[Hyoid epiglottis combined with sternocleidomastoid muscle clavicle flap for repairing laryngeal defect after laryngeal trauma infection: a case report].

The initial treatment of open laryngeal trauma must be implemented immediately, with the primary focus on saving lives. However, in the later stages, various factors may cause changes in the structure and function of the larynx, which requires special attention. This article reports on the treatment process of a patient with depression who suffered from laryngeal trauma. Due to the late stage of laryngeal infection causing laryngeal defects, a hyoid epiglottis combined with sternocleidomastoid muscle clavicular flap repair was performed. Additionally, personalized functional exercise was performed, ultimately resulting in recovery.

Smoking Is Markedly Associated With 30-Day Readmission and Revision Surgery After Surgical Treatment of Clavicle Fracture.

BACKGROUND: A recent database study found that 15.2% of clavicle fractures underwent surgical treatment. Recent evidence accentuates the role of smoking in predicting nonunion. The purpose of this study was to further elucidate the effect of smoking on the 30-day postoperative outcomes after surgical treatment of clavicle fractures. METHODS: The authors queried the American College of Surgeons National Surgical Quality Improvement Program database for all patients who underwent open reduction and internal fixation of clavicle fracture between 2015 and 2020. Multivariate logistic regression, adjusted for notable patient demographics and comorbidities, was used to identify associations between current smoking status and postoperative complications. RESULTS: In total, 6,132 patients were included in this study of whom 1,510 (24.6%) were current smokers and 4,622 (75.4%) were nonsmokers. Multivariate analysis found current smoking status to be significantly associated with higher rates of deep incisional surgical-site infection (OR, 7.87; 95% CI, 1.51 to 41.09; P = 0.014), revision surgery (OR, 2.74; 95% CI, 1.67 to 4.49; P < 0.001), and readmission (OR, 3.29; 95% CI, 1.84 to 5.89; P < 0.001). CONCLUSION: Current smoking status is markedly associated with higher rates of deep incisional surgical-site infection, revision surgery, and readmission within 30 days after open reduction and internal fixation of clavicle fracture.

Distal Clavicle Fracture Repair Utilizing Plate and Suture-Button Fixation: Optimizing Intraoperative Fluoroscopy.

VIDEO AVAILABLE AT: https://ota.org/education/ota-online-resources/video-library-procedures-techniques/distal-clavicle-fracture-repair.

No code machine learning: validating the approach on use-case for classifying clavicle fractures.

PURPOSE: We created an infrastructure for no code machine learning (NML) platform for non-programming physicians to create NML model. We tested the platform by creating an NML model for classifying radiographs for the presence and absence of clavicle fractures. METHODS: Our IRB-approved retrospective study included 4135 clavicle radiographs from 2039 patients (mean age 52 ± 20 years, F:M 1022:1017) from 13 hospitals. Each patient had two-view clavicle radiographs with axial and anterior-posterior projections. The positive radiographs had either displaced or non-displaced clavicle fractures. We configured the NML platform to automatically retrieve the eligible exams using the series' unique identification from the hospital virtual network archive via web access to DICOM Objects. The platform trained a model until the validation loss plateaus. Once the testing was complete, the platform provided the receiver operating characteristics curve and confusion matrix for estimating sensitivity, specificity, and accuracy. RESULTS: The NML platform successfully retrieved 3917 radiographs (3917/4135, 94.7 %) and parsed them for creating a ML classifier with 2151 radiographs in the training, 100 radiographs for validation, and 1666 radiographs in testing datasets (772 radiographs with clavicle fracture, 894 without clavicle fracture). The network identified clavicle fracture with 90 % sensitivity, 87 % specificity, and 88 % accuracy with AUC of 0.95 (confidence interval 0.94-0.96). CONCLUSION: A NML platform can help physicians create and test machine learning models from multicenter imaging datasets such as the one in our study for classifying radiographs based on the presence of clavicle fracture.

Efficacy of intramedullary bridge fixation for midshaft clavicle fractures: a retrospective analysis of a novel technique.

