Facial Grading Research Articles

Analysis of Upper Facial Weakness in Central Facial Palsy Following Acute Ischemic Stroke.

Central facial palsy (CFP), resulting from upper motor neuron lesions in the corticofacial pathway, is traditionally characterized by the sparing of the upper facial muscles. However, reports of upper facial weakness in CFP due to acute ischemic stroke have challenged this long-held assumption. This study aimed to determine the prevalence of upper facial weakness in CFP and identify its associated clinical factors. In this cross-sectional study, we evaluated consecutive patients with acute ischemic stroke admitted to a university hospital in Thailand from January 2022 to June 2023. Full-face video recordings were analyzed using the Sunnybrook Facial Grading System. Upper facial weakness was defined as asymmetry in at least one upper facial expression. Multivariable logistic regression was performed to identify factors associated with upper facial weakness. Of 108 patients with acute ischemic stroke, 92 had CFP, and among these, 70 (76%) demonstrated upper facial weakness. Tight eye closure (force and wrinkle formation, both 42%) was the most sensitive indicator for detecting upper facial weakness. Greater stroke severity, as reflected by higher NIHSS scores (adjusted odds ratio [aOR], 1.42; 95% CI 1.07-1.88) and the presence of lower facial weakness (aOR, 6.56; 95% CI 1.85-23.29) were significantly associated with upper facial involvement. Although upper facial weakness was generally milder than lower facial weakness, its severity correlated with increasing lower facial asymmetry during movement. Contrary to traditional teaching, upper facial weakness is common in CFP due to acute ischemic stroke. The severity of stroke and the presence of lower facial weakness are key predictors of upper facial involvement. These findings underscore the need for clinicians to reconsider the diagnostic paradigm, recognizing that upper facial weakness can occur in CFP. Enhanced awareness may improve diagnostic accuracy, inform treatment decisions, and ultimately lead to better patient outcomes.

Physical therapy for idiopathic facial paralysis: A systematic review

PurposeIdiopathic facial paralysis is a challenging condition that can significantly impact patients' quality of life. Treatment options include both medical to surgical management. The objective is to further understand and review the current literature on the effectiveness of physical therapy for treatment of idiopathic facial paralysis. Materials and methodsMEDLINE, EMBASE, and Cochrane Library were searched. English-language studies assessing the outcomes of idiopathic facial paralysis in adults after completion of physical therapy were included for analysis. ResultsThis study screened 778 studies, of which 12 met inclusion criteria. There were 228 patients included for analysis. Four studies, contributing 79 patients, included sex and age demographics, with a breakdown of 45 females and 34 males with an average age of 49.4 years. Objective outcomes were most frequently measured by utilizing the Sunnybrook Facial Grading System, followed by House-Brackmann Score and Facial Disability Index. All studies highlighted the positive result physical therapy had on facial rehabilitation. ConclusionThe body of literature on physical therapy in treating idiopathic facial paralysis, although limited in size, strongly supports its use to accelerate recovery and minimize adverse outcomes. These findings suggest the addition of physical therapy in the management of patients with facial paralysis.

Timing of Treatment Initiation and Effect on Facial Synkinesis Outcomes-A Retrospective Study.

Background: While facial neuromuscular retraining and chemodenervation are effective treatments for facial synkinesis, it is unclear if clinical outcomes are affected by the timing or sequence of treatment initiation. Objective: To compare outcomes between patients with facial synkinesis based on timing of treatment initiation with facial neuromuscular retraining and/or chemodenervation as measured by the Sunnybrook Facial Grading System. Methods: Retrospective review of patients with facial synkinesis. Patient data recorded include demographics, clinical information, and Sunnybrook scores. t-Tests, analysis of variance, and logistic regression were used for analysis. Results: A total of 78 adult patients were included in our study (73% female; median age 50 years with a range of 18-78 years). Median patient follow-up was 16 months (range of 1-56 months). Patients were divided into three groups based on time between paralysis onset and treatment initiation: <12 months, 12-36 months, and >36 months. The use of facial neuromuscular retraining and chemodenervation improved Sunnybrook scores for all patients. The time between paralysis onset to treatment initiation was not associated with a difference in Sunnybrook scores. Conclusion: The duration of facial palsy prior to initiation of facial neuromuscular retraining and/or chemodenervation was not associated with a difference in synkinesis outcomes as determined by Sunnybrook scores.

