Shoulder Joint Injury Research Articles

The diagnostic value of MRI segmentation technique for shoulder joint injuries based on deep learning

This work is to investigate the diagnostic value of a deep learning-based magnetic resonance imaging (MRI) image segmentation (IS) technique for shoulder joint injuries (SJIs) in swimmers. A novel multi-scale feature fusion network (MSFFN) is developed by optimizing and integrating the AlexNet and U-Net algorithms for the segmentation of MRI images of the shoulder joint. The model is evaluated using metrics such as the Dice similarity coefficient (DSC), positive predictive value (PPV), and sensitivity (SE). A cohort of 52 swimmers with SJIs from Guangzhou Hospital serve as the subjects for this study, wherein the accuracy of the developed shoulder joint MRI IS model in diagnosing swimmers’ SJIs is analyzed. The results reveal that the DSC for segmenting joint bones in MRI images based on the MSFFN algorithm is 92.65%, with PPV of 95.83% and SE of 96.30%. Similarly, the DSC for segmenting humerus bones in MRI images is 92.93%, with PPV of 95.56% and SE of 92.78%. The MRI IS algorithm exhibits an accuracy of 86.54% in diagnosing types of SJIs in swimmers, surpassing the conventional diagnostic accuracy of 71.15%. The consistency between the diagnostic results of complete tear, superior surface tear, inferior surface tear, and intratendinous tear of SJIs in swimmers and arthroscopic diagnostic results yield a Kappa value of 0.785 and an accuracy of 87.89%. These findings underscore the significant diagnostic value and potential of the MRI IS technique based on the MSFFN algorithm in diagnosing SJIs in swimmers.

Shoulder girdle injuries in volleyball players: structure, symptoms, cause and prevention. A narrative review

Shoulder joint injuries are a major concern in volleyball, particularly among elite athletes who undergo rigorous training sessions and frequently participate in competitions. Given that volleyball is a polystructured sport that requires volleyball players to constantly change the amplitude of movement in the shoulder joint, frequent injuries such as subacromial impact syndrome, compression of the suprascapular nerve, bursitis and tendinitis of the rotator cuff occur. In order to prevent injuries, prevention programs are increasingly introduced today. Consequently, the aim of this research was to describe the structure and prevention of shoulder girdle injuries in volleyball players. Prevention programs developed by researchers have been shown to be effective in reducing the prevalence of shoulder injuries. Prevention programs include adequate warming up, strengthening and stretching of the muscles of the shoulder girdle, as well as correct execution of technical elements. The development and implementation of individualized prevention and rehabilitation programs can significantly contribute to reducing the risk of injuries and prolonging the sports career of volleyball players.

The efficacy of movement therapy and electrical stimulation with acupuncture on shoulder joint injuries for students of the College of Physical Education and Sports Sciences

This research aims to determine the efficacy of movement therapy and electrical stimulationcombined with acupuncture for shoulder joint ailments among College of Physical Educationand Sports Sciences/Khanaqin students. The researchers employed the experimental approach,which consists of two experimental groups, one with a pre-test and the other with a post-test.The research sample was purposefully selected and comprised of (16) male students dividedinto two experimental groups of eight individuals each. After gathering data utilizing themeasures and statistically processing it, the most important findings were that the therapyprogram combining workouts and electrical stimulation with Chinese acupuncture has abeneficial effect on shoulder joint rehabilitation. By developing muscle strength and ligamentsworking on the joint, as well as working on the therapeutic program to improve the variablesof the range of motion of the shoulder joint, The researchers recommend using therapeuticexercises and electrical stimulation with Chinese acupuncture For its better effect in improvingmuscle strength, ligaments, tendons, and range of motion of the shoulder joint

Internal and External Rotators Muscle Strength Ratio and Acromio-Humeral Distance as Predictors of Shoulder Injuries in Volleyball Players

