Pediatric Elbow Research Articles

Deep learning accurately classifies elbow joint effusion in adult and pediatric radiographs

Joint effusion due to elbow fractures are common among adults and children. Radiography is the most commonly used imaging procedure to diagnose elbow injuries. The purpose of the study was to investigate the diagnostic accuracy of deep convolutional neural network algorithms in joint effusion classification in pediatric and adult elbow radiographs. This retrospective study consisted of a total of 4423 radiographs in a 3-year period from 2017 to 2020. Data was randomly separated into training (n = 2672), validation (n = 892) and test set (n = 859). Two models using VGG16 as the base architecture were trained with either only lateral projection or with four projections (AP, LAT and Obliques). Three radiologists evaluated joint effusion separately on the test set. Accuracy, precision, recall, specificity, F1 measure, Cohen’s kappa, and two-sided 95% confidence intervals were calculated. Mean patient age was 34.4 years (1–98) and 47% were male patients. Trained deep learning framework showed an AUC of 0.951 (95% CI 0.946–0.955) and 0.906 (95% CI 0.89–0.91) for the lateral and four projection elbow joint images in the test set, respectively. Adult and pediatric patient groups separately showed an AUC of 0.966 and 0.924, respectively. Radiologists showed an average accuracy, sensitivity, specificity, precision, F1 score, and AUC of 92.8%, 91.7%, 93.6%, 91.07%, 91.4%, and 92.6%. There were no statistically significant differences between AUC's of the deep learning model and the radiologists (p value > 0.05). The model on the lateral dataset resulted in higher AUC compared to the model with four projection datasets. Using deep learning it is possible to achieve expert level diagnostic accuracy in elbow joint effusion classification in pediatric and adult radiographs. Deep learning used in this study can classify joint effusion in radiographs and can be used in image interpretation as an aid for radiologists.

Incidence of flexion-type supracondylar fractures at a single Australian level one Paediatric Trauma Centre.

BackgroundSupracondylar fractures are the most common elbow fracture. There have been no studies published analysing flexion‐type fractures in the Australian paediatric population. This paper aims to investigate flexion‐type supracondylar fractures in an Australian paediatric population. Eight hundred and three paediatric supracondylar elbow fractures were retrospectively reviewed at one hospital over a 5 year time period. The focus was on flexion‐type fractures.MethodsSupracondylar fractures that presented to the Women's and Children's Hospital Emergency Department between 2015 and 2020 were retrospectively reviewed. Fractures were classified on plain radiographs according to the Modified Gartland Classification System. Injury and treatment data were collected for flexion‐type fractures.ResultsTwenty‐one (2.6%) of fractures were flexion‐type. The average age of injury was 6.8 years old. Flexion‐type fractures were more common in females (62%) and with high energy mechanisms (81%). Ulnar nerve palsies occurred in five cases (24%). Two ulna nerve palsies did completely resolve at 3 months follow up. One open fracture occurred. No vascular injuries occurred. Ten of the 21 flexion‐type fractures (48%) were treated surgically.ConclusionsThe authors conclude that: flexion fractures are uncommon, they occur more often after high energy mechanisms such as falls from monkey bars, swings, or trampolines. Flexion‐type fractures occur more often in slightly older females. The ulnar nerve is most frequently injured and in the current study—exclusively injured. At 3 month follow up, spontaneous nerve recovery had occurred in three of the five cases (60%).

Pediatric Elbow – Developmental and Radiological Anatomy

Mismanagement of pediatric elbow injuries is not uncommon because of lack of knowledge of anatomy and development of elbow joint. This article describes postnatal development of elbow joint and radiological landmarks essential to differentiate normal and abnormal radiographs. Elbow joint is formed from six secondary ossification centres the order of appearance of which on radiographs can be remembered by the mnemonic “CRITOE”. The osteology, ligamentous and neurovascular anatomy of elbow have been described. Standard and special radiographic landmarks have been discussed while are invaluable to assess pediatric elbow radiographs especially in the setting of trauma.

Medial Epicondyle and Capitellar Fractures in a 4-Year-Old Girl: A Case Report

Although medial epicondyle fractures are responsible for 12% of pediatric elbow fractures, they rarely occur concurrently with a capitellar fracture, and the treatment approach and indications are controversial. According to the case report (CARE) guidelines, here we present a case of the medial epicondyle and capitellar fractures with elbow dislocation in a 4-year-old girl who underwent K-wire fixation and splint application. After four months of follow-up, the patient showed good results and a full range of motion. Open reduction and internal fixation may be reasonable options for medial epicondyle and concomitant capitellar fractures using the medial and lateral approaches. We suggest using K-wires, especially in the pediatric population.