BACKGROUND: The aim of this study was to explore the efficacy of a novel intramedullary fixation technique using the ortho-bridge system (OBS) for midshaft clavicle fractures. METHODS: A total of 63 patients were included in this study: 35 underwent plate internal fixation (LP group) and 28 underwent OBS intramedullary fixation (OBS group). Surgical time, intraoperative blood loss, incision length, fracture healing time, removal of the internal fixation agent, visual analog scale (VAS) score for shoulder pain, Constant-Murley shoulder score and complication occurrence were compared between the two groups. RESULTS: Preoperative general data, such as sex, age and fracture type, were not significantly different between the two groups (P > 0.05). However, the OBS group exhibited better outcomes than the LP group exhibited in terms of surgical time, intraoperative blood loss and total incision length (P < 0.05). Additionally, the OBS group exhibited a significantly shorter fracture healing time and internal-fixation removal time than the LP group exhibited (P < 0.05). The VAS scores on postoperative day 1, week 1, month 1 and month 3 were lower in the OBS group than in the LP group (P < 0.05). Furthermore, the Constant-Murley shoulder scores at 1, 3, and 6 months postoperatively were higher in the OBS group than in the LP group (P < 0.05), with no significant difference at 1 year after surgery (P > 0.05). None of the patients in the OBS group experienced scarring of the surgical incision, and 6 patients in the LP group experienced scarring of the surgical incision. Finally, the complication incidence in the OBS group was lower than that in the LP group. CONCLUSION: For midshaft clavicle fractures, OBS intramedullary fixation is better than locking-plate internal fixation because it led to less trauma, a faster recovery, better efficacy, and better esthetic outcomes and comfort. Therefore, this technique may have potential as a novel treatment for midshaft clavicle fractures. LEVEL OF EVIDENCE: III, retrospective observational study.

The Role of Botulinum Neurotoxin A in the Conservative Treatment of Fractures: An Experimental Study on Rats.

This paper explores the role of botulinum neurotoxin in aiding fracture recovery through temporary muscle paralysis. Specifically, it investigates the effects of botulinum neurotoxin-induced paralysis of the sternocleidomastoid muscle on clavicle fractures in rats. The research aims to assess safety, effectiveness, and the impact on fracture healing. Healthy male Albino Wistar rats were divided into four groups: clavicle fracture, botulinum neurotoxin injection, both, and control. Surgeries were conducted under anaesthesia, and postoperatively, animals were monitored for 28 days. Euthanasia and radiological assessment followed, examining fracture healing and muscle changes, while tissues were histopathologically evaluated. The modified Lane-Sandhu scoring system was used for the radiographic evaluation of clavicle fractures, and the results varied from complete healing to nonunion. Histopathological examination at 28 days postfracture showed fibrous tissue, mesenchymal cells, and primary callus formation in all groups. Despite varied callus compositions, botulinum neurotoxin administration did not affect clavicle healing, as evidenced by similar scores to the control group. Several studies have explored botulinum neurotoxin applications in fracture recovery. Research suggests its potential to enhance functional recovery in certain types of fractures. Theoretical benefits include managing muscle spasticity, aiding reduction techniques, and preventing nonunion. However, botulinum neurotoxin's transient effect and nonuniversal applications should be considered. The present study found that botulinum toxin had no clear superiority in healing compared to controls, while histological evaluation showed potential adverse effects on muscle tissue. Further research is essential to understand its risk-benefit balance and long-term effects.

Multicenter, Prospective, Observational Study of Nonoperative Versus Operative Treatment for High-Energy Midshaft Clavicle Fractures.

