Trismus, health-related quality of life, and trismus-related symptoms up to 5 years post-radiotherapy for head and neck cancer treated between 2007 and 2012.

PURPOSE: Radiotherapy-induced trismus is present in up to 40% of patients treated radiotherapeutically for head and neck cancer (HNC) and impacts health-related quality of life (HRQL) negatively. This prospective study aimed to investigate the development of trismus and its influence on HRQL and trismus-related symptoms in HNC patients for up to 5 years post-radiotherapy completion as no such follow-up studies exist. METHODS: Patients (n = 211) were followed prospectively from pre-radiotherapy to 12 and 60 months post-radiotherapy. At each follow-up, maximum interincisal opening (MIO) was measured, and patients filled in the European Organization for Treatment of Cancer Quality-of-Life Questionnaire Core-30 (EORTC QLQ-C30), Head and Neck-35 (EORTC QLQ-HN35), and Gothenburg Trismus Questionnaire (GTQ). Trismus was defined as an MIO ≤ 35 mm. RESULTS: At 1 year post-radiotherapy, a total of 27% met the trismus criterion, and at 5 years post-radiotherapy, the corresponding figure was 28%. Patients in the trismus group scored significantly worse compared to the patients without trismus on 8/15 domains at 1 year post-radiotherapy on EORTC QLQ-C30, further worsening in 11/15 domains at 5 years post-radiotherapy. Similar results were found for EORTC QLQ-HN35. Patients with trismus reported more trismus-related symptoms according to the GTQ at both timepoints compared to those without trismus. CONCLUSION: This study highlights that HNC patients suffering from radiotherapy-induced trismus report poorer HRQL and more trismus-specific symptoms compared to patients without trismus. These differences persist and increase up to at least 5 years following treatment completion. Hence, our results highlight that radiotherapy-induced trismus affects long-term HRQL, jaw symptoms, and pain, further stressing the need for early and structured intervention.

Facial pain, health-related quality of life and trismus-related symptoms up to 5 years post-radiotherapy for head and neck cancer.

PURPOSE: Pain is a frequent symptom of head and neck cancer (HNC) but longitudinal studies investigating facial pain are scarce. We aimed to investigate prevalence of facial pain, its effect on health-related quality of life (HRQL) and trismus-related symptoms in a HNC cohort. METHODS: Patients (n = 194) were prospectively followed post completion of radiotherapy (RT). Outcome measures included facial pain, HRQL, trismus-specific symptoms, and maximal interincisal opening (MIO). RESULTS: Facial pain was reported by 50% at baseline. Corresponding figures for 3-, 12-, and 60 months post-RT were 70%, 54% and 41%. Moderate to severe pain was reported in 29-44% of patients reporting pain during the study period. Patients reporting pain scored significantly worse on more HRQL variables and trismus symptoms, as well as had significantly smaller MIO at all follow-up time points. CONCLUSIONS: Facial pain was common in HNC patients pre- and post-RT and remained prevalent up to 5 years after completion of RT. Reductions in MIO were associated with more facial pain. Pain was also associated with worse HRQL.

Hemoglobin-to-platelet ratio in predicting the incidence of trismus after concurrent chemoradiotherapy.

OBJECTIVE: The significance of pre-hemoglobin-to-platelet ratio (HPR) in predicting the occurrence of radiation-induced trismus (RIT) in locally advanced nasopharyngeal carcinoma patients (LA-NPC) who received concurrent chemoradiotherapy (C-CRT). METHODS: The records of LA-NPC patients with oral examination before and after C-CRT were analyzed. Maximum mouth openings (MMO) were measured before and after C-CRT to confirm RIT status, with an MMO of ≤35 mm defined as RIT. HPR values were calculated on the first day of C-CRT. The relationship between the HPR values and RIT status was discovered using the receiver operating characteristic curve analysis. RESULTS: A total of 43 patients RIT cases among 198 individuals were diagnosed. The optimal HPR cutoff that stratified the patients into two groups was 0.54. RIT incidence was found to be significantly higher in the HPR ≤0.54 group than its HPR >0.54 counterpart(p < 0.001). Univariately T3-4 stage, mean masticator apparatus dose>57.2Gy, and pre-C-CRT MMO ≤40.7 mm were found as the other significant correlates of increased RIT rates(p < 0.05). All four variables seemed to be independently connected to greater RIT incidence in multivariate analysis (p < 0.05, for each). CONCLUSION: The risk of post-C-CRT RIT may be significantly increased when pre-treatment HPR levels are low.