Objective and automated facial palsy grading and outcome assessment after facial palsy reanimation surgery - A prospective observational study.

Facial palsy (FP) is a widespread condition affecting over 3 million people annually, with a complex etiology requiring tailored, multidisciplinary management. Despite advancements, there remains a lack of reliable, automated tools for objective pre- and postoperative assessment, limiting progress in treatment optimization. This study introduces the AI Research Metrics Model (CAARISMA ® ARMM) to evaluate FP severity and outcomes following microsurgical gracilis muscle transfer. We analyzed pre- and postoperative images of 20 FP patients using CAARISMA ® ARMM, which identifies 17 facial landmarks and evaluates 1,030 parameters. CAARISMA ® ARMM calculates three indices: Facial Youthfulness Index (FYI), Facial Aesthetic Index (FAI), and Skin Quality Index (SQI). All surgical procedures were performed by the senior author. Statistical analysis compared preoperative and postoperative scores using independent t-tests and Wilcoxon-Mann-Whitney tests, with significance set at p < 0.05. Significant improvements were observed in the FAI scores post-surgery (p < 0.001). In contrast, FYI and SQI scores did not show significant postoperative changes (p = 0.39 and p = 0.60, respectively). Significant gender differences emerged: females showed increased FYI scores postoperatively, while males exhibited a decline (p = 0.0065). Age-related variations were also significant, with younger patients showing improved SQI and older patients experiencing declines (p = 0.040). The CAARISMA ® ARMM effectively captures aesthetic improvements post-reanimation. Gender and age significantly influence outcomes, underscoring the key role of personalized and adaptable assessment tools. Future studies should integrate dynamic assessments and validate the CAARISMA ® ARMM across additional patient populations. CAARISMA ® ARMM holds promise as a standardized tool in FP outcome evaluation.

AN AYURVEDIC APPROACH TO ARDITA (BELL’S PALSY): A CASE REPORT

Ardita (Bell's palsy) is considered as one of the 80 Vataja Nanatmaja Vyadhis in Ayurvedic classics. In modernday science, it could be correlated with the disorder of Unilateral facial paralysis. Bell’s palsy, additionally termed as Idiopathic facial paralysis (IFP), is the common cause of unilateral facial paralysis. Facial palsy is a neurological ailment wherein the 7th cranial nerve gets affected. The facial nerve conveys sensory and motor fibres with parasympathetic nerve fibres. Damaged facial nerve (VII) consequences are functional loss of facial muscle, resulting in facial impairment. The current study has been performed to discover the effective Ayurvedic management of Bell’s palsy in a 16-year-old male patient who approached Ayurveda Mahavidyalaya and Hospital, Hubballi. He was diagnosed with Ardita (Bell's palsy) – Left-sided Bell's Palsy and managed with Karpasasthyadi taila mukhabhyanga(Facial oil massage),Panasa patra sweda(Jackfruit leaf sudation) followed by nasya(nasal drops) with Ksheera bala taila 101 for 10days and confirmed well-sized development in the signs and symptoms with no adverse effects. The house-Brackmann facial nerve grading system was used for the patient's pre-test and post-test assessment.

Study protocol for a randomized trial comparing two electroacupuncture waveforms for different severity groups of Bell palsy.

Bell palsy (BP) is the most common cause of acute peripheral facial palsy which leads to functional and esthetic disturbances in patients and has a negative influence on daily living. Electroacupuncture (EA) has been considered an alternative treatment for improving facial function in patients with BP. However, there is no agreement on the preferred waveform type of the EA for treating BP. This is a study protocol for a pilot randomized, two-arm, three-center, clinical trial at the Third Affiliated hospital of Zhejiang Chinese Medical University, the First Affiliated hospital of Zhejiang Chinese Medical University, and the Hangzhou First People's Hospital. The trial began in November 2023 and is expected to end in December 2025. Sixty patients with BP whose electroneurography (ENoG) value is at least 20% and 60 patients with BP whose ENoG value is less than 20% will be randomly assigned to the low frequency continuous waveform group or the intermittent waveform group in a 1:1 ratio. Participants will receive 4 weeks of EA treatment and clinical assessments. The primary outcome is the change from baseline score of the Facial Nerve Grading System 2.0. The secondary outcomes include the change from baseline score of the Sunnybrook grading scale and the change from baseline amplitude of the compound muscle action potential of the affected side in the ENoG tests. This is the first study protocol to compare the treatment effect and safety of EA with low frequency continuous waveform and intermittent waveform for different severity groups of BP. This study will contribute to subsequent studies for exploring optimal EA parameters for BP treatment. ClinicalTrials.gov, NCT06063954.

