques have advanced considerably over the years, consensus has yet to be reached for postoperative outcome evaluation. To facilitate outcome comparison between the various techniques for free muscle-flap-based reanimation, a standardized, widely accepted functional outcomes assessment tool must be adopted.

Methods:

In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, we performed a systematic review of the PubMed, Cochrane, and Embase databases to identify the reported functional outcome measurement tools used in the free muscle flap-based reanimation literature.

Results:

The search yielded 219 articles, 43 of which met our inclusion and exclusion criteria. We noted an increase in publications reporting the utilization of objective measures over time, particularly software-based tools, as well as increased utilization of patient reported outcomes measures.

Conclusions:

Based on the trends identified in the literature, we suggest standardization of outcome measures following facial reanimation surgery with free muscle-flap using a combination of the Facial Assessment by Computer Evaluation (FACEgram) software and the Facial Clinimetric Evaluation (FaCE) Scale.

Workhorse Free Functional Muscle Transfer Techniques for Smile Reanimation in Children with Congenital Facial Palsy: Case Report and Systematic Review of the Literature

BACKGROUND

Pediatric facial palsy represents a rare multifactorial entity. Facial reanimation restores smiling, thus boosting self-confidence and social integration of the affected children. The purpose of this paper is to present a systematic review of microsurgical workhorse free functional muscle transfer procedures with emphasis on the long-term functional, aesthetic, and psychosocial outcomes.

MATERIALS AND METHODS

We performed a literature search of the PubMed database from 1995 to 2019 using the following search strategy: "facial paralysis"[Title/Abstract] OR "facial palsy"[Title]. We used as limits: full text, English language, age younger than 18 years, and humans. Two independent reviewers performed the online screening process using Covidence. Forty articles met the inclusion criteria. The protocol was aligned with the PRISMA statement (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) and was registered at the International Prospective Register of Systematic Reviews (PROSPERO, CRD42019150112) of the National Institute for Health Research.

RESULTS

Free functional muscle transfer procedures include mainly segmental gracilis, latissimus dorsi, and pectoralis minor muscle transfer. Facial reanimation procedures with the use of the cross-face nerve graft (CFNG) or masseteric nerve result in almost symmetric smiles. The transplanted muscle grows harmoniously along with the craniofacial skeleton. Muscle function and aesthetic outcomes improve over time. All children presented improved self-esteem, oral commissure opening, facial animation, and speech.

CONCLUSIONS

A two-stage CFNG plus an FFMT may restore a spontaneous emotive smile in pediatric facial palsy patients. Superior results of children FFMT compared to adults FFMT are probably attributed to greater brain plasticity.

Inveterated Facial Palsy Correction with Endoscopically Assisted Multiple Muscle Transposition and Lifts: The EMTL Procedure

Introduction  The aim of the present analysis was to study the safety and efficacy associated with reanimation in facial nerve palsy by the endoscopically assisted multiple muscle transposition and lifts (EMTL).

Patients and Methods  The study sample included all patients who had undergone a facial reanimation by EMTL procedure from September 2015 to May 2019. The patients were analyzed retrospectively, with more than 1 year of follow-up, and were evaluated in terms of functional-aesthetic results and postoperative complications. The outcome was evaluated with the Sunnybrook scale.

Results  Fourteen patients were included in the present study. They were all inveterate palsies with minimum 4 years from the initial injury. The preoperative Sunnybrook score ranged from 0 to 5 and the postoperative ranged from 30 to 65. Spontaneous smile achievement was obtained in 10 patients and only mild restoration in one patient. The scar and static correction were satisfactory in all patients. Eye protection was improved in all cases with some form of active blinking in six cases.

Conclusion  This study showed that facial palsy correction with EMTL procedure offers a promising alternative treatment for patients with facial palsy not suitable for microsurgical muscle transposition.

Acute Peripheral Facial Palsy: Recent Guidelines and a Systematic Review of the Literature

BACKGROUND

This study reviews recent literature on facial palsy guidelines and provides systematic reviews on related topics of interest.