Dysphagia, trismus and speech impairment following radiation-based treatment for advanced stage oropharyngeal carcinoma: a one-year prospective evaluation.

OBJECTIVE: The objective was to assess swallowing, mouth opening and speech function during the first year after radiation-based treatment (RT(+)) after introduction of a dedicated preventive rehabilitation program for stage III-IV oropharyngeal carcinoma (OPC). METHODS: Swallowing, mouth opening and speech function were collected before and at six- and twelve-month follow-up after RT(+) for OPC as part of ongoing prospective assessments by speech-language pathologists . RESULTS: Objective and patient-perceived function deteriorated until 6 months and improved until 12 months after treatment, but did not return to baseline levels with 25%, 20% and 58% of the patients with objective dysphagia, trismus and speech problems, respectively. Feeding tube dependency and pneumonia prevalence was low. CONCLUSION: Despite successful implementation, a substantial proportion of patients still experience functional limitations after RT(+) for OPC, suggesting room for improvement of the current rehabilitation program. Pretreatment sarcopenia seems associated with worse functional outcomes and might be a relevant new target for rehabilitation strategies.

Self-Reported Trismus: prevalence, severity and impact on quality of life in oropharyngeal cancer survivorship: a cross-sectional survey report from a comprehensive cancer center.

OBJECTIVE: The purpose of this study was to estimate prevalence/severity of self-reported trismus, determine association with quality of life (QOL), and examine clinical risk factors in a large population of patients treated for oropharyngeal cancer. MATERIALS AND METHODS: A cross-sectional survivorship survey was conducted among patients who completed definitive treatment for oropharyngeal carcinoma, disease-free ≥ 1-year post-treatment (median survival, 7 years among 892 survivors). Associations between trismus and QOL were also analyzed using MDASI-HN, EQ-5D, and MDADI. Dietary and feeding tube status were also correlated to trismus status. RESULTS: Trismus was self-reported in 31%. Severity of trismus positively correlated (r = 0.29) with higher mean interference scores reflecting a moderate association with quality of life (p < 0.0001). There was a negative correlation for MDADI composite scores (r = - 0.33) indicating increased perceived dysphagia related to trismus severity (p < 0.0001). EQ-5D VAS scores were also negatively correlated with trismus severity (r = - 0.26, p < 0.0001). Larger T-stage (p ≤ 0.001), larger nodal stage (p = 0.03), tumor sub-site (p = 0.05), and concurrent chemoradiation (p = 0.01) associated with increased prevalence of trismus. Diet negatively correlated (r = - 0.27) with trismus severity (p = < 0.0001), and survivors with severe trismus were also more likely to be feeding tube-dependent. CONCLUSION: Severity of trismus appears to negatively impact quality of life and associate with various adverse functional outcomes in long-term oropharyngeal cancer survivorship. Trismus remains associated with advanced disease stages, tumor sub-site (tonsil), and addition of chemotherapy. Further investigation is merited for the dose-effect relationship to the muscles of mastication.

Comparison of postoperative morbidity between piezoelectric surgery and conventional rotary instruments in mandibular third molar surgery: a split-mouth clinical study.

BACKGROUND: The extraction of impacted third molar teeth is a common procedure in maxillofacial surgery. The aim of this study was to compare of piezoelectric surgical technique with the one with conventional rotary instruments in terms of edema, trismus and pain, in mandibular third molar surgery. MATERIAL AND METHODS: 20 individuals with symmetrically impacted lower mandibular third molars and 40 teeth were included in the study. Third molars on the left side of each patient were removed with piezosurgery, while the counterparts on the right side were removed with conventional rotary instruments. Postoperatively, the same antibiotic, analgesic, and mouthwash were recommended to both groups. Ultrasound, edema, trismus measurements were performed before surgery, postoperative, postoperative day 2 and postoperative day 7. VAS scale was used to evaluate the pain. RESULTS: The average age of 20 individuals included in the study was found to be 21.85 ± 3.08 years. The operation time of the individuals who underwent the surgery with conventional rotary instruments was found to be 12 minutes 31.70 ± 167.03 seconds, and the operation time in the Piezosurgery group was 19 minutes 10.60 ± 306.59 seconds. There was no significant difference between the two groups in terms of trismus, edema, and pain. CONCLUSIONS: Piezosurgery is a safe method that can be used in molar removal, but in this split-mouth study, it is not found advantageous in terms of postoperative morbidity due to the longer working time compared to the one performed with conventional rotary instruments.

