scholarly journals THE IMPROVEMENT OF PCA ALGORITHM AND ITS APPLICATION IN THE PREDICTION OF ELBOW KNEE JOINT INJURY

2021 ◽  
Vol 27 (5) ◽  
pp. 518-522
Author(s):  
Zhenhua Liu
Keyword(s):  
Knee Injuries ◽  
Knee Joints ◽  
Detection Accuracy ◽  
Level Of Evidence ◽  
Joint Injury ◽  
Training Time ◽  
Elbow Injury ◽  
Group A ◽  
Group B ◽  
Injury Models

ABSTRACT Objective: There were many constraints produced by training time and joint injury to analyze the influence of the training intensity on the elbow and knee joints of athletes during the training process. Methods: An improved algorithm-based master component analysis (PCA) modeling method is proposed .1 4 4 athletes were selected in xxx and compared in three groups. Results: The improved PCA models for injury prediction were applied to athletes from group A, the traditional injury models for prediction were adopted for athletes from group B, and athletes from group C received the hospital physical examinations. The results showed that the accuracy of elbow injury in group A due to excessive exercise was 66.86%, the accuracy of hospital physical examination in group C was 67%, and the accuracy of the traditional algorithm in group B was 50%, finding that the accuracy of group A was obviously different from group B (P < 0.05). Compared with other injuries caused by excessive friction, the detection accuracy of knee injuries caused by excessive friction in group A was 62%, that in group B was 44%, and that in group C was 63%. There was a statistically marked difference between groups A and B (P < 0.05). Conclusions: A PCA - based model of athletes’ overtraining injury has high accuracy and adaptability, predicting elbow injury. Level of evidence II; Therapeutic studies - investigation of treatment results.

De Quervain Disease in Volleyball Players

2005 ◽  
Vol 33 (3) ◽  
pp. 424-427 ◽  
Author(s):  
Costantino Rossi ◽  
Paolo Cellocco ◽  
Enrico Margaritondo ◽  
Francesco Bizzarri ◽  
Giuseppe Costanzo
Keyword(s):  
Case Series ◽  
Level Of Evidence ◽  
Sports Activity ◽  
Training Time ◽  
Volleyball Players ◽  
Stenosing Tenosynovitis ◽  
Group A ◽  
De Quervain ◽  
Group B ◽  
De Quervain Disease

Background Chronic inflammatory tendon diseases in athletes are frequent, and they often result from modifications in normal kinematics of a tendon associated with a patient's anatomical determinants. De Quervain stenosing tenosynovitis is an inflammatory disease of tendons of the first dorsal compartment of the wrist. There is no literature about this disease concerning professional volleyball players. Hypothesis Limited, multiple trauma on the dorsal radial portion of the wrist, associated with long training times, can be involved in the pathogenetic process of de Quervain disease in professional volleyball players. Study Design Case series; Level of evidence, 4. Materials and Methods The authors studied 45 consecutively enrolled volleyball players (27 professional, 18 nonprofessional) satisfying clinical criteria for the diagnosis of de Quervain stenosing tenosynovitis. All patients were evaluated by questionnaire and physical examination. They were divided into group A (mild) and group B (severe) based on the severity of the symptoms and physical findings; they were followed for a mean of 37 months. Results Total training quantity (mean weekly training time multiplied by mean sports activity duration) in group A was 74, whereas it was 155 in group B (P <. 01). No neuropathies were found in group A, whereas they were found in 3 patients in group B. Fifty percent of surgical patients had a longitudinal fibrous septum, whereas 54% showed multiple tendon sheaths making up the abductor pollicis longus tendon. Conclusions This study shows that increased training time and consequent microtrauma associated with professional volleyball activity can increase the likelihood of de Quervain disease.

scholarly journals Surgical Treatment Outcomes for Everted Bursal Flap of Delaminated Supraspinatus Tear

2021 ◽  
Vol 9 (3) ◽  
pp. 232596712199042
Author(s):  
Hyungsuk Kim ◽  
Chu Hwan Byun ◽  
Sung Bin Han ◽  
Hyun Seok Song
Keyword(s):  
Los Angeles ◽  
Constant Score ◽  
Early Postoperative Period ◽  
Level Of Evidence ◽  
Supraspinatus Tear ◽  
Functional Scores ◽  
Group A ◽  
Vas Scores ◽  
Group B