Efficacy of electrical stimulation of the zygomaticus muscle in complete facial paralysis: evidence from facial grading and automated image analysis.

Surface Functional Electrical Stimulation (FES) is a well-studied intervention for multiple muscular disorders. However, it is still controversially discussed as a complementary therapy for complete facial paralysis. The aim of this intervention is to test a daily home-based ES concept as a pilot study regarding safety, feasibility, and effects on facial functionality and symmetry. In a prospective single-centre pilot study, 10 patients (median 61 years, denervation 130 d) with complete peripheral facial paralysis performed home-based FES of the affected lateral mouth region Stimulation parameters, facial paralysis scores and standardised photographs were assessed in monthly follow-ups. No serious adverse events appeared. Stimulation parameters could be constantly increased indicating effective muscle training while subjectively perceived functionality of the face improved. Thus, smile angle of the paralysed side improved as well. FES is a safe therapy model for application in facial nerve paralysis patients. A feasible stimulation protocol could be applied, which improved the functionality and symmetry of the stimulated facial region. A future controlled, randomised and double-blind follow-up study is needed to investigate these initial results in a further evolved replicable setting.

Laser therapy for Bell's palsy: a systematic review and meta-analysis of randomized trials.

This meta-analysis investigated therapeautic effects of laser therapies in patients with Bell's palsy (BP). The authors performed the literature search in the PubMed, Embase, and Cochrane Library databases using the following search terms: (facial paralysis OR Bell's palsy OR facial palsy OR idiopathic facial paralysis) AND (laser OR low-level laser OR photobiomodulation OR phototherapy). Relevant studies published before October 29th 2024 were identified. Randomized trials comparing the outcomes of laser therapies with other interventions, including electrical stimulation and control or usual care in patients with BP were included. The mean difference (MD) was determined as the effect size for continuous outcomes, and outcome accuracy was determined using 95% confidence intervals (CIs). Twelve studies were included, with a total of 597 patients. Nine studies were further included in the quantitative analysis. Our meta-analysis revealed that laser therapy significantly improved disease severity (House-Brackmann facial paralysis scale) (MD = -1.51, 95% CI = -2.43 to -0.59), facial asymmetry (Sunnybrook facial grading system) (MD = 20.63, 95% CI = 10.33 to 30.94), and facial function and disability (Facial disability index) (MD = 17.91, 95% CI = 5.60 to 30.22) when compared with control care in adult patients. Moreover, laser therapy significantly improved facial severity (MD = 21.05, 95% CI = 16.77 to 25.33) when compared with electrical stimulation. In addition, no adverse effects of laser therapy were reported. Laser therapy has favorable effects on disease severity, facial asymmetry, and facial function and disability for patients with BP.

Effectiveness of Kabat Technique versus Mirror Book Therapy on clinical and electrophysiological parameters in patients with Bell’s palsy: a comparative interventional study

BackgroundBell’s palsy significantly impacts facial function, aesthetics, and quality of life.ObjectiveTo compare the effects of the Kabat Technique (KT) and Mirror Book Therapy (MBT) on clinical and electrophysiological parameters in patients with Bell’s palsy.MethodsThis randomized controlled trial included 31 patients divided into two groups: KT (n = 16) and MBT (n = 15). Both groups received their respective interventions (6 days/week for 3 weeks) in addition to conventional physiotherapy. Sunnybrook Facial Grading Score and Nerve Conduction Test (amplitude and latency of frontalis, nasalis, and mentalis muscles) were assessed pre- and post-intervention.ResultsStatistical analysis (SPSS v20) revealed significant intragroup improvements in all outcome measures (p < 0.05). Intergroup comparison showed MBT had superior improvements in amplitude of frontalis and reduced latency of nasalis. Both groups demonstrated significant improvement in the Sunnybrook grade shift.ConclusionThis study suggests that KT and MBT, combined with conventional physiotherapy, positively impact clinical and electrophysiological parameters in Bell's Palsy patients. MBT showed superior results in select Nerve Conduction Test parameters.