The prevalence of patient-reported dysphagia and oral complications in cancer patients.

PURPOSE: Research investigating swallowing problems (dysphagia) and complications within the oral cavity in non-head and neck cancer patients is limited. The purpose of this study was to determine the prevalence of patient-reported dysphagia and oral complications in all cancer patients and to examine the relationships between cancer types, oral complications and dysphagia. METHODS: A cross-sectional study was conducted at a specialist cancer centre in Australia. Data on patient-reported dysphagia and oral complications were collected using the Vanderbilt Head and Neck Symptom Survey (version 2.0) which was completed by participants in one of three settings: inpatients, ambulatory patients receiving chemotherapy, or ambulatory patients receiving radiotherapy. RESULTS: Data were collected on 239 patients, receiving treatment for 14 cancer types. The proportion of patients who reported dysphagic symptoms were as follows: any dysphagia (54%); dysphagia for liquids (20%); and dysphagia for solids (46%). Significantly more head and neck patients and significantly fewer breast patients reported dysphagia, but there were no differences between other tumour types. Oral symptoms across all cancer types were reported at the following rates: taste changes (62%); xerostomia (56%); voice changes (37%); smell changes (35%); thick mucous (33%); difficulty with teeth/dentures (25%); mouth/throat pain (20%); and trismus (19%). CONCLUSIONS: This is the first time comprehensive data on dysphagia and oral complications across all cancer patients have been collected. We have identified that dysphagic symptoms and oral complications-which have implications for quality of life and function-are common in all cancer patients, not just those with head and neck cancer.

The effect of kinesio taping with the web strip technique on pain, edema, and trismus after impacted mandibular third molar surgery.

BACKGOUND: There are many methods used to alleviate edema, trismus, and pain after impacted third molar (3M) removal, one of which is Kinesio Taping (KT). AIMS: This study aimed to evaluate the effectiveness of Kinesio Taping with Web Strip technique on postoperative morbidity after impacted mandibular 3M extraction. METHODS: The study employed a split-mouth and controlled randomized clinical trial design. A total of 60 patients were scheduled for surgical extractions of bilateral lower 3Ms. They were randomly divided into two groups, and KT was applied to one group while the others was determined as a control group without KT application. Tape was applied directly after surgery and maintained for postoperative (post-op) 7 days. Pain intensity was recorded subjectively using a Visual Analogue Scale (VAS). Pain and analgesic usage were recorded on the post-op 1st, 2nd, 3rd, and 7th days. Trismus was evaluated before the surgery and on the post-op 2nd and 7th days. Facial edema was analyzed on the post-op 2nd and 7th days by VAS and by measuring the lengths of three lines using a flexible plastic tape measure. RESULTS: VAS pain scores were statistically lower in the KT group on the post-op 1st, 3rd and 7th days. Total analgesic usage was also significantly lower in the KT group. On the post-op 2nd day, measurement of the lengths of three lines showed a statistically less edema in the KT group. Similar results were obtained from the measurement of edema using VAS. Maximum mouth opening was statistically higher in the KT group on the post-op 2nd and 7th day. CONCLUSION: KT with the web strip technique should be considered more economic and less traumatic than other approaches, as it is free from systemic side effects and is a simple method to carry out to decrease morbidity.

Evaluation of the effects of the surgical removal of impacted third molars on the emotional state of individuals with Beck depression inventory.