Background: Although everted bursal flaps of delaminated tears have been reported, few studies have reported radiologic images, arthroscopic findings, and clinical results after repair. Purpose: To compare the repair outcomes of everted delaminated tears with those of classic delaminated supraspinatus tears. Study Design: Cohort study; Level of evidence, 3. Methods: Among 153 patients who underwent arthroscopic rotator cuff repair for a delaminated supraspinatus tear, everted bursal flap tears were observed in 24 patients upon arthroscopy (group A). Another 24 patients with classic delaminated supraspinatus tears, matched for age and sex, were selected for group B. Magnetic resonance imaging (MRI) and ultrasonography were performed preoperatively and postoperatively. Patients were evaluated using a visual analog scale (VAS) for pain as well as functional scores (American Shoulder and Elbow Surgeons [ASES] score, Constant score, and University of California Los Angeles shoulder score). Scores were compared preoperatively and at final follow-up (mean follow-up, 32 months). Results: Patients in both groups A and B reported improved VAS and functional scores at the final follow-up. In group A, preoperative VAS scores were higher and functional scores were poorer than in group B. Subacromial effusions with tendon swelling on preoperative MRI were more common in group A. During follow-up ultrasonography, group A patients exhibited persistent subacromial effusion. However, VAS scores at final follow-up were significantly better in group A (0.4 ± 0.7) than in group B (1.6 ± 1.4) ( P < .001), and ASES scores at final follow-up were better in group A (84.3 ± 4.3) than in group B (77.0 ± 10.2) ( P = .005). Conclusion: Everted bursal flap delaminated tears were associated with higher VAS scores and poorer functional scores preoperatively. Although subacromial effusions were experienced by group A during the early postoperative period, clinical outcomes at final follow-up were significantly better for everted delaminated tears compared with classic delaminated tears.

scholarly journals A modification of the Ponseti method for clubfoot management: a prospective comparative study

2021 ◽  
pp. 1-10
Author(s):  
Reda Ali Sheta ◽  
Mohamed El-Sayed ◽  
Hisham Abdel-Ghani ◽  
Sameh Saber ◽  
Amani Salah Eldin Mohammed ◽  
...  
Keyword(s):  
Treatment Method ◽  
Ponseti Method ◽  
Level Of Evidence ◽  
Home Based ◽  
Multicentre Cohort Study ◽  
Group A ◽  
Prospective Comparative Study ◽  
Group B ◽  
Multicentre Cohort

Purpose We aimed to compare our parent-based exercise programem’s efficacy with the foot abduction brace (FAB) Ponseti manipulation as a retention programme. Methods We conducted this prospective multicentre cohort study between August 2009 and November 2019. The included children were allocated into one of two groups according to the retention protocol. The Pirani and Laaveg-Ponseti scores were used to assess the feet clinically and functionally. Radiological assessment was performed using standing anteroposterior and lateral radiographs of the feet. We assessed the parents’ satisfaction and adherence to the retention method. SPSS version 25 was used for the statistical analysis. Results A total of 1265 feet in 973 children were included. Group A included 637 feet managed with FAB, while group B included 628 feet managed with our retention programme. All patients were followed up to the age of four years. At the final follow-up, Pirani scores in group A participants were excellent, good and poor in 515, 90, and 32 feet, respectivel, while in group B the scores were excellent, good and poor in 471, 110 and 44 feet, respectively. The mean total score of Laaveg-Ponseti was 87.81 (sd 19.82) in group A and 90.55 (sd 20.71) in group B (p = 0.02). Group B participants showed higher satisfaction with the treatment method (p = 0.011) and more adherence to the treatment (p = 0.013). Conclusion The deformity’s recurrence related to the brace’s non-compliance in the Ponseti method might be reduced by substituting the brace with our home-based daily stretching exercises. Level of Evidence II

scholarly journals Prospective evaluation of parental anxiety related to newborn foot disorder

2019 ◽  
Vol 13 (5) ◽  
pp. 500-507
Author(s):  
S. T. Mahan ◽  
P. E. Miller ◽  
C. J. May ◽  
J. R. Kasser
Keyword(s):  
Orthopaedic Surgeon ◽  
Parental Anxiety ◽  
Level Of Evidence ◽  
Prenatal Counselling ◽  
Level Ii ◽  
Group A ◽  
Anxiety Levels ◽  
Paediatric Orthopaedic ◽  
Group B ◽  
Foot Disorder