Abstract Purpose We aimed to investigate the ratio between strength of internal and external rotators of shoulder using handheld dynamometer and acromio-humeral distance actively and passively using musculoskeletal ultrasound to identify a relation between strength imbalance and shoulder joint injuries in Egyptian volleyball players. Methods A case control study, carried out on 60 volleyball players, subdivided into 2 subgroups, 30 with shoulder pain (injured group) and 30 apparently healthy players as a control group. The internal and external rotator muscles were measured with and held dynamometer, and acromio- humeral distance was measured using musculoskeletal ultrasound. Results injured group included 10 female players (33.3%) and 20 male players (66.7%), age ranged between 16-30 years old, while control group included 4 females (13.3%) and 26 males (86.7%). Internal and external rotation strength ratio was less than 0.9 in injured group in the dominant arm, in favor of the normal group with statistical difference between them (p < 0.004). Acromio-humeral distance actively in injured group ranged from 0.45 to 0.87cm with mean ±SD of (0.64±0.07), less than normal group which ranged from 0.7 to 1cm with a mean ±SD of (0.79±0.08) (p < 0.000) Conclusion Weakness of external rotators muscles strength will decrease ratio between external rotator/internal rotator muscles, reducing the acromio-humeral distance especially during abduction, leading to shoulder injuries among volleyball players.

Musculoskeletal injuries in bodybuilders: A brief review with an emphasis on injury mechanisms

In this article we reviewed the literature on injuries and their mechanisms in bodybuilders. Bodybuilding is a weightlifting sport where the main goal is to increase muscle mass while maitaining body symmetry. From a biomechanical point of view, it is important to analyse technical performance of exercises to improve sports technique. Compound exercises based on the development of muscle hypertrophy must be included. The training is different before and during season, in pre-season it is based on reduction of body fat to a low level and a high volume of aerobic exercise. Adequate nutrition, use of supplements and banned substances are widespread in the sport. In that case athletes should be very careful for banned substances in accordance with WADA Code. The most commonly performed exercises where injuries happen are the squat, deadlift and benchpress. The majority of injuries (60 %) are acute, with 93 % shoulder joint injuries, 85 % lower back injuries and 80 % knee injuries. The incidence of injuries is low compared to other sports, between 0.24/1000 hours of training or 0.12 injuries per lifter per year. The most common type of injury is muscle strain, followed by tendinitis and cartilage wear. So it is therefore important to identify risk factors to allow the development of appropriate prevention programs. Muscle ruptures are common with high eccentric loads, with pectoralis major tendon being the most vulnerable to be injured. Than followed by a rupture of biceps femoris during the deadlift exercise, during sudden flexion of the hip joint while the knee is extended. Eccentric contraction and rupture also occurs in the quadriceps muscle, which lifters try to avoid by performing low-bar squat. Uncontrolled abdominal pressure during high-weight exercises causes discus hernias, which lifter can prevent by breathing correctly and using strong muscle stabilizers. The most well-known injury of all is elbow burzitis or »Bodybuilders elbow« due to repetitive flexion and extension movements of elbow joint. To prevent this injuries we have to include preventive measures such as medical check-ups, education of athletes, ensuring safety in competitions, appropriate training and load distribution, treating the body as a whole and regular equipment check-ups.

Acute Effect of Static and Dynamic Stretching on Activating Scapular Stabilizer Muscles During Pull-Up Movement in Gymnasts

Background and Aims Today, there is an argument about the effect of various stretching movements on the performance of athletes. Therefore, this study investigated the acute effect of static and dynamic stretching on muscle activity and co-contraction of scapular stabilizer muscles during pull-ups in gymnasts. Methods According to the inclusion and exclusion criteria, 15 professional gymnasts with a mean age of 23.25±2.57 years, height of 170.93±5.88 cm, and weight of 64.54±5.06 kg were selected as research samples and divided into three subgroups (each with 5 athletes). In the pre-test, subjects performed pull-up activity, and muscle activities of the serratus anterior, upper trapezius, middle trapezius, and lower trapezius muscles were measured using a biometric electromyography device. Then, each subgroup performed a different stretching protocol in each session, and a post-test was conducted like the pre-test. Repeated measures analysis of variance, the Bonferroni post hoc test, and the paired t test were used to test the study hypotheses. Results The results showed that static and dynamic stretching caused a significant decrease and increase in muscle activity in both concentric and eccentric phases, respectively. Also, the results showed that dynamic stretch caused a reduction in co-contraction of the serratus anterior and middle trapezius muscles in both concentric and eccentric phases. In addition, there is a significant difference between the effect of static and dynamic stretch and between dynamic stretch and control on the co-contraction of the serratus anterior and middle trapezius muscles in the concentric and eccentric phases. Conclusion The results showed that the co-contraction of the serratus anterior and middle trapezius muscles decreased after using dynamic stretching. Therefore, considering the importance of muscle co-contraction in the occurrence of shoulder joint injuries and preventing injuries in the shoulder joint of gymnasts, it is suggested that coaches and gymnasts use dynamic stretching exercises more carefully.