OBJECTIVES: Evaluate if nonoperative or operative treatment of displaced clavicle fractures delivers reduced rates of nonunion and improved Disability of the Arm, Shoulder, and Hand (DASH) scores. DESIGN: Multicenter, prospective, observational. SETTING: Seven Level 1 Trauma Centers in the United States. PATIENT SELECTION CRITERIA: Adults with closed, displaced (100% displacement/shortened >1.5 cm) midshaft clavicle fractures (Orthopaedic Trauma Association 15.2) were treated nonoperatively, with plates and screw fixation, or with intramedullary fixation from 2003 to 2018. OUTCOME MEASURES AND COMPARISONS: DASH scores (2, 6 weeks, 3, 6, 12, and 24 months), reoperation, and nonunion were compared between the nonoperative, plate fixation, and intramedullary fixation groups. RESULTS: Four hundred twelve patients were enrolled, with 203 undergoing plate fixation, 26 receiving intramedullary fixation, and 183 treated nonoperatively. The average age of the nonoperative group was 40.1 (range 18-79) years versus 35.8 (range 18-74) in the plate group and 39.3 (range 19-56) in the intramedullary fixation group (P = 0.06). One hundred forty (76.5%) patients in the nonoperative group were male compared with 154 (75.9%) in the plate group and 18 (69.2%) in the intramedullary fixation group (P = 0.69). All groups showed similar DASH scores at 2 weeks, 12 months, and 24 months (P > 0.05). Plate fixation demonstrated better DASH scores (median = 20.8) than nonoperative (median = 28.3) at 6 weeks (P = 0.04). Intramedullary fixation had poorer DASH scores at 6 weeks, 3 months, and 6 months than plate fixation and worse DASH scores than nonoperative at 6 months (P < 0.05). The nonunion rate for nonoperative treatment (14.6%) was significantly higher than the plate group (0%) (P < 0.001). CONCLUSIONS: Operative treatment of displaced clavicle fractures provided lower rates of nonunion than nonoperative treatment. Except at 6 weeks, no difference was observed in DASH scores between plate fixation and nonoperative treatment. Intramedullary fixation resulted in worse DASH scores than plate fixation at 6 weeks, 3 months, and 6 months and worse DASH scores than nonoperative at 6 months. Implant removal was the leading reason for reoperation in the plate and intramedullary fixation groups, whereas surgery for nonunion was the primary reason for surgery in the nonoperative group. LEVEL OF EVIDENCE: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.

Nonoperative Versus Operative Treatment of Z-Type Comminuted Clavicle Fractures in Adolescents: A Prospective Substratified Cohort Analysis.

OBJECTIVES: To compare the clinical, radiographic, and patient-reported outcomes of nonoperative and operative treatment of adolescents with comminuted "Z-type" midshaft clavicle fractures. DESIGN: Prospective observational cohort. SETTING: Eight tertiary care pediatric centers. PATIENT SELECTION CRITERIA: Patients aged 10-18 years who were treated either operatively or nonoperatively for a diaphyseal clavicle fracture between 2013 and 2017 were screened/enrolled at the time of injury. The current subcohort analysis was derived from a larger adolescent clavicle study population of 907 patients. OUTCOME MEASUREMENTS AND COMPARISONS: Complications and validated patient-reported outcome measures (PROs):(ASES, QuickDASH, Marx Shoulder Activity Score, EQ-5D, EQ-VAS, and patient satisfaction score) were compared between operative and nonoperative cohorts. RESULTS: Eighty-one patients (69 male [85.2%], 12 female; average age 15 years [11.1-18.7]; 78 with sports participation [96.2%]) were followed through bony healing and return to sports, while 59 patients (73%) completed 2-year follow-up with PROs, 26 of whom were treated nonoperatively and 33 treated operatively. All demographic and fracture characteristics were similar (P > 0.05) between the 2-year follow-up cohorts except for fracture shortening, which was greater in the operative cohort (23 vs. 29 mm, P = 0.01). After controlling for this potential confounder through both regression and propensity matched subgroup analysis, nonoperative versus operative cohorts showed no difference in rates of nonunion (0%), delayed union (0% vs. 2.3%, P = 1.0), symptomatic malunion (2.7% vs. 0%, P = 0.4), refracture (2.7% vs. 2.2%, P = 1.0), unexpected subsequent surgery (5.4% vs. 11.4%, P = 0.45), or clinically significant complications (5.4% vs. 16%, P = 0.17). There were no differences in any PROs between cohorts, both before and after controlling for the difference in fracture shortening (all P-values >0.05). CONCLUSIONS: In this prospective comparison of complications and 2-year PROs in adolescents with comminuted Z-type clavicle fractures, nonoperative and operative treatment yielded similar outcomes. LEVEL OF EVIDENCE: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.