Facial Nerve Reanimation Using Free-functioning Gracilis Muscle Transfer in Adolescent Patients. Long-term Follow-up With Outcome Assessment Using House-Brackmann Facial Nerve Grading System.

Facial nerve palsy is a condition that carries significant consequences, especially when it occurs during adolescence. It represents a considerable clinical problem due to limited treatment options, as well as the fact that it has significant cosmetic and functional implications. In adolescents with persistent facial palsy, microsurgical procedures for dynamic facial reanimation may effectively restore facial symmetry. A commonly performed intervention is free-functioning muscle transfer. The study group includes 10 pediatric patients aged 11 to 17 with diagnosed persistent facial nerve palsy, surgically treated for the restoration of mimic muscle function between 2018 and 2022. All patients included in the study underwent surgical treatment using free-functioning muscle transfer. The average observation period was 38 months (range: 21-54mo). To objectively assess the return of function of the transferred innervated muscle flap during treatment and postoperative recovery, the House-Brackmann Facial Nerve Grading System was used. At an average observation period of 38 months, at least grade 3 according to the HBGS scoring system was demonstrated in all cases. Twelve months after the procedure, 6 patients (60%) were classified as grade 3, and in 4 cases (40%), the achieved symmetry was sufficient to obtain grade 2. No patient reported limitations in the adduction of the lower limb resulting from the harvest of the gracillis muscle. Further research should focus on patient-reported outcomes, conducting studies on a large study group could lead to the development of a clinical algorithm that could facilitate the assessment and effectively assist in the treatment of facial palsy.

La critique d’un outil d’intelligence artificielle dans l’évaluation des paralysies faciales périphériques

Peripheral facial palsy (PFP) is an alteration in the functioning of some facial muscles following an injury to the facial nerve. This pathology has functional and aesthetic consequences that impact the quality of life of patients. Their care is essential and begins with an accurate assessment. Currently, scoring scales such as Sunnybrook Facial Grading System (SFGS) or House-Brackmann Grading System (HBGS) are used, based on clinician judgment. However, these evaluation methods can be subject to a certain degree of subjectivity. Recent advances in technology have led to increased interest in artificial intelligence (AI). AI could make it possible to develop an objective, automated and quantitative assessment tool, applicable in a clinical setting. This approach aims to reduce the subjectivity induced by current evaluation. We conducted a retrospective study of 38 patients with moderate-severe to total PFPs. The objective of the study is to identify the benefits and limitations of Emotrics+, a facial metrics tool based on AI, in order to determine whether the tool is applicable in the clinic. This protocol took place at two different time periods (14days and 1year post-PFP) using the SFGS scale and the Emotrics+ software. We evaluated the inter-rater and intra-rater reliability in order to determine the reliability and the reproducibility of the two tools. Then, we established a correlation between the two tools to determine if Emotrics+ followed SFGS's trend. Our currents results do not support the immediate applicability of this software. However, with appropriates adjustments, Emotrics+ has a certain potential.

Compare the Effectiveness of Mime Therapy on Facial Synkinesis in Idiopathic and Traumatic Lower Motor Neuron Facial Palsy

Background: The seventh cranial nerve has a core function of regulating emotional displays and speech. Facial paralysis, characterized by the loss of voluntary motor control on one or both sides, is commonly attributed to Bell’s palsy which accounts for 50-75% of cases and trauma responsible for 10-23% of cases. Various rehabilitation methods, including Mime Therapy, are employed to enhance facial muscle function. Objective: This study aims to compare Mime Therapy's impact to reduce the synkinesis of a face in individuals with idiopathic and traumatic lower motor neuron facial nerve palsy. Study Design: Experimental, Comparative Study Study Setting: Physiotherapy OPD, Neurology ward, and ENT ward of Himalayan Hospital, Dehradun Participant: This study involved 30 patients, with 20 in Group A (Idiopathic) and 10 in Group B (Traumatic), all of whom had House-Brackmann Scores of 3-5. The patient’s ages ranged from 20 to 70. Outcome Measure: Two outcome measures were used: House Brackmann Score and Sunnybrook Facial Grading System. Result: A noticeable difference in both outcome measures was observed. In the House Brackmann Score for group A (p-value &lt;0.001) and B (p-value=0.016), In Sunnybrook Facial Grading System for group A (p-value&lt;0.001) and B (p-value=0.002). However, when comparing the post-intervention results of both groups, no distinct variation was found in the outcome variables (p-value&gt;0.05). Conclusion: The study provides evidence demonstrating that Mime Therapy has been successful in effectively reducing Facial Synkinesis in patients with both idiopathic and traumatic LMN Facial Palsy. The results indicate a significant improvement in the condition, suggesting that Mime therapy can be an efficacious treatment approach for this type of facial paralysis. KEYWORDS: Mime Therapy, Facial Synkinesis, Idiopathic LMN Facial palsy, Traumatic LMN facial palsy, Bell’s palsy.