The Effect of Suspension Training on Some Factors Related to the Shoulder Injuries in Athletes with Scapular Dyskinesis

This study aimed to examine the effect of suspension training on some factors related to the shoulder injuries in athletes with scapular dyskinesis. The present study employed a semi-experimental pre-test and post-test design. Thirty male athletes with scapular dyskinesis were randomly allocated into either the training or control group, with 15 individuals in each. Identification of scapular dyskinesis was conducted through the utilization of a lateral scapular slide test. During the pre-test stage, the shoulder joint muscles strength, proprioception and functional stability, were assessed via manual dynamometer, upper body functional balance test, and imaging methods, respectively. Subsequently, the training group participated in an 8-week suspension training, with three sessions per week. Following the 8-week intervention period, all participants underwent the same measurements administered during the pre-test stage. Statistical analysis was conducted using a two-way analysis of variance at a significance level of P≤0.05 to analyze the research findings. The findings from the two-way analysis of variance indicated that, during the post-test stage, the experimental group showed significant enhancements in muscle strength, functional stability, and accuracy of shoulder joint proprioception in comparison to the control group. The study's results suggest that suspension training used in this study can be employed to enhance shoulder muscle strength, functional stability, and accuracy of shoulder joint proprioception, which may assist in ameliorating disorders resulting from scapular dyskinesis. Furthermore, the findings imply that incorporating these exercises into training regimens could help prevent shoulder joint injuries.

The effect of a rehabilitation curriculum according to some kinematic variables in developing the range of motion for people with shoulder joint injuries in the effectiveness of pushing weights for young people

The effect of a rehabilitation curriculum according to some kinematic variables in developing the range of motion for people with shoulder joint injuries in the effectiveness of pushing weights for young people

The effect of strength and flexibility exercises on the rehabilitation of wrestling players with shoulder joint injuries

The effect of strength and flexibility exercises on the rehabilitation of wrestling players with shoulder joint injuries

On the issue of exoskeletal rehabilitation of shoulder periarthritis after a gunshot wound of the scapular area

Modern comprehensive treatment of wounded and injured with combat injuries of limbs should include not only surgical treatment itself, but also effective rehabilitation for maximum restoration of the function of injured limbs. The use of exoskeletons in the rehabilitation of patients with shoulder blade and shoulder joint injuries can accelerate muscle strengthening, restore motor activity and range of motion, as well as improve the results of treatment and the quality of life of patients. The use of exoskeletons in the rehabilitation of patients with shoulder blade and shoulder joint injuries is an effective and promising approach.

The long head of the biceps tendon undergoes multiaxial deformation during shoulder motion

The long head biceps tendon (LHBT) is presumed a common source of shoulder joint pain and injury. Despite common LHBT pathologies, diagnosis and preferred treatment remain frequently debated. This Short Communication reports the development of a subject-specific finite element model of the shoulder joint based on one subject’s 3D reconstructed anatomy and 3D in vivo kinematics recorded from bone-fixed electromagnetic sensors. The primary purpose of this study was to use the developed finite element model to investigate the LHBT mechanical environment during a typical shoulder motion of arm raising. Furthermore, this study aimed to assess the viability of material models derived from uniaxial tensile tests for accurate simulation of in vivo motion. The findings of our simulations indicate that the LHBT undergoes complex multidimensional deformations. As such, uniaxial material properties reported in the existing body of literature are not sufficient to simulate accurately the in vivo mechanical behavior of the LHBT. Further experimental tests on cadaveric specimens, such as biaxial tension and combinations of tension and torsion, are needed to describe fully the mechanical behavior of the LHBT and investigate its mechanisms of injury.