Purpose The presence of a clubfoot is often found prenatally and some families seek counselling with a specialist. The purpose of this study was to compare the parental anxiety levels in families that: a) knew prenatally and had prenatal counselling; b) knew prenatally but did not seek prenatal counselling; and c) did not know until after delivery. Methods This prospective cohort study evaluated the anxiety of parents as they presented to the paediatric orthopaedic clinic with their newborn with a foot disorder (prior to the diagnostic confirmation of clubfoot). Each family filled out the ‘Pre-visit orthopaedic surgeon questionnaire’ and then after the initial visit with the orthopaedic surgeon (confirming the clubfoot diagnosis) the family filled out the ‘Immediately post-visit orthopaedic surgeon questionnaire’. Through these questionnaires, anxiety level was assessed prior to meeting postnatally with the paediatric orthopaedic specialist, as well as after the meeting and compared across groups. Results A total of 121 parents completed questionnaires: 71% (86/121) confirmed clubfoot; 69% of families (59/86) received prenatal counselling (Group A); 16% (14/86) knew prenatally but had no counselling (Group B); and 15% (13/86) found out at birth (Group C). There was no difference in anxiety levels across groups before (p = 0.78) or after (p = 0.57) meeting with the paediatric orthopaedic surgeon; however, overall anxiety reduced significantly (p < 0.001). Conclusion We found no difference in the anxiety levels of across the three groups. Prenatal counselling for parents of children with likely clubfoot may not decrease parental anxiety, but nonetheless is very appreciated by the families who receive it. Level of Evidence Prognostic Level II

Sports Hernia in National Hockey League Players

2012 ◽  
Vol 41 (1) ◽  
pp. 107-110 ◽  
Author(s):  
Andre Jakoi ◽  
Craig O’Neill ◽  
Christopher Damsgaard ◽  
Keith Fehring ◽  
James Tom
Keyword(s):  
Statistical Significance ◽  
Return To Play ◽  
National Hockey League ◽  
Control Group ◽  
Sports Hernia ◽  
Level Of Evidence ◽  
Athletic Pubalgia ◽  
Hockey Players ◽  
Group A ◽  
Group B

Background: Athletic pubalgia is a complex injury that results in loss of play in competitive athletes, especially hockey players. The number of reported sports hernias has been increasing, and the importance of their management is vital. There are no studies reporting whether athletes can return to play at preinjury levels. Purpose: The focus of this study was to evaluate the productivity of professional hockey players before an established athletic pubalgia diagnosis contrasted with the productivity after sports hernia repair. Study Design: Cohort study; Level of evidence, 3. Methods: Professional National Hockey League (NHL) players who were reported to have a sports hernia and who underwent surgery from 2001 to 2008 were identified. Statistics were gathered on the players’ previous 2 full seasons and compared with the statistics 2 full seasons after surgery. Data concerning games played, goals, average time on ice, time of productivity, and assists were gathered. Players were divided into 3 groups: group A incorporated all players, group B were players with 6 or fewer seasons of play, and group C consisted of players with 7 or more seasons of play. A control group was chosen to compare player deterioration or improvement over a career; each player selected for the study had a corresponding control player with the same tenure in his career and position during the same years. Results: Forty-three hockey players were identified to have had sports hernia repairs from 2001 to 2008; ultimately, 80% would return to play 2 or more full seasons. Group A had statistically significant decreases in games played, goals scored, and assists. Versus the control group, the decreases in games played and assists were supported. Statistical analysis showed significant decreases in games played, goals scored, assists, and average time on ice the following 2 seasons in group C, which was also seen in comparison with the control group. Group B (16 players) showed only statistical significance in games played versus the control group. Conclusion: Players who undergo sports hernia surgeries return to play and often perform similar to their presurgery level. Players with over 7 full seasons return but with significant decreases in their overall performance levels. Less veteran players were able to return to play without any statistical decrease in performance and are likely the best candidates for repair once incurring injury.

scholarly journals Use of an Elastomeric Knee Brace in Patellofemoral Pain Syndrome: Short-Term Results

Joints ◽  
2018 ◽  
Vol 06 (02) ◽  
pp. 085-089 ◽  
Author(s):  
Francesco Uboldi ◽  
Paolo Ferrua ◽  
Daniele Tradati ◽  
Pietro Zedde ◽  
Jim Richards ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Return To Sport ◽  
Pain Syndrome ◽  
Patellofemoral Pain Syndrome ◽  
Patellofemoral Pain ◽  
Rehabilitation Program ◽  
Return To Sports ◽  
Level Of Evidence ◽  
Group A ◽  
Group B