METHODS

An electronic database search was performed to identify recent guidelines dealing with facial nerve palsy, systematic reviews and recent meta-analysis published between 2011 and 2019 (inclusive). The literature search used the search terms "Bell's palsy," "Ramsay-Hunt syndrome," "Facial palsy," "Facial paralysis," "Facial paresis," "Guideline," "Meta-analysis," "Systematic review," and "Randomized controlled trial." Only studies written in English were used.

RESULTS

The characteristics of treatment trends for facial palsy have been reviewed over the past decade. The most prominent change noted may be the shift from the conventional House-Brackmann facial nerve grading system to the Sunnybrook and eFACE systems. In addition, the results of serial meta-analyses indicate increasing agreement with the use of surgical decompression of the facial nerve. Beyond steroids or combined steroid-antiviral treatment, various novel drugs and treatments have been tried. For long-standing facial paralysis and postparetic synkinesis sequelae after facial palsy, facial reanimation has been highlighted and the necessity of new paradigms have been raised.

CONCLUSION

For peripheral facial paralysis, various changes have been made, not only in the facial nerve grading systems, but also in medical treatments, from surgical procedures to rehabilitation, during the last decade.

The mini-temporalis turnover flap for midface reanimation: Photogrammetric and patient-rated outcomes

BACKGROUND

Mini-temporalis transposition (MTT) flaps, modified from Gillies' technique, have become less popular than temporalis tendon transfers for midface reanimation. MTT involves raising the middle third of the temporalis, transposition over the zygomatic arch and lengthening with deep temporalis fascia which is sutured to the orbicularis oris.

AIM

This retrospective study assessed subjective and objective outcomes following MTTs by a single surgeon from 2009 to 2019.

METHODS

Operative and surgical details were recorded. Four blinded consultants rated pre- and postoperative videos according to Terzis' scale. Pre- and postoperative resting, Mona Lisa and canine smile photographs were analysed using Emotrics, the software that automatically computes differences in inter-landmark distances. Patients also completed the Glasgow Benefit Inventory (GBI) patient-rated outcome measure.

RESULTS

Forty-one patients (mean age 65.8 ± 15.5) underwent MTT, median 3 (0.4-57) years post-paralysis and were followed up for median of 2.2 (0.4-8.8) years. Higher mean postoperative Terzis score demonstrates symmetric and aesthetic improvements (3 ± 1.3 vs. 2 ± 1; p<0.05). Emotrics analysis showed postoperative improvements in resting and dynamic symmetry of all indices, with the majority statistically significant (p<0.003). The mean GBI was 35.19 with 17 (94.4%) patients reporting improvement, whereas one (5.6%) patient reported detriment after surgery. Two (5.4%) patients suffered complications: one haematoma and one infection. Four patients (9.8%) required revisional flap tightening. No patients requested revisional surgery for temporal hollowing or zygomatic fullness.

CONCLUSIONS

MTT effectively improves both subjective and objective resting and dynamic midface symmetry in a single stage. These results suggest this technique is a good alternative to temporalis tendon transfer techniques.

Twenty-Five-Year Outcomes of Treatment of Irreversible Facial Paralysis with Gillies and McLaughlin Techniques

INTRODUCTION

Data on treatment outcomes of surgical correction of irreversible facial paralysis is rare and long-term outcomes are scarce in the literature, making treatment choices difficult for operating surgeons.

OBJECTIVE

This study evaluated 25-year outcomes of treatment of irreversible facial paralysis with Gillies and McLaughlin techniques with a focus on general functional and age-related functional outcomes.

METHODS

Data of all patients who underwent surgical correction of facial paralysis using either Gillies or McLaughlin procedure between 1994 and 2018 were included in the analysis of this retrospective, single-centre study (n = 154).