The Baumann Angle: An Analysis from Theory to Practice.

Objective To analyze how the Baumann angle (BA) is affected by inadequate radiographic inclinations. Methods The study was performed from radiographs of the distal humerus of children aged 3 to 10 years. The BA measurements performed by five observers were compared, and each radiograph was evaluated for its quality as "adequate" or "inadequate." The correlation between radiographic quality and the normality of the angles was evaluated. Results Sample was composed of 141 patients, 44% between 3 and 6 years of age and 56% between 7 and 10. We observed the BA between 52.01 and 89.82 degrees, with about 16% of the measurements outside the normal limits of the literature. A total of 33.3% of the evaluated radiographs were classified as "inadequate". On the BA measurements outside the normality parameter, we observed that its proportion was higher among images with inadequate radiographic quality (31.1 vs. 6.2%), and this difference was significant ( p < 0.001). Conclusions The BA is a very variable measurement and, alone, it is unreliable for the evaluation of angular deformities of the pediatric elbow, with radiographic quality proven to be an important causal factor of this variability.

Nonaccidental Trauma in Pediatric Elbow Fractures: When You Should Be Worried.

Nonaccidental trauma (NAT) is a rising source of morbidity and mortality in the pediatric population. Fractures are often the first cause for presentation to health care providers in the case of NAT but can be misidentified as accidental. Given that elbow fractures are the most common accidental injuries among pediatric patients, they are not traditionally associated with NAT. This study aims to determine the prevalence of NAT among elbow fractures and identify common features in nonaccidental elbow fractures. Current Procedural Terminology (CPT) codes were used to retrospectively identify all pediatric (0 to 17) elbow fractures at a single, tertiary children's hospital between 2007 and 2017. Among these, all fractures for which an institutional child abuse evaluation team was consulted were identified. The medical record was then used to determine which of these fractures were due to NAT. Standard injury radiographs of all victims of NAT as well as all patients under 1 year of age were blinded and radiographically evaluated for fracture type by a pediatric orthopaedic surgeon. The prevalence of nonaccidental elbow fractures across the 10-year study period was 0.4% (N=18). However, the prevalence of nonaccidental elbow fractures in those patients below 1 year of age was markedly higher at 30.3% (10/33). Among all elbow fractures in patients below 1 year of age, supracondylar humerus fractures were the most common fracture type (19/33, 57.6%), yet transphyseal fractures (6/33, 18.1%) were most commonly the result of NAT (5/6, 83.3%). In children over 1 year of age, fracture type was not an indicator of NAT. The vast majority of pediatric elbow fractures (99.6%) are accidental. However, certain factors, namely age below 1 year and transphyseal fractures increase the likelihood that these fractures may be a result of NAT. Level IV: retrospective case series.

Elbow Injuries in Children

Elbow Injuries in Children

Long-term functional outcomes following paediatric traumatic elbow dislocation, a clinical retrospective cohort study

BackgroundPaediatric traumatic elbow dislocation occurs in 6 per 100,000 children per year and if not treated promptly can result in a poor outcome. Despite this, the long-term clinical and functional outcome of these injuries has not been well described using modern patient-reported outcome tools. The aim of our study was present the outcome of these injuries in the long term. MethodsTwenty children with an acute traumatic elbow dislocation who presented between February 2007 to February 2016 were included in our study. Patient demographics, management and complications were recorded from the clinical notes. Ten children had associated fractures and were managed surgically, while the remaining were managed with closed reduction and immobilisation. Functional outcomes were assessed with Kim's elbow performance score. ResultsThe mean age was 12 years (7 –15) and follow-up was 8 years (4 – 13). There was one (5%) re-dislocation requiring surgery and one (5%) ulna nerve neurapraxia that resolved within one month. The average Kim's scores were 87.5 (65 – 100) and 77.5 (60 – 100) in the closed reduction and open reduction groups, respectively (P=0.08). 80% (16/20) reported good or excellent outcome with a Kim's score of greater than 75 points with no cases of poor functional outcome reported in our series. ConclusionsTraumatic elbow dislocations in children, with or without associated fracture, have a good long-term functional outcome with appropriate early management.

Diagnosis, treatment and complications of radial head and neck fractures in the pediatric patient.