Stress fracture of the clavicle associated with sternocostoclavicular hyperostosis combined with bony ankylosis of the acromioclavicular joint and ossification of the coracoclavicular ligament.

Sternocostoclavicular hyperostosis (SCCH) has been reported in patients with pustulotic arthro-osteitis, but there are few reports of marked ossification of the lateral part of the clavicle. Here, we report a case of stress fracture in a patient with SCCH with marked ossification of the lateral part of the clavicle. In this case, the clavicular fracture was proximal and no dislocation. Conservative treatment with a clavicle band and the administration of corticosteroids resulted in rapid symptom improvement. Eight months later, the patient had no difficulty in daily life, but X-rays showed that bone fusion was not complete. Therefore, it is necessary to carefully follow-up such patients for any recurrence of symptoms and radiographic changes.

Comprehensive comparison between conservative therapy and surgical management for completely displaced and comminuted mid-shaft clavicle fractures.

PURPOSE: It is still controversial whether complete displaced mid-shaft clavicle fractures should be treated with internal fixation or conservative therapy. This retrospective study aims to compare clinical outcomes of two treatment protocols. MATERIALS AND METHODS: 105 patients with displaced and comminuted mid-shaft clavicle fractures were included in this study, among which 55 patients were treated conservatively and 50 patients accepted surgical fixation and were followed up for over 20 months on average. Rate of union, malunion, time taken for union, functional outcome, self-reported satisfaction and complications were compared. RESULTS: Union rate of operative group (n=49, 98.0%) was higher than the non-operative group (n=48, 87.3%). Time taken for union in operative group (2.37±1.06 months) was shorter than the non-operative group (3.69±1.01 months). Malunion and asymmetric were only seen in the conservative group. Numbness of the shoulder was only reported in the operative group (n=23, 46.0%). Most of patients in the operative group (n=45, 90%) accepted a second operation to remove the implant. No statistically difference was found in self-reported satisfaction, Quick-DASH and Constant-Murley score. The operative group returned to work faster (1.47±0.89 to 3.34±1.37 months), regained full range of motion earlier (1.66±0.78 to 3.83±1.24 months) and regained strength faster (3.86±2.45 to 8.03±2.78 months) than the non-operative group. CONCLUSION: Complete displaced and comminuted mid-shaft clavicle fractures treated surgically have more reliable union and faster recovery when compared to conservatively treated fractures.

Superior versus anteroinferior plating for mid-shaft clavicle fractures: a randomized clinical trial.

BACKGROUND: Clavicle fractures represent 2.5-4% of all fractures observed in emergency services. 80% occurs in the middle third. Treatment by plating requires a higher level of evidence. OBJECTIVE: To compare the functional outcomes of mid-shaft clavicle fractures managed with superior plating compared to anteroinferior plating. TRIAL DESIGN: A randomized, double-blind, parallel, superiority clinical trial. PATIENTS AND METHODS: Patients with fractures of the clavicles AO15B1 and AO15B2 were studied. Patients were randomized to be treated with either 3.5 mm superior or anteroinferior plating. A rehabilitation program was designed for both groups. The primary outcome measure was the Disability of Arm, Shoulder, and Hand (DASH) score; secondary outcomes included pain, union rate, and complication rates. RESULTS: Twenty-eight patients were studied and were eligible for analysis. Significant differences were found in the function assessed with the DASH score at 30 days for the superior plating compared with anteroinferior (43.74 vs. 29.26, respectively, p = 0.027), 60 days (23.97 vs. 11.18, p = 0.021), and 90 days (9.52 vs. 3.5, p = 0.016). One loosening with superficial infection was found with superior plating. CONCLUSIONS: Using an anteroinferior reconstruction plate in diaphyseal fractures offers better functional results than the upper plate in patients with fractures of the middle third of the clavicle.