RESULTS

Gillies surgery was performed on 12 and McLaughlin technique on 33 patients. Gillies and McLaughlin surgeries were associated with high patient satisfaction (75-86%), low complication rates (8-24%), and achievement of full or partial eyelid closure in 75% as well as smile reanimation in 97% of patients operated. Achievement of resting facial symmetry was low for both techniques and ranged from 27 to 46%. Age-related functional outcomes were generally superior in middle-aged patients (21-59 years) with fewer complications and reoperations compared to younger and older patients.

CONCLUSIONS

Surgical correction with Gillies or McLaughlin dynamic muscle support techniques yielded good clinical results with high patient satisfaction and should, therefore, be included as a treatment option for facial reanimation of irreversible facial paralysis. Patient age may play a role in treatment outcomes and reoperation and complication rates and should be taken into careful consideration during treatment planning.

Long-term outcomes of Gillies and McLaughlin's dynamic muscle support in irreversible facial paralysis: A retrospective single-centre study with 25-year follow-up

The aim of this study was to evaluate the long-term outcomes of Gillies and McLaughlin's dynamic muscle support with regard to functional outcomes and assess possible effects of comorbidities on both functional outcomes and reoperation and complication rates. A retrospective single-centre study was conducted in all patients (n = 154) who underwent surgical correction of irreversible facial paralysis from 1994 to 2018. Patients with either Gillies procedure or McLaughlin's dynamic muscle support or a combination of these techniques were included in the analysis. Data on reoperations, comorbidities, complications, functional outcomes and patient satisfaction were analysed. Sixty-nine patients had Gillies and McLaughlin combination, 12 patients had Gillies and 33 patients had McLaughlin procedure alone. Patient satisfaction was generally high (>80%) and highest when McLaughlin procedure alone was performed and in patients without comorbidities. Reoperations were performed in 80 patients (70%; mean 2.2 ± 1.7) and complications affected 16 patients (14%). Smile ability and movement control of the corner of the mouth were achieved in >85% of patients operated, whereas complete eyelid closure and facial symmetry at rest were attained in only 46%‒68% of patients. Patients with no underlying medical conditions were able to smile more often, had motor control of the corner of the mouth, better facial symmetry at rest and fewer complications. Although newer surgical techniques are offered in many centres, this study shows that conventional facial reanimation of irreversible facial paralysis with Gillies or McLaughlin's dynamic muscle support or a combination of both produces yield good results and, therefore, continues to be a viable treatment option for many patients.

Comparison of Objective Outcomes in Dynamic Lower Facial Reanimation With Temporalis Tendon and Gracilis Free Muscle Transfer

Importance

Facial paralysis affects patients' physical, social, and psychological function. Dynamic smile reanimation can mitigate these effects, but there are limited data to guide the surgeon in selecting the best reanimation procedure for each patient.

Objective

To compare quantitative changes in oral commissure symmetry and smile excursion following temporalis tendon transfer (T3) and gracilis free muscle transfer.

Design, Setting, and Participants

Retrospective case series of 28 adults with unilateral facial paralysis seeking dynamic lower facial reanimation at a tertiary academic medical center between July 1, 2010, and July 30, 2014. Data were analyzed from May 1, 2016, to June 30, 2016.

Interventions

Minimally invasive T3 (n = 14) compared with gracilis free muscle transfer (n = 14).

Main Outcomes and Measures

Measured symmetry of the oral commissure between the healthy and paralyzed sides in the horizontal, vertical, and angular dimension and excursion of the paralyzed commissure following reanimation compared with the healthy commissure.

Results

Of the 28 patients, 19 (68%) were women; mean (SD) age was 51.7 (17) years. Commissure symmetry during smile improved significantly for the T3 patients in the vertical and angular dimensions, and the gracilis free muscle transfer patients had significant improvement in the vertical and horizontal dimensions. Commissure excursion significantly improved in both groups following surgery, with a larger improvement seen in the gracilis free muscle transfer group (11.3 mm; 95% CI, 7.0 to 15.5 mm) compared with the T3 group (4.8 mm; 95% CI, 0.2 to 9.3 mm), with a mean difference of 6.5 mm (95% CI, 0.7 to 12.4 mm; Cohen d, 0.86). Postoperative smile excursion of the paralyzed side was within 1.0 mm of the healthy side in the gracilis free muscle transfer group (95% CI, -2.1 to 4.0 mm).