Radial head and neck fractures represent up to 14% of all pediatric elbow fractures and can be a difficult challenge in the pediatric patient. In up to 39% of proximal radius fractures, there is a concomitant fracture, which can easily be overlooked on the initial standard radiographs. The treatment options for proximal radius fractures in children range from non-surgical treatment, such as immobilization alone and closed reduction followed by immobilization, to more invasive options, including closed reduction with percutaneous pinning and open reduction with internal fixation. The choice of treatment depends on the degree of angulation and displacement of the fracture and the age of the patient; an angulation of less than 30 degrees and translation of less than 50% is generally accepted, whereas a higher degree of displacement is considered an indication for surgical intervention. Fractures with limited displacement and non-surgical treatment generally result in superior outcomes in terms of patient-reported outcome measures, range of motion and complications compared to severely displaced fractures requiring surgical intervention. With proper management, good to excellent results are achieved in most cases, and long-term sequelae are rare. However, severe complications do occur, including radio-ulnar synostosis, osteonecrosis, rotational impairment, and premature physeal closure with a malformation of the radial head as a result, especially after more invasive procedures. Adequate follow-up is therefore warranted.

Not all that looks fractured is broken—multipartite humeral epicondyles in children

ObjectiveMultipartite epicondyles may mimic fractures in the setting of pediatric elbow trauma. This study examines the prevalence of multipartite epicondyles during skeletal development and their association with pediatric elbow fractures.Materials and methodsIn this retrospective analysis, 4282 elbow radiographs of 1265 elbows of 1210 patients aged 0–17 years were reviewed. The radiographs were analyzed by two radiologists in consensus reading, and the number of visible portions of the medial and lateral epicondyles was noted. For elbows in which epicondylar ossification was not yet visible, the epicondyles were already fused with the humerus or could not be sufficiently evaluated due to projection issues or because osteosynthesis material was excluded. In total, 187 elbows were included for the lateral and 715 for the medial epicondyle analyses.ResultsNo multipartite medial epicondyles were found in patients without history of elbow fracture, whereas 9% of these patients had multipartite lateral epicondyles (p < 0.01). Current or previous elbow fractures increased the prevalence of multipartite epicondyles, with significant lateral predominance (medial epicondyle + 9% vs. lateral + 24%, p < 0.0001). Including all patients regardless of a history of elbow fracture, multipartite medial epicondyles were observed in 3% and multipartite lateral epicondyles in 18% (p < 0.0001). There was no gender difference in the prevalence of multipartition of either epicondyle, regardless of a trauma history.ConclusionMultipartite medial epicondyles occur in patients with current or previous elbow fractures only, whereas multipartite lateral epicondyles may be constitutional. Elbow fractures increase the prevalence of multipartite epicondyles on both sides, with significant lateral predominance.Key Points• Multipartite medial epicondyles should be considered of traumatic origin.• Multipartite lateral epicondyles may be constitutional.• Elbow fractures increase the prevalence of multipartite epicondyles on both sides with lateral predominance.

Clinical and functional outcomes of pediatric elbow dislocations: Level 1 tertiary trauma center experience

Background/Aim: Traumatic elbow dislocations have been reported as uncommon in pediatric population. Because of low frequency, there are not many studies on the subject in the literature. The aim of this study was to retrospectively evaluate the radiological and functional results of pediatric patients treated for elbow dislocations in a level-1 tertiary trauma center and to compare the results of simple and fractured dislocations. Methods: This is a retrospective cohort study of a single center experience diagnosed with pediatric elbow dislocations between 2015 and 2019. The cases were evaluated by dividing them into two groups as simple dislocations and fracture dislocations. Demographic features, injury mechanism, treatment, complications and Mayo elbow performance score (MEPS) were evaluated. Results: Fifty-seven patients, (46 male/ 11 female), were included in the study, with a mean age of 11.1 (3-15) years. Mean follow up time was 27.2 (12-51) months. While 30 patients had fracture dislocations, 27 patients had simple dislocations. Of 30 patients with fracture dislocations, 19 were operated. Nonunion in the medial epicondyle in five patients, AVN (avascular necrosis) in radial head in two patients, heterotrophic ossification in one triceps, and recurrent dislocation in one patient were detected. According to MEPS, 42 (73%) of 57 patients were excellent, 12 (21%) good, one (2%) moderate, and two (4%) poor. According to MEPS, functional results of simple dislocations were found to be better than those of fracture-dislocations, and this result was statistically significant (P

Usefulness of CT as additional imaging examination after X-ray for pediatric elbow trauma

Usefulness of CT as additional imaging examination after X-ray for pediatric elbow trauma

Bruise Location in Supracondylar Humerus Fractures Predicts Specific Neurovascular Injuries.