Surgical treatment of patients with shoulder joint stiffness and injury to the glenoid labrum

Background. Most of our colleagues, upon discovering injuries to the glenoid labrum or other soft tissue structures of the shoulder joint in a patient, perform surgical interventions without paying attention to changes in its capsule. Objective: to compare the treatment outcomes of patients with shoulder contracture who underwent arthroscopic capsular release with re-fixation of the glenoid labrum versus those who underwent only re-fixation of the glenoid labrum.
 Materials and methods: The study included 98 patients with shoulder joint stiffness and glenoid labrum injury. The patients were divided into two groups: group 1 underwent re-fixation of the glenoid labrum and arthroscopic capsular release, while group 2 underwent re-fixation of the glenoid labrum without arthroscopic capsular release.
 Results: Three months after the operation, in group 2, the mean functional outcome according to the Constant Shoulder Score scale was slightly worse than in group 1 and ranged from 14.5 ± 6.2 points, while in group 1, the mean functional outcome was 8.5 ± 6 points (p = 0.031). Six months after the operation, in group 1, the mean functional outcome according to the Constant Shoulder Score scale was 5.1 ± 5.6 points, while in group 2, it was 10.1 ± 4.1 points (p = 0.024). Conclusion: The results of treating patients with secondary shoulder stiffness who underwent arthroscopic capsular release and fixation of the glenoid labrum were better according to the Constant Shoulder Score and the VAS scale at both 3 and 6 months after the operation than the results of treating patients who underwent only fixation of the glenoid labrum without arthroscopic capsular release.

The Possibilities of Standard Radiography with the Use Processing Radiographic Images and Multisection Computed Tomography when Planning a Reverse Total Shoulder Arthroplasty

The aim of the study was to compare the informative value of standard radiography of the shoulder joint using computer processing software with the capabilities of multislice computed tomography (MSCT) before surgery in the volume of reverse total shoulder arthroplasty. The radiographs of shoulder joints in standard projections and computed tomograms of 30 patients who were observed with the consequences of shoulder joint injuries before surgery in the volume of reverse total shoulder arthroplasty. It is clearly shown that the use of specialized software provides additional information when choosing the size of the shoulder component of the endoprosthesis, allows for virtual restoration of the anatomy of the proximal humerus with severe post-traumatic deformation and limited mobility of the shoulder joint. However, during the program processing of X-ray images of the shoulder joint, no additional information was obtained when evaluating the geometric parameters of the shoulder blade glenoid. The data on the geometric characteristics of the glenoid, established using specialized software, were comparable with the results of image processing carried out in manual mode. Reliable characteristics, most important for preoperative planning of the positioning of the glenoid component of the endoprosthesis, could be obtained only by the results of MSCT.

Platelet-rich plasma-derived exosomes promote rotator cuff tendon-bone healing

BackgroundRotator cuff tear (RCT) is the most common type of shoulder joint injury, platelet-rich plasma-derived exosomes (PRP-exos) are highly promising in tissue repair and regeneration. The purpose of this study was to determine the function of PRP-exos in rotator cuff tendon-bone healing. MethodsPRP-exos were isolated from the rabbit whole blood by differential ultracentrifugation and characterized through transmission electron microscopy assay, nanoparticle tracking analysis, and western blotting. Alkaline phosphatase and Von Kossa staining were used to show tendon-derived stem cell (TDSC) differentiation. RT-qPCR and western blotting were performed to detect COL II, SOX-9, and TIMP-1. To determine the therapeutic effects of PRP-exos in vivo. Thirty New Zealand white rabbits were divided into control, model, and PRP-exos groups. The RCT animal model was constructed. The changes in tendon-bone tissue were determined by HE staining. Contents of COL-II, SOX-9, and TIMP-1 were determined by immunohistochemistry staining. ResultsPRP-exos were successfully isolated from rabbit blood. PRP-exos promoted TDSC proliferation and differentiation and also induced tendon-specific markers COL II, SOX-9, and TIMP-1 production. In vivo study revealed that PRP-exos promoted early healing of injured tendons. Rabbits treated with PRP-exos had better tissue arrangement in the tear site. Additionally, the contents of COL II, SOX-9, and TIMP-1 were also increased in the RCT rabbit model after PRP-exos treatment. ConclusionsPRP-exos enhanced tendon-bone healing by promoting TDSC proliferation and differentiation. This finding indicates that PRP-exos can serve as a promising strategy to treat rotator cuff tendon-bone healing.