Conclusions and Relevance

Temporalis tendon transfer and gracilis free muscle transfer both improve oral commissure symmetry and excursion in facial paralysis. The improvement in smile excursion appears to be larger in patients treated with gracilis free muscle transfer and, on average, the excursion approximates the contralateral healthy side.

[Facial paralysis sequelae: Long term follow-up revision surgery, redo, continuing care]

Facial paralysis sequelae have an intense psycho-social impact which imposes an optimal care in the long run. The surgical challenges are numerous, and the therapeutic weapons are multiple. We propose an analysis of these treatments by the prism of their pitfalls and their limits. The complications of the main surgical procedures are described as well as the details of the rework necessary to cope with them or to quickly correct the defects. Moreover, the result limits are detailed with suggestions to improve them. Finally, we develop the necessary iterative treatments or new therapeutic proposals that are essential for the long-term care of these patients whose sequelae of facial paralysis evolve with time and aging. The surgery of facial paralysis is not unequivocal. It requires humility, patience and tenacity to support the patient throughout his life.

Effectiveness and safety of the use of gracilis muscle for dynamic smile restoration in facial paralysis: A systematic review and meta-analysis

BACKGROUND

Smiling is a fundamental component of social interactions. Significant challenges arise for patients with facial palsy. One of the key procedures for dynamic smile restoration is the microneurovascular transfer of a gracilis muscle. We aimed to assess the effectiveness and safety of dynamic smile reanimation surgery using the free gracilis muscle unit in patients with facial palsy.

METHODS

We conducted a systematic review and meta-analysis of studies reporting surgical outcomes of dynamic smile restoration using free gracilis muscles identified from EMBASE, Medline, and Web of Science databases from their inception to March 15, 2018. Two-stage screening and data extraction were performed by two independent reviewers. Pooled proportions were calculated using random-effects models.

RESULTS

Thirty-one studies including 1647 patients who underwent 1739 free gracilis flaps were included. Twelve (38.7%) studies measured perioperative smile excursion change using six different tools. Six of these studies were homogeneous and were used in meta-analyses of smile excursion improvement, which revealed a mean change of 7.5 mm (95% CI 6.0-9.0 mm, I² 86.7%) perioperatively. Twenty (64.5%) studies reported perioperative complications, and pooled proportions of flap failures were of 2.9% (95% CI 1.3-4.5%, I² 47.7%).

CONCLUSIONS

Dynamic smile restoration using a free gracilis muscle may represent an effective procedure to regain oral commissure motion and is associated with an approximately 3% rate of flap failure. Masseteric nerve coaptations lead to larger improvements in perioperative smile excursion (10 mm) than cross-facial nerve grafts (6.8 mm). Future studies with homogeneous reporting of smile excursion and patient-reported outcome measures are needed.

Craniofacial Microsomia

Clinicians use different diagnostic terms for patients with underdevelopment of facial features arising from the embryonic first and second pharyngeal arches, including first and second branchial arch syndrome, otomandibular dysostosis, oculoauriculovertebral syndrome, and hemifacial microsomia. Craniofacial microsomia has become the preferred term. Although no diagnostic criteria for craniofacial microsomia exist, most patients have a degree of underdevelopment of the mandible, maxilla, ear, orbit, facial soft tissue, and/or facial nerve. These anomalies can affect feeding, compromise the airway, alter facial movement, disrupt hearing, and alter facial appearance.