AIMS: In this study, using Beck depression inventory (BDI), we aimed to determine alterations in the emotional state of patients who had impacted third molars (M3) extracted owing to postoperative pain, edema, and trismus.In this prospective clinical trial, which was conducted at Tokat Gaziosmanpasa University, Faculty of Dentistry, Department of Maxillofacial Surgery Clinic, we studied 60 patients (30 males and 30 females), who were 18-47 years old (the mean of 25.6 years of age). The patients with M3 with moderate preoperative pain intensities, edema, and maximal mouth opening (MMO) data were recorded, and BDI was applied to determine their emotional states. The patients were re-evaluated using BDI to detect alterations in their emotional state owing to pain intensity, edema, and trismus on postoperative second and seventh day. SUBJECTS AND METHODS: Descriptive statistical analysis, Chi-square, and independent t-test were utilized to interpret the obtained data. RESULTS: According to our findings, a statistically significant relationship was observed between BDI scores and gender on the second postoperative day (P = 0.004), and between MMO and BDI scores on the second and seventh postoperative day (P = 0.012, P = 0.045). Pain intensity scores on the postoperative sixth hour and seventh day were significantly correlated with BDI scores on the postoperative second and seventh day (P = 0.000/ P = 0.000/P = 0.002/P = 0.004/P = 0.010/P = 0.017/P = 0.001/P = 0.000). CONCLUSIONS: Our results suggest that the pain and trismus owing to the M3 surgery were significantly correlated with an increase in the postoperative BDI scores.

Temporal patterns of patient-reported trismus and associated mouth-opening distances in radiotherapy for head and neck cancer: A prospective cohort study.

OBJECTIVES: To identify temporal patterns of patient-reported trismus during the first year post-radiotherapy, and to study their associations with maximal interincisal opening distances (MIOs). DESIGN: Single institution case series. SETTING: University hospital ENT clinic. PARTICIPANTS: One hundred and ninety-six subjects who received radiotherapy (RT) for head and neck cancer (HNC) with or without chemotherapy in 2007-2012 to a total dose of 64.6/68 Gy in 38/34 fractions, respectively. All subjects were prospectively assessed for mouth-opening ability (Gothenburg Trismus Questionnaire (GTQ), European Organization for Research and Treatment of Cancer quality of life Questionnaire (EORTC QLQ-H&N35), and MIO) pre-RT and at 3, 6 and 12 months after RT. MAIN OUTCOME MEASURES: Correlations between temporally robust GTQ symptoms and MIO as given by Pearson's correlation coefficients (Pr ); temporally robust GTQ-symptom domains as given by factor analysis; rates of trismus with respect to baseline by risk ratios (RRs). RESULTS: Four temporally robust domains were identified: Eating (3-7 symptoms), Jaw (3-7), Pain (2-5) and Quality of Life (QoL, 2-5), and included 2-3 persistent symptoms across all post-RT assessments. The median RR for a moderate/severe (>2/>3) cut-off was the highest for Jaw (3.7/3.6) and QoL (3.2/2.9). The median Pr between temporally robust symptoms and MIO post-radiotherapy was 0.25-0.35/0.34-0.43/0.24-0.31/0.34-0.50 for Eating/Jaw/Pain/QoL, respectively. CONCLUSIONS: Mouth-opening distances in patients with HNC post-RT can be understood in terms of associated patient-reported outcomes on trismus-related difficulties. Our data suggest that a reduction in MIO can be expected as patients communicate their mouth-opening status to interfere with private/social life, a clinical warning signal for emerging or worsening trismus as patients are being followed after RT.

An evaluation of effects of platelet-rich-fibrin on postoperative morbidities after lower third molar surgery.

OBJECTIVES: The aim of the present study was to assess whether the use of platelet-rich fibrin (PRF) decreased the pain, swelling, and trismus levels of postoperative third molar surgery. MATERIALS AND METHODS: In a double-blinded, split-mouth randomized study, thirty patients (6 male/24 female, mean age 20.32 years) with bilateral symmetric impacted third molars were enrolled in this study to receive surgery. The PRF mass was randomly placed in one of the extraction sockets, whereas the other socket was left without treatment. The outcome variables were pain, maximum mouth opening (trismus), swelling (edema), and the presence of dry socket which were measured using a 10-point visual analog scale, manual calipers, and 3dMD facial imaging system which was used for the 1st time in the third molar surgery. RESULTS: Statistical analyses revealed that there were no significant differences between the control and study groups regarding postoperative pain, swelling, and trismus (P > 0.05). CONCLUSION: The results of this study suggest that PRF was not observed to have a positive effect on postoperative discomfort, so even though, PRF is presumed to have positive effects on healing and recovery processes.