ANTECEDENTES: Las fracturas de clavícula comprenden el 2.5-4% de todas las fracturas observadas en los servicios de emergencia. El 80% se presentan en el tercio medio. La posición de la placa como tratamiento requiere mayor nivel de evidencia. OBJETIVO: Comparar los resultados funcionales de las fracturas diafisarias de clavícula manejadas con placa superior versus placa anteroinferior. MÉTODO: Ensayo clínico aleatorizado, doble ciego, paralelo, de superioridad. Se estudiaron pacientes con fractura diafisaria de clavícula AO15B1 y AO15B2. Se manejaron con placa de reconstrucción de 3.5 mm colocada en forma superior o anteroinferior. Se diseñó un programa de rehabilitación para ambos grupos. El resultado primario fue medido con el cuestionario DASH y los resultados secundarios incluyeron dolor, presencia de consolidación y complicaciones. RESULTADOS: Fueron elegibles para análisis 28 pacientes. Se encontraron diferencias significativas de la escala DASH a los 30 días para la maniobra superior comparada con la inferior (43.74 vs. 29.26, respectivamente; p = 0.027), a los 60 días (23.97 vs. 11.18; p = 0.021) y a los 90 días (9.52 vs. 3.5; p = 0.016). CONCLUSIONES: El uso de placa de reconstrucción anteroinferior en las fracturas diafisarias ofrece mejores resultados funcionales en comparación con la placa superior en pacientes con fracturas de tercio medio de clavícula.

The Effect of Clavicular Tunnel Position on Reduction Loss in Patients with Acute Acromioclavicular Joint Dislocations Operated with a Single-Bundle Suspensory Loop Device.

OBJECTIVE: The treatment of acromioclavicular joint (ACJ) dislocations offers numerous options, and ongoing debates persist regarding their comparative effectiveness. Among these options, the suspensory loop device (SLD) is one of the most favored treatment modalities. Despite the observed high reduction loss rate associated with SLD, the treatment yields favorable clinical outcomes. This study aimed to investigate the clinical outcomes of patients with acute type 3 and 5 ACJ dislocations who underwent open and arthroscopic procedures using a single-bundle SLD, and to evaluate the effect of clavicular tunnel position on reduction loss. METHODS: Thirty-seven eligible patients diagnosed with acute type 3 and type 5 ACJ dislocation who underwent open and arthroscopic surgery with a single-bundle SLD between January 2015 and March 2022 were evaluated retrospectively. Demographic data and radiological measurements including coracoclavicular (CC) interval, clavicle length (CL), and implant distance (ID) were recorded. The ID/CL ratio was calculated and a value between 0.17 and 0.24 was considered as "acceptable implant position". Reduction loss and other complications were noted. Patients were divided into two groups: open (Group 1) and arthroscopic (Group 2). Constant Murray Score (CMS) and Visual Analog Scale (VAS) were used for clinical and functional outcomes. Non-parametric tests were used for statistical analysis of variables. RESULTS: The study included six females (16.2%) and 31 males (83.8%) with a mean age of 40.2 ± 14.7 years (range: 20-75). The mean follow-up period was 22.3 ± 16.7 months (range: 6-72). The average time from trauma to surgery was 6.3 ± 5.3 days (range: 1-18). At the last follow-up, the CMS was 89.3 ± 8.8 and the VAS score was 2.1 ± 0.9. The mean ID/CL ratio was 0.19 ± 0.1 and 19 patients (51.4%) were between 0.17 and 0.24. Reduction loss was observed in nine patients (24.3%). There were no significant differences between Group 1 and Group 2 regarding operation time (p = 0.998), ID/CL ratio (p = 0.442), reduction loss (p = 0.458), CMS (p = 0.325), and VAS score (p = 0.699). Of the 28 patients without reduction loss, 16 had an ID/CL ratio between 0.17 and 0.24 (p = 0.43). Furthermore, within the 0.17-0.24 interval, CMS was higher with an average of 91.8 ± 5.1 compared to the other intervals (p = 0.559). CONCLUSION: The clinical and functional outcomes of acute type 3 and type 5 ACJ dislocation operated open and arthroscopically with single-bundle SLD are similar and satisfactory. A clavicular tunnel position in the range of 0.17-0.24 (ID/CL ratio) is recommended to maintain postoperative reduction.