Purpose This article verifies the effectiveness of a new brace on patellofemoral pain syndrome (PFPS) in adjunct to a specifically developed rehabilitation program. Methods Two groups of 30 patients with PFPS were prospectively and randomly allocated to a rehabilitation protocol, with (group A) or without (group B) the use of a specific brace. All the patients were assessed at 3, 6, and 12 months using the disease-specific Kujala scale and a visual analog scale (VAS) for pain; time to return to sport and patient satisfaction with the brace were also recorded. Results Kujala scale's values showed constant and progressive improvement. The mean score at 6 months was 79.8 ± 6.8 points in group A and 76.8 ± 8.6 in group B, rising at 12 months to 80.9 ± 7.5 in group A and 78.4 ± 8.3 in group B. VAS scores significantly differed (p < 0.05) between the two groups at both 6 and 12 months; the score recorded at 12 months was 0.9 ± 1.3 in the brace-treated group and 1.8 ± 1.6 in the controls. The patients who used a brace showed a quicker return to sports and 75% of the patients in this group were satisfied. Conclusion All the scores improved progressively in both groups. The most significant improvement concerned pain, showing that the brace used in this study may allow a better subjective outcome and a quicker return to sport. Level of Evidence Level II, prospective randomized controlled trial.

Maintaining Effective Microsurgery Training with Reduced Utilisation of Live Rats

2020 ◽  
Vol 25 (02) ◽  
pp. 206-213 ◽  
Author(s):  
Amitabha Lahiri ◽  
Sandeep Sebastin Muttath ◽  
Siti Khadijah Yusoff ◽  
Alphonsus KS. Chong
Keyword(s):  
Skill Acquisition ◽  
Ex Vivo ◽  
High Fidelity ◽  
Training Time ◽  
Training Models ◽  
Ethical Concerns ◽  
Utilisation Rate ◽  
Group A ◽  
Group B

Background: Microvascular surgery is now an integral part of many surgical disciplines, and the success of these procedures relies on the technical skills of the surgeon. Although numerous training models and simulations have been developed, the living rat model is favoured for its high fidelity to clinical microsurgery. However, there are serious ethical concerns over the use of live models for training. The aim of this study was to demonstrate if effective skill acquisition was possible with a reduction in the number of live rats. Methods: Two course structures were designed, that were implemented. Total training hours remained the same in both the courses, but the number of rats used was reduced from conventional five rats per participant to four in group A and to three in group B while increasing the training time spent on synthetic and ex-vivo models. We assessed the effectiveness of the courses by comparing the patency rates, the time taken per anastomosis and efficiency of the utilisation rate of rats. Results: There were 30 participants in Group A and 28 participants in group B. We observed that group B was able to perform anastomosis in a significantly shorter time and with patency rates similar to group A in spite of a lesser number of rats used in the training. Conclusions: we were able to conclusively demonstrate that it was possible to reduce live rat usage in microsurgical training without compromising on the quality of training.

scholarly journals CARDIOVASCULAR RESPONSE OF ATHLETES UNDER DIFFERENT TRAINING CONDITIONS

2022 ◽  
Vol 28 (1) ◽  
pp. 34-36
Author(s):  
Jiyan Chen
Keyword(s):  
Cardiovascular Response ◽  
State Level ◽  
Fatigue Tests ◽  
Level Of Evidence ◽  
Exercise Load ◽  
Training Conditions ◽  
High Fatigue ◽  
Group A ◽  
Group B ◽  
Exercise Fatigue

ABSTRACT Introduction: Improving cardiovascular function is one of the main training goals of many sports. Objective: To understand the characteristics of the cardiovascular response of athletes under different training conditions. Methods: Thirty male basketball students were enrolled. The subjects were divided into A and B groups according to their years of training, with 15 students in each group. Exercise fatigue tests were performed, starting at a low intensity and gradually increasing the load to a relatively high degree of fatigue. Results: The RMSSD value was 42.82±31.41ms in group A and 46.48±35.26ms in group B undera low fatigue state. The LF/HF value of the athletes in group A was 2.86±1.47 and the LF/HF value of the athletes in group B was 2.94±1.68. The RMSSD value was 40.78±31.17ms and 32.37±36.42ms for groups A and B, respectively, undera high fatigue state. Conclusions: Athletes with more years of training can mobilize more cardiac reserves to meet the increase in exercise load in a fatigue state and have better autonomic nervous regulation in the process of reaching a higher degree of fatigue state. Level of evidence II; Therapeutic studies - investigation of treatment results.