A cross sectional study of high-resolution ultrasound and magnetic resonance imaging findings in shoulder joint pain in a tertiary care hospital in central India

Introduction: Shoulder joint injuries are frequent. The shoulder joint is particularly prone to joint dislocation because of its distinctive anatomy. There are several causes of the sore shoulder, however shoulder impingement is the most common one due to its widespread causes. High-resolution ultrasonography (USG) and magnetic resonance imaging (MRI) are the primary imaging modalities for assessing suspected rotator cuff injuries. Ultrasonography is a method of first choice for evaluating rotator cuff injuries due to its widespread availability, lower price, and improved tolerance. Patients with questionable USG results may be given an MRI. Aim and objective: To evaluate high-resolution ultrasound and MRI findings in shoulder joint pain. Methods: A prospective cross-sectional study will be conducted on 93 patients, who come to Acharya Vinoba Bhave Rural hospital associated with Jawaharlal Nehru medical college, a tertiary care center situated in the state of Maharashtra in India between the time frame of July 2022 to July 2024. Patients with shoulder joint pain will be submitted to a primary investigation ultrasound, followed by an MRI if there is any concern, according to the inclusion criteria. Using statistical methods, the strength of agreement between ultrasound and MRI will be found out. Outcome measures: The outcome will correlate ultrasound and MRI findings in shoulder joint pain and describe the relationship between the two.

Cross-Sectional Study to Explore the Prevalence of Shoulder Impingement and Its Association with Training Volume Among Cricketers in Sport Academies of Faisalabad

Purpose: Cricketers are vulnerable to high-risk injuries. Throwing and striking are the two activities that put the most strain and effort at the shoulder joint and leads to shoulder impingement and other problems. To explore the prevalence of shoulder impingement and its association with training volume among cricketers in sport academies of Faisalabad.
 Methodology: It was cross-sectional study. Study was conducted from November 2018 to January 2019. Sample size of the study was 116. Convenient sampling technique was used to enrolled participants in study. Inclusion criteria of the study were the cricket players of age between 13 to 22 years, practice regularly in sport academies of Faisalabad. Players of Faisalabad cricket academies including, Saeed Ajmal International Cricket Academy, Eden cricket & Fitness center, Combined cricket club, National Cricket Club, Lyallpur Gymkhana cricket club and Prince Gymkhana Cricket Club, Faisalabad were interviewed and evaluated for the presence of shoulder impingement. Data was analyzed by using SPSS version 22. Data was presented in forms of tables and graphs.
 Findings: Out of 116 cricket players, 28.44% were spinners, 41.37% were fast bowlers and 30.17% were batsmen. Shoulder impingement was found to be present in 49(42%) of the cricketers in sport academies of Faisalabad. Chi- square test showed a statistically significant association between shoulder impingement and training volume (p<0.05).
 Recommendations: Shoulder impingement had a prevalence of 42% in cricketers of Faisalabad. A statistically significant association was found between shoulder impingement and training volume among cricketers of sport academies in Faisalabad. This study was informed by the BiomechanicalTheory, emphasizing the importance of considering mechanical stressors on the shoulder region in cricketers. To reduce the occurrence of shoulder pain among cricket players, practitioners should emphasize proper biomechanical techniques in training programs, with a focus on shoulder joint stability and injury prevention strategies. Policymakers should advocate for sports injury prevention programs that incorporate fundamental biomechanical concepts into training curricula, ensuring cricket players' long-term shoulder health and ensuring the sport's long-term viability.

Preventive Assessments and Training for Shoulder Joint Injury

Shoulder joint injury often affects athletes' performance, training, and daily life, and it costs more money and time to treat, so it is very important to prevent shoulder joint injury. This paper mainly provides assessment and training ideas for preventing shoulder injury to make athletes achieve better results and reduce injuries. Many shoulder joint examinations such as Jobe, Neer, the Hawkins Kennedy, the pain arc, and the Allen tests can simultaneously be used for preventive evaluation. At present, there are few preventive assessments. This paper gives some ideas from the assessment's breadth, content, timing, and modernization perspective. Preventive assessment is mainly to screen out risk factors for high-risk people who do not suffer from shoulder joint disease or those who recover from shoulder joint injury to provide better plans for follow-up daily life and training and improve the quality of life and sports. Preventive evaluation provides a good reference for preventive training. The main purpose of preventive training is to prevent potential upward risks and improve athletes' sports levels. Functional training is mainly aimed at strengthening the weak chain so that the muscle group can reach a more stable and balanced state, so better cooperation with the completing Fascia is easily ignored in ordinary training. Fascia training can better play the function of muscles, increase the proprioception of muscles, and improve the quality of action completion.