Creation and Validation of the Facial Diplegia Scale for Assessment of Bilateral Facial Palsy.

Objectives: House-Brackmann (HB) classification and the Sunnybrook Facial Grading System (SFGS), both reference tools for the assessment of facial palsy, are not suitable for bilateral facial palsy. The aim of this study was to develop, standardize, and validate the Facial Diplegia Scale (FDS). Methods: The FDS was standardized in a healthy population (n = 111) and validated in 40 patients with diplegia. Correlations with the SFGS were sought to prove its criterion validity. The comparison between healthy subjects and patients with diplegia was used to test the construct validity. The diagnostic performance of the FDS was verified using an ROC curve based on the HB classification. Internal and external consistency were investigated. Results: The FDS and the SFGS were significantly correlated for the right hemiface [F(39) = 51.51, p < 0.0001, R2 = 0.575] as well as for the left one [F(39) = 95.10, p < 0.0001, R2 = 0.714]. A significant difference between control subjects and patients with diplegia was found [t(149) = -9.95, p < 0.0001]. Good specificity and sensitivity were confirmed. Finally, internal consistency, inter-rater reliability, and test-retest reliability were largely proven. Conclusions: The FDS has been standardized and validated for the subjective assessment of facial diplegia in adults to improve comprehensive assessment.

Functional Outcomes and Self-Reported Quality of Life in Patients with Facial Nerve Impairment Following Vestibular Schwannoma Surgery.

The aim of this observational retrospective study was to report quality of life (QoL) in patients with postoperative facial nerve (FN) palsy after vestibular schwannoma (VS) surgery, investigating clinical factors related to functional outcomes. Forty-eight consecutive patients (M:F 25:23; median age: 52.5 years) with facial palsy following surgery for sporadic VS were considered retrospectively. FN palsy was graded by using the Sunnybrook facial grading system (SBFGS), while postoperative QoL and subjective functional aspects were assessed by using the Penn Acoustic Neuroma Quality of Life (PANQOL) Scale, the Synkinesis Assessment Questionnaire, and questions on eating and drinking. A significant correlation emerged between all Sunnybrook scores and median PANQOL domain regarding facial function. Increasing overall SBFGS scores were associated with reduced risk of slow chewing on the affected side (p = 0.004), lack of masticatory strength (p = 0.025), masticatory fatigue (p < 0.001), accumulation of food in the oral vestibule (p < 0.001), difficulty in drinking from a glass (p = 0.019), and fluid spillage while drinking (p = 0.016). This study suggests that the clinical evaluation of patients with FN palsy after VS surgery should be integrated with patient reports about functional outcomes and perceived QoL to help clinicians guide rehabilitation choices.

A longitudinal study of facial function, quality of life, and depression in Bell’s palsy during pregnancy and puerperium

Bell’s palsy can reduce facial function and quality of life. Pregnancy may also be physically and psychologically challenging. This study investigates depression among pregnant and puerperal women with and without Bell’s palsy and if degree of facial palsy and depression was correlated. Thirty-one women with pregnancy-associated Bell’s and 31 women without Bell’s palsy were prospectively included and followed one year at two University Hospitals, Stockholm. Depression was assessed with Edinburgh Postnatal Depression Scale (EPDS). In women with Bell’s palsy, Facial Disability Index (FDI), Facial Clinimetric Evaluation (FaCE) scale, and Sunnybrook Facial Grading System (SFGS) were collected. The association between Bell’s palsy and EPDS ≥ 11 was assessed by logistic regression, and between EPDS and FDI, FaCE, and SFGS, respectively, by Spearman rank correlation. Median EDPS did not differ between groups (7.0 vs. 6.0, p = 0.74, one month, 6.5 vs. 6.0, p = 0.87, 12 months). EPDS at one month was correlated to FDI (p = 0.002) and FaCE (p = 0.004) and at 12 months to FDI (p = 0.009) but not to FaCE (p = 0.08). No correlation was found between EPDS and SFGS. In summary, no association appeared between pregnancy-associated Bell’s palsy and depression. Patient-reported function correlated well with depression in pregnancy-associated Bell’s palsy, while physician-reported facial function did not.