scholarly journals The treatment of chondral lesions of the knee with the microfracture technique and platelet-rich plasma

Joints ◽  
2013 ◽  
Vol 01 (04) ◽  
pp. 167-170 ◽  
Author(s):  
Andrea Manunta ◽  
Anna Manconi
Keyword(s):  
Platelet Rich Plasma ◽  
Femoral Condyle ◽  
Healing Process ◽  
International Knee Documentation Committee ◽  
Level Of Evidence ◽  
Chondral Lesions ◽  
Randomized Clinical Study ◽  
Group A ◽  
Ikdc Score ◽  
Group B

Purpose: to assess the efficacy of associating the microfracture technique with platelet-rich plasma (PRP) injections in the treatment of chondral lesions to promote acceleration and optimization of the healing process compared with the traditional microfracture approach. Methods: from September 2011 to August 2012, 20 patients (9 males and 11 females, aged 30-55 years) were treated. All presented with chondral lesions of the medial femoral condyle of the knee and a pain duration ranging from 8 to 12 months.The patients were randomized into two groups (A and B). Group A was treated with the microfracture technique and a total of three intra-articular injections of PRP. Group B was treated with microfractures alone. Clinical follow-up was performed at 3, 6 and 12 months after treatment. Clinical function was assessed on the basis of the International Knee Documentation Committee (IKDC) score. Pain was evaluated using a visual analogue scale (VAS) Results: the patients in group A had a mean baseline IKDC score of 31.2, which rose to 84.2 at 12 months. The IKDC scores in group B were at 30.1 at baseline and 81 at 12 months. Conclusions: the results of our study suggest that functional recovery and resolution of pain are obtained more quickly in PRP-treated patients. We also observed a better functional outcome in the patients treated with the combination of PRP and microfractures, even at 12 months, although the difference was not statistically significant. Level of evidence: level II, randomized clinical study.

scholarly journals The Effect of the Number of Carries on Injury Risk and Subsequent Season’s Performance Among Running Backs in the National Football League

2017 ◽  
Vol 5 (2) ◽  
pp. 232596711769194 ◽  
Author(s):  
Matthew J. Kraeutler ◽  
John W. Belk ◽  
Eric C. McCarty
Keyword(s):  
Injury Risk ◽  
National Football League ◽  
Matched Pair ◽  
Level Of Evidence ◽  
Risk Of Injury ◽  
Increased Risk ◽  
Group A ◽  
Preceding Season ◽  
Playing Time ◽  
Group B

Background: In recent years, several studies have correlated pitch count with an increased risk for injury among baseball pitchers. However, no studies have attempted to draw a similar conclusion based on number of carries by running backs (RBs) in football. Purpose: To determine whether there is a correlation between number of carries by RBs in the National Football League (NFL) and risk of injury or worsened performance in the subsequent season. Study Design: Cohort study; Level of evidence, 3. Methods: The ESPN NFL statistics archives were searched from the 2004 through 2014 regular seasons. During each season, data were collected on RBs with 150 to 250 carries (group A) and 300+ carries (group B). The following data were collected for each player and compared between groups: number of carries and mean yards per carry during the regular season of interest and the subsequent season, number of games missed due to injury during the season of interest and the subsequent season, and the specific injuries resulting in missed playing time during the subsequent season. Matched-pair t tests were used to compare changes within each group from one season to the next in terms of number of carries, mean yards per carry, and games missed due to injury. Results: During the seasons studied, a total of 275 RBs were included (group A, 212; group B, 63). In group A, 140 RBs (66%) missed at least 1 game the subsequent season due to injury, compared with 31 RBs (49%) in group B ( P = .016). In fact, players in group B missed significantly fewer games due to injury during the season of interest ( P < .0001) as well as the subsequent season ( P < .01). Mean yards per carry was not significantly different between groups in the preceding season ( P = .073) or the subsequent season ( P = .24). Conclusion: NFL RBs with a high number of carries are not placed at greater risk of injury or worsened performance during the subsequent season. These RBs may be generally less injury prone compared with other NFL RBs.

Sign in / Sign up

Export Citation Format

Share Document