LESÃO ESPORTIVA E REABILITAÇÃO DA ARTICULAÇÃO DO OMBRO NO VOLEIBOL

ABSTRACT Introduction: Volleyball is a high-intensity sport, and sports injuries are not rare. The shoulder joint has the highest incidence of injury among the most injured joints. Objective: Study the shoulder joint injury during volleyball practice and explore the effects of its rehabilitation. Methods: The article used an experimental control with 40 athletes with shoulder joint injuries, randomly divided into experimental and control groups. The experimental group performed comprehensive shoulder joint rehabilitation training lasting 30 minutes daily. The control group performed traditional massages of the same duration and frequency. The experiment lasted 8 weeks, and the data on the shoulder joint injuries and the performance of the volleyball players were recorded and statistically analyzed. Results: The experimental group's scores stood out compared to the control group regarding flexibility and functional performance. Conclusion: Integral rehabilitation training showed greater efficacy in shoulder joint rehabilitation and may effectively reduce the risk of secondary sports injuries in athletes. Its promotion in the current rehabilitation and sports training scenario is valid and can be promoted. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

Intensity of arm swing exercise with music-movement synchrony in untrained young adults

IntroductionThe research aimed to study the intensity of arm swing exercise (ASE) with different tempi of music-movement synchrony in untrained young adults and to investigate the effect of different music tempi on heart rate and oxygen consumption.MethodsParticipants were 30 healthy volunteers (15 males and 15 females), 20.67 ± 1.37 years and low-to-moderate physical activity. They performed ASE synchronised with music at a tempo of 60 and 140 bpm with a random sequence. They were measured for heart rate and oxygen consumption using a Quark SPIRO (COSMED) before and after the ASE for 6 minutes of each tempo. They rested for at least 15 minutes between music tempi during the ASE. The intensity of ASE with music-movement synchrony of each tempo was calculated as a percentage of maximum heart rate (%HRmax) and percentage maximum oxygen consumption (%VO<sub>2max</sub>).ResultsThe %HRmax of all participants post-ASE at 60 and 140 bpm were 58.64 ± 8.82 and 60.12 ± 8.95%, respectively. The %VO<sub>2max</sub> of all participants post-ASE at 60 and 140 bpm were 38.65 ± 11.36 and 40.17 ± 10.71%, respectively. There was no significant difference in HR and VO2 of ASE between music tempi.ConclusionsThe ASE with music-movement synchrony at 60 and 140 bpm is a low-intensity aerobic exercise, so is a suitable choice for people with low physical activity. Furthermore, the faster tempo did not significantly alter the intensity, therefore, we recommend selecting the slower music tempo at 60 bpm to avoid repetitive shoulder joint injury.

The Outcomes of Three Surgical Approaches for Acromioclavicular Dislocation Treatment: Findings from Vietnam

Background: Acromioclavicular (AC) dislocation, one of the most common shoulder joint injuries, can be treated by several surgical methods. However, there are still few records about the treatment quality. This study aims to describe the outcomes of three surgical methods for acromioclavicular dislocation treatment at Viet Duc University Hospital, Vietnam. Methods: A cross-sectional study was conducted on 80 patients diagnosed with AC. We retrospectively collected data in the medical records and re-examined the patients. Results: There was no difference between the three groups of surgical approaches relating to the patient’s characteristics, except for the time from the accident to hospital admission. The median length of stay after surgery was highest in the Hook plate group (median (IQR) = 5(2) days), while it was lowest in the K-wire group (median (IQR) = 3(1) days) (p < 0.05). There is statistical significance in the difference of coracoclavicular distance between pre and post-operation in all three surgical method groups (p < 0.001). Conclusion: All of the methods—Hook plate, K-wire, and TightRope—were associated with optimistic outcomes and restored initial anatomy. While the three surgical methods are both safe and effective, the K-wire method is associated with a shorter length of stay and might be economical.