Effects of Kabat rehabilitation versus mime therapy on facial disability and synkinesis in patients of Bell's palsy.

To compare the effects of Kabat rehabilitation and Mime therapy on facial disability and synkinesis in patients with Bell's palsy. The single-blind, randomised clinical trial was conducted at the Physiotherapy Department of the University of Lahore Teaching Hospital, Lahore, Pakistan, from May to October 2023, and comprised adults of either gender aged 25-50 years having sub-acute or chronic unilateral Bell's palsy of non-congenital origin. The patients were randomised into Kabat rehabilitation group A and mime therapy group B. Conventional physical therapy was given to both groups additionally. Facial disability was assessed using the Facial Disability Index scale, and synkinesis was observed using the House-Brackmann Facial Nerve Grading Scale. Data was analysed using SPSS 25. Of the 72 patients, 41(56.9%) were females and 31(43.1%) were males. The overall mean age was 37.77±6.98 years, mean body mass index was 25.71±5.71kg/m2 and 41(56.9%) patients had left-sided palsy. Facial disability and synkinesis were significantly different in both groups post-intervention (p<0.001), while intergroup differences were significant in the 3rd and 6th weeks (p<0.001). Kabat rehabilitation led to more significant improvements in synkinesis and facial disability compared to mime therapy. Clinical trials.gov registration id: NCT06029855.

The Systemic Inflammatory Response Index as a Novel Diagnostic Indicator for Bell's Palsy.

Aims/Background The systemic inflammatory response index (SIRI), an emerging hematological marker of inflammation, has shown promise as a promising biomarker for a variety of inflammatory conditions. This study aims to explore the diagnostic role of SIRI in Bell's palsy (BP). Methods For this retrospective study, 73 people diagnosed with BP between January 2021 and December 2023 were recruited, along with 73 healthy controls who were age- and sex-matched. The SIRI and other blood inflammatory markers, including the systemic immune-inflammation index (SII), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR), were determined for all participants, by enumerating their peripheral blood cell counts. Facial nerve function was assessed upon admission and after one month of treatment using the House-Brackmann Facial Nerve Grading System (H-B). According to this system, patients with an H-B grade of 1-2 are considered recovered, while those with an H-B grade of 3-6 are regarded as not recovered. Results The SIRI (0.94 vs 0.48, p < 0.001), SII (480.3 vs 329.12, p < 0.001), NLR (2.42 vs 1.41, p < 0.001), and PLR (141.05 vs 117.28, p = 0.001) showed a significant increase in the BP group compared to the control group. The receiver operating characteristic (ROC) curve analysis revealed that the area under the curve (AUC) for SIRI was higher than those for SII, NLR, and PLR, respectively. Upon one-month follow-up, significant differences in the values of SIRI, SII, and NLR were observed between the favorable prognosis group and the poor prognosis group (SIRI: 1.07 vs 0.87, p = 0.011; SII: 647.85 vs 422.11, p = 0.005; NLR: 3.31 vs 2.11, p = 0.013). The AUC of ROC curve for SIRI was found to be lower than that of SII but higher than that of NLR. Conclusion The SIRI has the potential to be an important BP diagnostic and prognostic marker.

Motor unit number index in Bell's palsy: A potential electrophysiological biomarker for early evaluation.