Purpose:The presence of soft tissue injury in pediatric supracondylar humerus fractures (SCHFs) has been shown to be an independent predictor of any neurovascular injury. Potentially expanding this concept, the specific neurovascular structure injured around the elbow is thought to be dependent upon the direction and magnitude of fracture displacement and subsequent soft tissue injury. Therefore, it was hypothesized that the bruise location following SCHF is indicative of the anatomic location of maximal soft tissue injury and therefore is a specific prognosticator of which neurovascular structure may be injured.Methods:Retrospective chart review of all SCHFs treated at a tertiary pediatric hospital from 2007 to 2017 collected information on bruise location, neurovascular injury patterns, and outcomes. Bruise location was classified as anterior, anterolateral, anteromedial, or posterior. Injury radiographs were reviewed by a blinded pediatric orthopaedic surgeon to neurovascular structure injured.Results:Of 2845 SCHFs identified, 267 (9.4%) had concomitant neurovascular injury—of which 128 (47.9%) met inclusion criteria. Among the vascular injuries, all bruising was anteromedial (28/45, 62.2%, P<0.05) or anterior (17/45, 37.8%, P>0.05). Fractures with anteromedial bruising correlated with median nerve injury (24/27, 88.9%, P<0.05), whereas fractures with anterolateral bruising correlated with radial nerve injuries (24/25, 96.0%, P<0.05). Bruising or radiographic evaluation correctly identified 60.2% and 64.1% of neurovascular injuries, respectively, whereas the combination identified 82.0% of neurovascular injuries correctly. Bruise location identified 23 neurovascular injuries not predicted by radiographic evaluation alone.Conclusion:Bruise location is an important physical examination finding that can be used as an adjunct to improve the diagnostic accuracy of neurovascular injury in SCHFs in conjunction with neurovascular physical examination and radiographic evaluation. SCHFs with anterior or anteromedial bruising should raise concern for vascular injury. In addition, anteromedial bruising is predictive of a median nerve injury and anterolateral bruising is predictive of radial nerve injury. This adjunct diagnostic is particularly helpful in a noncooperative child or if performed by a clinician with limited experience in diagnosing neurovascular injuries or interpreting pediatric elbow radiographs.Level of Evidence:Level IV, case series.

Pediatric elbow arthroscopy: clinical outcomes and complications after long-term follow-up

BackgroundElbow arthroscopy is becoming increasingly important for the treatment of a wide range of acute and chronic elbow pathologies. Even if elbow arthroscopy is technically demanding, in the pediatric population this minimally invasive technique is preferred by many surgeons for the treatment of pathologies such as osteochondritis dissecans (OCD), posttraumatic stiffness (PTS), or elbow posterior impingement (PI). The aim of this study is to evaluate outcomes and safety of elbow arthroscopy in the pediatric and adolescent population after long-term follow-up.Materials and methodsIn this retrospective study, 26 patients younger than 18 years old undergoing elbow arthroscopy were evaluated. All surgeries were performed by a single senior surgeon. Patients were divided into three subgroups based on preoperative diagnosis: OCD, PTS, and PI. After at least 60 months follow-up, several outcome measures, including range of motion (ROM), Mayo Elbow Performance Score (MEPS), and visual analog scale (VAS) were evaluated in relation to preoperative values. The level of patient satisfaction on a five-level Likert scale, any limitation or change in sport activity, and the onset of any possible complications were also evaluated.ResultsIn the study population, we found an improvement in ROM (flexion of 14.4 ± 13.6°, extension of 19.5 ± 13.9°, pronation of 5.8 ± 5.7°, and supination of 8.5 ± 11.6°) and in validated outcome measures (MEPS of 21.0 ± 13.5 points and VAS of 3.8 ± 2.2 points). The satisfaction rate was 4.5, with no dissatisfaction. Eighty-seven percent of patients fully recovered their performance levels, 9% changed sport, and 4% were unable to return to sport. We identified one major and one minor complication, with an overall complication rate of 7.7%. No neurovascular injuries were detected.ConclusionsElbow arthroscopy in a pediatric population can be considered an effective and safe procedure for selected pathologies when performed by an experienced surgeon. At long-term follow-up, we reported excellent clinical outcomes (both objective and subjective), with a relatively low complication rate without permanent injuries.Level of evidenceLevel IV—case series.