The efficacy of hyaluronic acid in postextraction sockets of impacted third molars: A pilot study.

OBJECTIVE: This study aims to evaluate the effectiveness of local hyaluronic acid (HA) administration to surgically remove impacted third molar sockets and measure pain, swelling, and trismus. MATERIALS AND METHODS: The study included a total of 25 healthy patients aged 18-29 years with asymptomatic bilaterally impacted lower third molars. All cases have been performed under local anesthesia. In the study group, 0.8% HA (Gengigel®) was applied in the postextraction sockets of the right third molars and in the control group nothing was applied to the extraction sockets of the left third molars. Postoperative pain, trismus, and swelling were evaluated on the 1st, 3rd, and 7th postoperative days. RESULTS: No difference was determined between groups in facial swelling and maximum mouth opening. However, the amount of pain significantly reduced in HA groups according to visual analog scale (P = 0.001). CONCLUSION: The results of this study showed that HA can produce an analgesic action in postextraction sockets after surgical removal of impacted teeth and therefore it has a clinical benefit to reduce usage of nonsteroidal anti-inflammatory drugs after dentoalveolar surgery.

Dose-volume factors correlating with trismus following chemoradiation for head and neck cancer.

BACKGROUND: To investigate the dose-volume factors in mastication muscles that are implicated as possible causes of trismus in patients following treatment with intensity-modulated radiotherapy (IMRT) and concurrent chemotherapy for head and neck cancers. MATERIAL AND METHODS: All evaluable patients treated at our institution between January 2004 and April 2009 with chemotherapy and IMRT for squamous cell cancers of the oropharynx, nasopharynx, hypopharynx or larynx were included in this analysis (N = 421). Trismus was assessed using CTCAE 4.0. Bi-lateral masseter, temporalis, lateral pterygoid and medial pterygoid muscles were delineated on axial computed tomography (CT) treatment planning images, and dose-volume parameters were extracted to investigate univariate and multimetric correlations. RESULTS: Forty-six patients (10.9%) were observed to have chronic trismus of grade 1 or greater. From analysis of baseline patient characteristics, toxicity correlated with primary site and patient age. From dose-volume analysis, the steepest dose thresholds and highest correlations were seen for mean dose to ipsilateral masseter (Spearman's rank correlation coefficient Rs = 0.25) and medial pterygoid (Rs = 0.23) muscles. Lyman-Kutcher-Burman modeling showed highest correlations for the same muscles. The best correlation for multimetric logistic regression modeling was with V68Gy to the ipsilateral medial pterygoid (Rs = 0.29). CONCLUSION: Chemoradiation-induced trismus remains a problem particularly for patients with oropharyngeal carcinoma. Strong dose-volume correlations support the hypothesis that limiting dose to the ipsilateral masseter muscle and, in particular, the medial pterygoid muscle may reduce the likelihood of trismus.

Predictors for trismus in patients receiving radiotherapy.

BACKGROUND: Trismus, a restricted mouth opening in head and neck cancer patients may be caused by tumor infiltration in masticatory muscles, radiation-induced fibrosis or scarring after surgery. It may impede oral functioning severely. The aims of our study were to determine: (1) the incidence of trismus at various time points; and (2) the patient, tumor, and treatment characteristics that predict the development of trismus after radiotherapy in head and neck cancer patients using a large database (n = 641). METHODS: Maximal mouth opening was measured prior to and 6, 12, 18, 24, 36, and 48 months after radiotherapy. Patient, tumor, and treatment characteristics were analyzed as potential predictors for trismus using a multivariable logistic regression analysis. RESULTS: At six months after radiotherapy, 28.1% of the patients without trismus prior to radiotherapy developed trismus for the first time. At subsequent time points the incidence declined. Over a total period of 48 months after radiotherapy, the incidence of trismus was 3.6 per 10 person years at risk. Patients who had tumors located in the oral cavity, oropharynx or nasopharynx, and the salivary glands or ear, and who had a longer overall treatment time of radiotherapy, were more likely to develop trismus in the first six months after radiotherapy. Maximal mouth opening was a predictor for developing trismus at all time points. CONCLUSION: Incidence of trismus is 3.6 per 10 person years at risk. Tumor localization and overall treatment time of radiotherapy are predictors for developing trismus the first six months after radiotherapy. Maximal mouth opening is a significant predictor for developing trismus at all time points. Regular measurements of maximal mouth opening are needed to predict trismus.