Ex vivo analysis of cortical microarchitecture of the distal clavicle: implications for surgical management of fractures.

BACKGROUND: Cortical thickness and porosity are two main determinants of cortical bone strength. Thus, mapping variations in these parameters across the full width of the distal end of the clavicle may be helpful for better understanding the basis of distal clavicle fractures and for selecting optimal surgical treatment. METHODS: Distal ends of 11 clavicles (6 men, 5 women; age: 81.9 ± 15.1 years) were scanned by micro-computed tomography at 10-µm resolution. We first analyzed cortical thickness and porosity of each 500-µm-wide area across the superior surface of distal clavicle at the level of conoid tubercle in an antero-posterior direction. This level was chosen for detailed evaluation because previous studies have demonstrated its superior microarchitecture relative to the rest of the distal clavicle. Subsequently, we divided the full width of distal clavicle to three subregions (anterior, middle, and posterior) and analyzed cortical porosity, pore diameter, pore separation, and cortical thickness. RESULTS: We found the largest number of low-thickness and high-porosity areas in the anterior subregion. Cortical porosity, pore diameter, pore separation, and cortical thickness varied significantly among the three subregions (p < 0.001 p = 0.016, p = 0.001, p < 0.001, respectively). Cortex of the anterior subregion was more porous than that of the middle subregion (p < 0.001) and more porous and thinner than that of the posterior subregion (p < 0.001, p = 0.030, respectively). Interaction of site and sex revealed higher porosity of the anterior subregion in women (p < 0.001). The anterior subregion had larger pores than the middle subregion (p = 0.019), whereas the middle subregion had greater pore separation compared with the anterior (p = 0.002) and posterior subregions (p = 0.006). In general, compared with men, women had thinner (p < 0.001) and more porous cortex (p = 0.03) with larger cortical pores (p < 0.001). CONCLUSIONS: Due to high cortical porosity and low thickness, the anterior conoid subregion exhibits poor bone microarchitecture, particularly in women, which may be considered in clinical practice. LEVELS OF EVIDENCE: Level IV.

Postoperative recreational sports and subjective shoulder function: a comprehensive analysis following intramedullary stabilization of displaced midshaft clavicular fractures.

Introduction Sports-related outcomes and the role of recreational sports activities for shoulder function after intramedullary stabilization (IMS) of displaced midshaft clavicular fractures (DMCFs) in the general population are not well known. In this study, we aimed to determine the sport-related outcomes (return-to-sports [RTS] rate, type of sports, time until RTS, and intensity) and to explore the role of sports after IMS of DMCFs. Materials and Methods This single-center, retrospective, cohort study included patients who underwent IMS of DMCFs between 2009 and 2022 at a Level II trauma center in Germany, experienced no major complications, and had completed at least 1 year of follow-up. Propensity score matching was conducted to obtain a balanced sample of patients who did not engage (cases) and engaged (controls) in postoperative sports activities by adjusting for age and fracture complexity. Groups were compared to assess the impact of regular sports activities on subjective shoulder functioning at follow-up, as evaluated using the Disabilities of the Arm, Shoulder, and Hand and Oxford Shoulder Score (OSS) questionnaires, after controlling for the patient- (i.e., sex and smoking) and treatment- (i.e., surgery duration and physical therapy) factors. Results Among the 199 patients included, the RTS rate was 97.5%, and 160 patients practiced regular postoperative activity, mostly in the same sport and intensity. In the matched cohort (39 cases and 39 controls), practicing regular sports activities postoperatively was the only independent factor associated with a higher OSS in the multiple regression analysis (unstandardized regression coefficient = 2.40; Bias-corrected and accelerated 95% confidence interval [0.28, 4.69]). Conclusions The sport-related outcomes after IMS of DMCFs in our cohort were comparable to those achieved after plate osteosynthesis, and IMS reported in the literature. Recreational sports activities benefitted subjective shoulder function, thereby encouraging further research and potentially influencing management policies. Level of evidence Grade IV - a retrospective observational cohort study.