Management of Bilateral Facial Palsy

Bilateral facial paralysis is a rare entity that occurs in both pediatric and adult patients and can have congenital or acquired causes. When paralysis does not resolve with conservative or medical management, surgical intervention may be indicated. This article presents the authors' preferred technique for facial reanimation in patients with bilateral congenital facial paralysis. Specifically, a staged bilateral segmental gracilis transfer to ipsilateral nerve to masseter is discussed.

Mixed facial reanimation technique to treat paralysis in medium-term cases

Recent facial paralyses, in which fibrillations of the mimetic muscles are still detectable by electromyography (EMG), allow facial reanimation based on giving new neural stimuli to musculature. However, if more time has elapsed, mimetic muscles can undergo irreversible atrophy, and providing a new neural stimulus is simply not effective. In these cases function is provided by transferring free flaps into the face or transposing masticatory muscles to reinstitute major movements, such as eyelid closure and smiling. In a small number of cases, patients affected by paralysis are referred late - more than 18 months after onset. In these cases, reinnervating the musculature carries a high risk of failure because some or all of the mimetic muscles may atrophy irreversibly while axonal ingrowth is taking place. A mixed reanimation technique to address this involves a neurorrhaphy between the masseteric nerve and a facial nerve branch for the orbicularis oculi, to ensure a stronger innervation to that muscle, associated with the transposition of the temporalis muscle to the nasiolabial sulcus. This gives good symmetry in the rest of the midface, while smiling movement is achievable, but not guaranteed. This one-time facial reanimation is particularly indicated for those who refuse major free-flap surgery or when that may be risky, as in previously operated and irradiated fields. More extensive procedures based on utilizing a free flap to recover smiling, while adding a cross-face nerve graft to restore blinking, may be proposed for motivated patients. Between 2010 and 2015, five patients affected by complete unilateral facial palsy underwent this technique in the Maxillofacial Surgery Department, San Paolo Hospital (Milan, Italy). Symmetry of the middle-third of the face at rest and recovery of smiling was quite good. Complete voluntary eyelid closure was obtained in all cases. Combining temporalis flap rotation and a masseteric-to-orbicularis-oculi-facial-nerve branch neurorrhaphy seems to be a valid solution for those medium-term referred patients.

Lengthening Temporalis Myoplasty: Objective Outcomes and Site-Specific Quality-of-Life Assessment

Objective

Evaluate outcomes of the lengthening temporalis myoplasty in facial reanimations.

Study Design

Case series with planned data collection.

Setting

Ospedali Riuniti, Bergamo, and AOUC Careggi, Florence, Italy.

Subjects and Methods

From 2011 to 2016, 11 patients underwent lengthening temporalis myoplasty; demographic data were collected for each. Pre- and postoperative photographs and videos were recorded and used to measure the smile angle and the excursion of the oral commissure, according to the SMILE system (Scaled Measurements of Improvement in Lip Excursion). All patients were tested with the Facial Disability Index, and they also completed a questionnaire about the adherence to physiotherapy indications.

Results

All patients demonstrated a significant improvement in functional parameters and in quality of life. On the reanimated side, the mean z-line and a-value, measured when smiling, significantly improved in all patients: from 22.6 mm (95% CI, 20.23-25.05) before surgery to 30.9 mm (95% CI, 27.82-33.99) after surgery ( P < .001) and from 100.5° (95% CI, 93.96°-107.13°) to 111.6° (95% CI, 105.63°-117.64°; P < .001), respectively. The mean postoperative dynamic gain, passing from rest to a full smile at the reanimated side, was 3.1 mm (95% CI, 1.30-4.88) for the z-line and 3.3° (95% CI, 1.26°-5.29°) for the a-value. The Facial Disability Index score increased from a preoperative mean of 33.4 points (95% CI, 28.25-38.66) to 49.9 points (95% CI, 47.21-52.60) postoperatively ( P < .001).

Conclusions

The lengthening temporalis myoplasty can be successfully used for smile reanimation, with satisfying functional and quality-of-life outcomes.