Predicting the outcome of peritonsillar abscess in children.

OBJECTIVES: peritonsillar abscess (PTA) is the most common deep neck infection in children. The causes of its development and recurrence are not fully understood. The aim of this study was to investigate the predictive factors of PTA outcome such as recurrent tonsillitis, recurrent/residual PTA and interval tonsillectomy in children. METHODOLOGY: retrospective study of surgically confirmed paediatric PTA case series in one medical centre (1997-2007). Anamnestic, clinical and laboratory parameters of primary PTA were compared with recurrent cases. RESULTS: thirteen 13 of the 8 1 enrolled patients (16 %) had had PTA previously. Their incidence of trismus and percentage of neutrophils in peripheral blood were lower than in the primary cases. Past history of PTA, a positive pus culture and type of pathogen did not influence outcome. CONCLUSION: no evaluated factor was found to be definitive for predicting PTA outcome. The clinical presenation of a recurrent PTA may be less severe in appearance than in a primary case.

Expanding the mutational spectrum of CRLF1 in Crisponi/CISS1 syndrome.

Crisponi syndrome (CS) and cold-induced sweating syndrome type 1 (CISS1) share clinical characteristics, such as dysmorphic features, muscle contractions, scoliosis, and cold-induced sweating, with CS patients showing a severe clinical course in infancy involving hyperthermia associated with death in most cases in the first years of life. To date, 24 distinct CRLF1 mutations have been found either in homozygosity or in compound heterozygosity in CS/CISS1 patients, with the highest prevalence in Sardinia, Turkey, and Spain. By reporting 11 novel CRLF1 mutations, here we expand the mutational spectrum of CRLF1 in the CS/CISS1 syndrome to a total of 35 variants and present an overview of the different molecular and clinical features of all of them. To catalog all the 35 mutations, we created a CRLF1 mutations database, based on the Leiden Open (source) Variation Database (LOVD) system (https://grenada.lumc.nl/LOVD2/mendelian_genes/variants). Overall, the available functional and clinical data support the fact that both syndromes actually represent manifestations of the same autosomal-recessive disorder caused by mutations in the CRLF1 gene. Therefore, we propose to rename the two overlapping entities with the broader term of Crisponi/CISS1 syndrome.

Radiation-induced trismus in the ARTSCAN head and neck trial.

UNLABELLED: Trismus, a well-known sequelae after treatment of head and neck cancer, decreases a patient's oral function and quality of life. The main objectives of this study were to: 1) investigate the long-term prevalence of radiation-induced trismus in patients treated for head and neck cancer according to two different fractionation schedules; and 2) model a dose-response relationship for trismus. MATERIAL AND METHODS: Patients were recruited from the Swedish ARTSCAN trial, a prospective randomised multicentre study comparing conventional and accelerated fractionation. A total of 124 patients agreed to a clinical ENT examination 21-127 months (median 66 months) after beginning radiation therapy. Trismus-related scores were assessed using the EORTC H&N35 Quality of Life questionnaire. The TheraBite(®) range of motion scale was used to measure maximal interincisal distance. The dose-response relationship for structures important for mastication and the temporomandibular joints was investigated by normal tissue complication probability modelling. RESULTS: No significant differences in patient-reported trismus or maximal interincisal distance were found between the two trial arms. Patient-reported moderate to high scores regarding trismus increased from 3% at the start of radiation therapy to 25% at the long-term follow-up. Maximal interincisal distance correlated significantly with patient-reported scores of trismus. The best dose-response fit to the endpoint data was found for the dose to the ipsilateral masseter. CONCLUSIONS: Trismus is a persistent complication after radiotherapy with 3D-conformal radiation therapy. We found no difference between the severity and prevalence of trismus between conventional and accelerated fractionation, but a significant correlation between the absorbed dose to the mastication structures and opening of the mouth. Further prospective studies may determine whether a reduced dose to structures important for mastication using intensity-modulated radiation therapy will reduce problems with trismus.