Reliable, noninvasive early diagnostics of neuromuscular function in Bell's palsy, which causes facial paralysis and reduced quality of life, remain to be established. Here, we aimed to evaluate the utility of the motor unit number index (MUNIX) for the quantitative electrophysiological assessment of early-stage Bell's palsy, its correlation with clinical assessments, changes following treatment, and association with clinical prognosis. MUNIX measures were recorded from the bilateral zygomaticus, orbicularis oculi, and orbicularis oris muscles of 10 healthy individuals and 64 patients with Bell's palsy. The patients were assessed by two specialist neurologists using the House-Brackmann and Sunnybrook Facial Grading Systems. Repeat assessments were performed on 20 patients with Bell's palsy who received treatment. Additionally, the 64 patients were reassessed using clinical scales after a 1-month interval. The MUNIX values of the main affected muscles on the affected side were lower than those on the healthy side in patients with Bell's palsy (p<.05). The MUNIX measurements significantly correlated with the clinical facial nerve palsy scale scores (p<.05). Significant improvements were observed in the MUNIX values on repeat testing following treatment (p<.05). The baseline motor unit size index (the compound muscle action potential amplitude divided by MUNIX) was positively associated with improved clinical presentation after 1 month (p<.05). MUNIX can be used as an electrophysiological biomarker for the quantitative assessment of facial nerve palsy and treatment response, and as a prognostic biomarker, in patients with early Bell's palsy, and is recommended as a complement to conventional neurophysiological examinations.

Normal Facial Function in the Sunnybrook Facial Grading System: Is the 100% Score too Restrictive?

The primary objective of this study was to describe the distribution of the Sunnybrook Facial Grading System scores in the general population. Secondary objectives included analyzing the effects of age, gender and facial side on these scores. Two speech therapists specializing in facial motor skill assessment evaluated the healthy participants using the Sunnybrook Facial Grading System, first with the right hemiface as a reference and then with the left hemiface as a reference. The study was conducted in our ENT department from September 2022 to June 2023. One hundred eleven healthy participants were included (57 women and 54 men), aged 18 to 79 years. SFGS composite scores (SFGS-Total) and sub-scores at rest (SFGS-Rest) and in movement (SFGS-Movement) were studied according to three age categories (18-39 years) (40-59 years) and (60-79 years) and gender. Inter-rater reliability was collected between the two evaluators with Cronbach's alpha. Taking the right hemiface as a reference, SFGS-Total scores ranged from 65% to 100% (median = 96, IQR [91-100]). When the left hemiface was considered as the reference, scores ranged from 78% to 100% (median = 95; IQR [90-100]). Right and left SFGS-Total scores showed high inter-rater reliability (respectively α = 0.953 and α = 0.926). There was a slight negative correlation between age and SFGS-Total scores. By embracing a more realistic approach that acknowledges natural variations and asymmetry in facial movements, we can enhance patient care and promote a more holistic understanding of facial rehabilitation outcomes.

Clinical observation on acupuncture at infusion points of "four seas" on refractory peripheral facial paralysis

To observe the clinical effect of acupuncture at the infusion points of "four seas" for refractory peripheral facial paralysis on the basis of conventional acupuncture. A total of 52 patients with refractory peripheral facial paralysis were randomized into an observation group (26 cases, 2 cases dropped out) and a control group (26 cases, 1 case dropped out). On the basis of conventional acupuncture (Yintang [GV 24+] and Yangbai [GB 14], Dicang [ST 4] at affected side, etc.), acupuncture at the infusion points of "four seas", i.e. Baihui (GV 20), Dazhui (GV 14) and bilateral Shangjuxu (ST 37), Xiajuxu (ST 39), Zusanli (ST 36), was delivered in the observation group. On the basis of conventional acupuncture, shallow acupuncture was applied at corresponding non-meridian and non-acupoint points of the infusion points of "four seas" in the control group. The needles were maintained for 30 min, the treatment was given once every other day, 3 times a week for 4 weeks in the two groups. Before and after treatment, the House-Brackmann (H-B) facial nerve grading and the dynamic view score of the facial nerve function scoring system were observed, and the clinical efficacy was evaluated after treatment in the two groups. After treatment, the H-B facial nerve grading was improved compared with that before treatment in the two groups (P<0.05), and the grading in the observation group was superior to that in the control group (P<0.05); the dynamic view scores of the facial nerve function scoring system were increased compared with those before treatment in the two groups (P<0.05), and the score in the observation group was higher than that in the control group (P<0.05). The total effective rate was 91.7% (22/24) in the observation group, and that in the control group was 84.0% (21/25), there was no significant difference in the total effective rate between the two groups (P>0.05). The cure rate was 62.5% (15/24) in the observation group, which was higher than 20.0% (5/25) in the control group (P<0.05). On the basis of conventional acupuncture, acupuncture at infusion points of "four seas" can effectively treat refractory peripheral facial paralysis, improve the facial nerve function and increase the cure rate.