Accurate Instance Segmentation in Pediatric Elbow Radiographs.

Radiography is an essential basis for the diagnosis of fractures. For the pediatric elbow joint diagnosis, the doctor needs to diagnose abnormalities based on the location and shape of each bone, which is a great challenge for AI algorithms when interpreting radiographs. Bone instance segmentation is an effective upstream task for automatic radiograph interpretation. Pediatric elbow bone instance segmentation is a process by which each bone is extracted separately from radiography. However, the arbitrary directions and the overlapping of bones pose issues for bone instance segmentation. In this paper, we design a detection-segmentation pipeline to tackle these problems by using rotational bounding boxes to detect bones and proposing a robust segmentation method. The proposed pipeline mainly contains three parts: (i) We use Faster R-CNN-style architecture to detect and locate bones. (ii) We adopt the Oriented Bounding Box (OBB) to improve the localizing accuracy. (iii) We design the Global-Local Fusion Segmentation Network to combine the global and local contexts of the overlapped bones. To verify the effectiveness of our proposal, we conduct experiments on our self-constructed dataset that contains 1274 well-annotated pediatric elbow radiographs. The qualitative and quantitative results indicate that the network significantly improves the performance of bone extraction. Our methodology has good potential for applying deep learning in the radiography’s bone instance segmentation.

Match for Orthopedic Fellowship Programs in the United States: Online Accessibility, Content, and Accreditation Comparison Between Subspecialties and Review of Alternative Resources.

Background: Orthopedic surgery is considered among the highly competitive medical specialties to get in as a career in the United States. San Francisco Match (SF Match) is the matching service for orthopedic subspecialty fellowship programs, and the internet is the main source for applicants to obtain program information in the modern era. We aimed to determine and compare the accessibility, content, and accreditation details of the various orthopedic fellowship programs available at the Match website and alternative online resources.Methods: We studied eight subspecialties (Adult Reconstruction, Musculoskeletal Oncology, Foot and Ankle, Pediatric Orthopedics, Shoulder and Elbow, Orthopedic Spine Surgery, Sports Medicine, and Trauma) in a cross-sectional design during August/September 2019 for programs starting in July/August 2021. We registered the available baseline information at the SF Match site under various categories. We tried to reach the program-specific webpage through SF Match hyperlink and categorized our results into successful (direct and indirect) links and unsuccessful links with subcategorization. We also analyzed the information available at sponsoring society, FREIDA (Fellowship and Residency Electronic Interactive Database), and ACGME (Accreditation Council for Graduate Medical Education) websites.Result: We analyzed 465 programs (874 positions) available through the SF Match website. A standardized program description was available for >80% of the programs in each subspecialty. The availability of a successful link for the program-specific webpage ranges from 35% (Pediatric Orthopedics) to 77% (Sports Medicine). Indirect links were almost twice as common as direct links. The success rates through the sponsoring society webpages vary from 3% (Shoulder and Elbow) to 53% (Pediatric Orthopedics). Failure rates after trying both (the Match and Society links) range from 10% (Musculoskeletal Oncology) to 34% (Shoulder and Elbow). FREIDA provides comprehensive information but is limited to accredited programs. ACGME accreditation rate varied from 14.6% (Foot and Ankle) to 98.9% (Sports Medicine).Conclusion: The selection of a subspecialty fellowship program is crucial for most applicants. There are plenty of resources for the orthopedic fellowship programs' online presence after two decades since the first orthopedic fellowship match inception. Match website is the primary resource for the applicants. All parties could be benefited if both the programs and the sponsoring societies offer adequate online information to the Match, leading to ideal fellow-program matches and improved educational experiences. Our study may stand as a reference for future comparison possibly due to post-COVID evolution in the Match process. We recommend that consistent availability of direct functional program website links, point-based program description, and filter/comparison options may further improve online accessibility and quality of the content of the Match website.