Definitive radiotherapy and trismus in HNC patients: A critical review.

INTRODUCTION: Trismus is a potentially critical morbidity following curative-intended radiotherapy in head and neck cancer patients. However, in this setting, evidence regarding this side effect remains to be fully defined, particularly in terms of dosimetric parameters. MATERIALS AND METHODS: Key references were derived from a PubMed query. Hand searching and clinicaltrials.gov were also used. RESULTS: This paper contains a narrative report and a critical discussion of the evidence on radiation-induced trismus in the literature, particularly the dosimetric concerns. CONCLUSIONS: The treatment goal should be to maintain high cure rates and limit the onset of complications. Further evaluations of dosimetric measures and clinical outcomes are warranted to identify patients at higher risk to target treatment tailoring.

Novel Index Combining Pan-Immune-Inflammatory Index and Hemoglobin Levels (PIV/Hb) Predicts Trismus Rates Efficiently after Chemoradiotherapy in Locally Advanced Nasopharyngeal Cancer.

Purpose: To evaluate the predictive potency of a novel index combining the pan-immune-inflammatory index and hemoglobin levels (PIV/Hb) for the prevalence of radiation-induced trismus (RIT) in patients with locally advanced nasopharyngeal cancer (LA-NPC) receiving concurrent chemoradiotherapy (CCRT). Methods: Data from 228 LA-NPC patients were retrospectively examined. Maximum mouth openings (MMO) were measured to confirm the presence of RIT, defined as MMOs ≤35 mm. Complete blood test results from the first day of CCRT were used to calculate PIV/Hb levels. A potential relationship between pretreatment PIV/Hb and the RIT status was evaluated using receiver operating characteristic (ROC) curve analysis. Results: Post-CCRT RIT was diagnosed in 20.2% of the patients. The ROC curve analysis determined 68.4 g/dL as the ideal PIV/Hb cutoff that effectively divided patients into two distinct groups (area under the curve: 94.7%; specificity: 86.4%; sensitivity: 87.4%). RIT was significantly more prevalent in the PIV/Hb > 68 group than in the PIV/Hb < 68 group (58.8% vs. 3.8%; P < 0.001). Multivariate logistic regression analysis showed that a pre-CCRT PIV > 68 was independently associated with significantly higher rates of RIT. Conclusion: Higher pretreatment levels of the novel PIV/Hb index predict increased RIT rates following definitive CCRT for LA-NPCs.

Efficacy of matrix rhythm therapy (MaRhyThe©) over conventional therapy on radiation induced trismus-A pilot randomised control trial.

BACKGROUND AND OBJECTIVES: Prevalence of radiation induced trismus in head and neck cancer (HNC) is 38% to 42% globally. Radiation induced trismus depends on the dosage of the radiation therapy and the surgical procedure. Myofascial release (MFR) and Matrix rhythm therapy (MaRhyThe©) are techniques used to treat the myofascial pain and muscular restriction. The present study aimed to compare the effect of MFR and MaRhyThe© on pain, mouth opening, TMJ disability index (TDI), Gothenburg Trismuus Questionnaire (GTQ), Functional Intraoral Glasgow Scale (FIGS) and quality of life in participants with Radiation induced trismus. MATERIALS AND METHODOLOGY: About 30 participants in age group of 18 to 65 years diagnosed with radiation induced trismus were included in the study. All the participants were randomly allocated in 2 groups MFR group and MaRhyThe© group. Both the group received structured exercise program. Primary outcomes were Visual Analogue Scale (VAS), Vernier Caliper reading for maximum mouth opening. Secondary outcome measure viz. GTQ, TDI, FIGS and Functional Assessment of Cancer Therapy-Head and Neck (FACT-HN) all obtained values were analyzed at the end of 4th week. RESULTS: The present study demonstrated significant improvement in terms of reduction in pain, improvement in maximum mouth opening and in GTQ, TMD, FIGS, and FACT-HN scores in all the participants in both group (p ≤ 0.05). However, the groups showed equal effectiveness in the treatment of radiation induced trismus.