Malunion of a clavicle fracture caused thoracic outlet syndrome in a professional violinist.

Clavicle fractures are a common injury in adults. Most patients are treated non-operatively. In this case report, a 53-year-old professional violinist had a midt shaft clavicula fracture and was treated non-operatively. The fracture healed, but the patient developed thoracic outlet syndrome (TOS) and a venous thrombosis when playing violin. Surgery with restoration of the normal anatomy alleviated the symptoms and six months later she was symptom free and playing violin again. TOS is a rare complication to clavicle fractures and the treating doctors should be aware of the diagnosis.

Clavipectoral fascia plane block in midshaft clavicle fractures: A cadaveric study.

STUDY OBJECTIVE: The objective of this anatomical study was to investigate the distribution of a solution administered using the Clavipectoral Fascia Plane Block (CPB) technique in a series of cadaveric models with midshaft clavicular fractures. The study aimed to address the knowledge gap regarding the impact of clavicular fractures on the distribution pattern of the CPB-administered solution. DESIGN: Observational cadaveric study. SETTING: The research was conducted in the laboratory setting of the University of Barcelona, adhering to the institution's ethical guidelines and standards. PATIENTS: Five unembalmed human cadavers were used, generating ten clavicle samples. INTERVENTIONS: A postmortem fracture was induced in the middle third of the clavicle using a blunt-edged hammer, simulating a midshaft clavicular fracture. MEASUREMENTS: Anatomical dissection was performed in three layers: the superficial muscle plane, deep muscle plane, and clavicular periosteum plane. Dye staining with methylene blue was utilized to assess the distribution pattern. MAIN RESULTS: In the superficial muscular plane, methylene blue was observed in the deltoid (100%), pectoralis major (100%), sternocleidomastoid (SCM) (70%), and trapezius muscles (100%). Conversely, the deep muscular plane, including the subclavius muscle, pectoralis minor, and Clavipectoral Fascia (CPF), exhibited no staining. At the clavicular periosteum plane, methylene blue distributed predominantly to the antero-superior region (57.3%), with a minimal impact on the postero-inferior area (6.5%). CONCLUSIONS: The study reveals that the presence of a midshaft clavicular fracture does not significantly alter the diffusion pattern of the CPB-administered solution, maintaining a consistent distribution in both intact and fractured clavicle models.

Clavicle fracture and triathlon performance: a case report.

BACKGROUND: Collarbone fracture is a common injury, particularly among athletes involved in contact sports and participating in endurance activities. Conventional treatment requires surgery and postoperative immobilization, resulting in an average return-to-sport timeframe of approximately 13 weeks. This case challenges the established treatment protocols, aiming to expedite recovery and enable a quicker resumption of high-intensity athletic activities. CASE PRESENTATION: A 24-year-old Caucasian athlete completed a Half-Ironman Triathlon (70.3) merely three weeks post-collarbone fracture. Utilizing Extracorporeal Magneto-Transduction Therapy (EMTT) alongside surgical intervention, the patient achieved accelerated healing and remarkable performance outcomes without encountering any adverse effects. CONCLUSIONS: The integration of EMTT into the treatment paradigm for bone fractures alters the traditional understanding of recovery timelines and rehabilitation strategies. This case highlights the potential benefits of electromagnetic wave therapy in expediting the healing process and enabling athletes to resume high-level sports activities at an earlier stage.