Epidemiological Evaluation of Pediatric Elbow Injuries: A Retrospective Observational Single Center

Abstract Introduction Elbow fractures are the commonest fractures in the pediatric age group. The aim of this study is to evaluate the epidemiology of fresh and neglected pediatric elbow fractures in a hilly state of India with a limited health care facility. Materials and Methods This was a retrospective observational single-center study conducted between January 2019 and January 2021. Results Supracondylar was the most common fracture in 58.7% of patients followed by lateral condyle and proximal radius fracture. The highest number of fractures were reported in the age group of 5 to 8 years. In addition, 19% of patients presented with associated complications, 8% of patients had combination injuries of the ipsilateral upper limb, 16% of patients presented to the hospital 1 week after the trauma, 48% of patients had the first contact with a bonesetter/native practitioner. Conclusion Supracondylar fracture was the most common elbow fracture followed by lateral condyle. The most common involved age group was 5 to 8 years. A significant number of elbow fractures are mismanaged by native practitioners in rural India.

Paediatric elbow fractures and public play spaces: adherence to standards for children’s playground equipment and surfacing

BackgroundSupracondylar humerus fractures (SCHF) are the most common fractures sustained following a fall onto an outstretched hand among healthy children, and one of the leading causes of hospital admission and...

Rate of utilization of physical therapy after common pediatric elbow fractures.

Supracondylar, medial epicondyle and lateral condyle fractures are the three most common elbow fractures in pediatric patients. There is a paucity of literature discussing the utilization of physical therapy following these injuries. The purpose of the current study was to determine the rate of utilization of physical therapy after these injuries as well as determine factors that may affect the need for physical therapy after common elbow fractures in pediatric patients. We retrospectively chart reviewed all pediatric elbow fractures that were managed at a major pediatric health system from 2013 to 2020. This study included patients under the age of 18 years and utilized International Classification of Diseases (ICD)-9, ICD-10 and Current Procedural Terminology codes to identify patients. Descriptive statistics, chi-square test and multivariate analyses were performed to compare differences between groups. This study included 2037 patients. Overall, 90 patients (4.4%) received a physical therapy referral at an average time of 90.1 (± 54.6) days between discharge and referral. The rate of physical therapy was 2.7% after nonoperative and 6.3% after operative treatment (P < 0.01). Overall, patients that sustained medial epicondyle fractures were prescribed physical therapy at a higher rate (19.8%) than supracondylar (1.4%) or lateral condyle fractures (5.0%) (P < 0.01). For each fracture type, physical therapy utilization was higher among those treated operatively versus those treated nonoperatively (P < 0.01). Physical therapy is more commonly prescribed for patients with medial epicondyle fractures and patients that received operative management. Additional research is needed to determine clinical indications and efficacy of physical therapy after common elbow fractures in pediatric patients.

Application of ultrasound in the closed reduction and percutaneous pinning in supracondylar humeral fractures

BackgroundUltrasound examination can be applied to the diagnosis of pediatric elbow fracture. This study aims to analyze the application value of ultrasound in the surgical treatment of supracondylar humeral fractures.Methods64 children with supracondylar humeral fractures were treated with ultrasound-guided closed reduction and percutaneous pinning (CRPP), 31 patients were treated with CRPP under radiography guidence. The reduction effect of supracondylar humeral fractures was determined through the perioperative ultrasound images of the lateral, medial and posterior aspects of the elbow. Percutaneous pinning was performed after supracondylar humeral fractures were well reduced. A follow-up examination was performed and all the patients were evaluated according to Flynn’s criteria.ResultsThe mean duration of surgery was 58.3 min (42–108 min) in the ultrasound group and 41.5 min (24-63 min) in the radiography group (P < 0.05). The mean carrying angle was 8.2° (0°–15°) in the ultrasound group and 9.4°(3°–16°) in the radiography group; The mean Baumann’s angle was 75.5°(60°–85°) in the ultrasound group and 73.4°(62°–82°) in the radiography group; The mean lateral humerocapitellar angle was 38.4° (26°–54°) in the ultrasound group and 41.6°(29°–52°) in the radiography group; No significant differences were observed between the two groups. According to the Flynn’s criteria, 49 (76.6%) patients had excellent, 10 (15.6%) patients achieved good, 3 (4.7%) patients showed fair results and 2 (3.1%) patients achieved poor results in the ultrasound group; 22 (70.9%) patients had excellent, 6 (19.4%) patients achieved good, 2 (6.5%) patients showed fair results and 1 (3.2%) patients achieved poor results in the radiography group; No statistically significant difference was noted between the results of these two groups (P > 0.05). After surgery, three patients had pin tract infection. One patient had ulnar nerve neurapraxia in the radiography group. No cases with Volkmann’s contracture were reported.ConclusionUltrasound-guided CRPP is a safe and reliable surgical treatment of pediatric supracondylar humeral fractures.Trial registration Retrospectively registered.