scholarly journals Lower Limb Dominance, Morphology, and Sonographic Abnormalities of the Patellar Tendon in Elite Basketball Players: A Cross-Sectional Study

2019 ◽  
Vol 54 (12) ◽  
pp. 1280-1286 ◽  
Author(s):  
Josep C. Benítez-Martínez ◽  
Fermín Valera-Garrido ◽  
Pablo Martínez-Ramírez ◽  
José Ríos-Díaz ◽  
María Elena del Baño-Aledo ◽  
...  
Keyword(s):  
Adult Male ◽  
Lower Limb ◽  
Cross Sectional Study ◽  
Cross Sectional Area ◽  
Group Differences ◽  
Sectional Area ◽  
Basketball Players ◽  
Cross Sectional ◽  
Vascular Abnormalities ◽  
Limb Dominance

Context Patellar tendinopathy is common in basketball players, and structural ultrasound abnormalities can be found in symptomatic and asymptomatic tendons. Lower limb dominance may also be a critical load factor, potentially leading to overloading of the patellar tendon. Objective To describe and compare the prevalence by lower limb dominance of patellar tendons with structural and vascular abnormalities and to describe the morphologic measures of tendons without abnormalities among adult male elite basketball players. Design Cross-sectional study. Setting Medical center of a professional basketball team in the Spanish league. Patients or Other Participants A total of 73 adult male elite basketball players (146 patellar tendons; age = 26.8 ± 4.9 years, height = 198.0 ± 0.1 cm, mass = 95.4 ± 11.4 kg). Main Outcome Measure(s) We used ultrasound to screen the patellar tendons for the presence of structural and vascular abnormalities. Tendons were categorized as abnormal if they demonstrated a focal area of hypoechogenicity, thickening, or neovascularization. We also examined the cross-sectional area and thickness of tendons without abnormalities. Prevalence and morphologic measures were compared by limb dominance. Results A total of 35 players (48%) had bilateral abnormalities, whereas 21 (28.7%) had unilateral abnormalities. Among the 91 abnormal tendons, 90 (61.6% of 146 tendons) exhibited a focal area of hypoechogenicity, 59 (40.4% of 146 tendons) exhibited thickening, and 14 (9.6% of 146 tendons) exhibited neovascularization. No group differences were detected between the dominant and nondominant limbs. Among the 55 normal patellar tendons, 34 were bilateral (from 17 players) and 21 were unilateral. Approximately 25% (n = 14) of all 55 normal tendons had a cross-sectional area that was greater than 182.8 mm2 and a thickness greater than 7.2 mm. Among the 34 bilateral normal tendons, no group differences were observed between the dominant and nondominant limbs for either cross-sectional area or thickness. Conclusions The prevalence of abnormal tendons was high among adult male elite basketball players, and bilateral presentations were more frequent. Structural abnormalities were most common.

scholarly journals The influence of lower-limb dominance on postural balance

2011 ◽  
Vol 129 (6) ◽  
pp. 410-413 ◽  
Author(s):  
Angélica Castilho Alonso ◽  
Guilherme Carlos Brech ◽  
Andréia Moraes Bourquin ◽  
Julia Maria D'Andréa Greve
Keyword(s):  
Lower Limb ◽  
Postural Balance ◽  
Sensory Information ◽  
Cross Sectional Study ◽  
Balance Test ◽  
Cross Sectional ◽  
Balance System ◽  
Leg Dominance ◽  
Limb Dominance ◽  
Instability Indices

CONTEXT AND OBJECTIVE: Maintainance of postural balance requires detection of body movements, integration of sensory information in the central nervous system and an appropriate motor response. The purpose of this study was to evaluate whether lower-limb dominance has an influence on postural balance. DESIGN AND SETTING: This was a cross-sectional study conducted at Faculdade de Medicina da Universidade de São Paulo (FMUSP) and at Hospital do Coração (HCor). METHODS: Forty healthy sedentary males aged 20 to 40 years, without any injuries, were evaluated. A single-foot balance test was carried out using the Biodex Balance System equipment, comparing the dominant leg with the nondominant leg of the same individual. The instability protocols used were level 8 (more stable) and level 2 (less stable), and three instability indices were calculated: anteroposterior, mediolateral and general. RESULTS: The volunteers' mean age was 26 ± 5 years (range: 20-38), mean weight 72.3 ± 11 kg (range: 46-107) and mean height 176 ± 6 cm (range: 169-186). Thirty-four of them (85%) presented right-leg dominance (defined according to which leg they used for kicking) and six (15%) had left-leg dominance. There were no significant differences between the dominant and nondominant legs at the two levels of stability (eight and two), for any of the instability indices (general, anteroposterior and mediolateral). CONCLUSION: The lower-limb dominance did not influence single-foot balance among sedentary males.

scholarly journals Bilateral Differences in Muscle Architecture and Increased Rate of Injury in National Basketball Association Players

2014 ◽  
Vol 49 (6) ◽  
pp. 794-799 ◽  
Author(s):  
Gerald T. Mangine ◽  
Jay R. Hoffman ◽  
Adam M. Gonzalez ◽  
Adam R. Jajtner ◽  
Tyler Scanlon ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Vastus Lateralis ◽  
Muscle Thickness ◽  
Cross Sectional Area ◽  
Lower Extremity Injury ◽  
Sectional Area ◽  
Basketball Players ◽  
Cross Sectional ◽  
Professional Basketball ◽  
Bilateral Differences

Context Professional basketball players have demanding schedules that, in combination with certain underlying physical characteristics and side-to-side strength and power imbalances, may make them vulnerable to lower extremity injuries. Objective To examine the relationship among skeletal muscle architecture, lower body power, and games missed because of lower extremity injury (%MISS) in professional basketball players. Design Cross-sectional study. Setting Human Performance Laboratory. Patients or Other Participants Nine players under contract for Orlando Magic were assessed. We compared athletes who were injured (n = 4, height = 203.2 ± 5.5 cm, mass = 105 ± 7.5 kg, age = 25.0 ± 2.8 years) and those who remained healthy (n = 5, height = 200.2 ± 12.2 cm, mass = 100.1 ± 16.6 kg, age = 22.4 ± 1.9 years) during the season. Main Outcome Measure(s) Bilateral ultrasonographic measurements of muscle thickness, pennation angle, echo intensity, and cross-sectional area of the rectus femoris and vastus lateralis were collected before regular-season play. Subsequently, muscle thickness and pennation angle were used to compute fascicle length. Along with unilateral jumping power, inferences were made upon the magnitude of the relationship between the percentage bilateral difference in these measures and %MISS, as well as between injured and healthy athletes. Results The data indicated likely relationships between %MISS and age (r = 0.772), and between %MISS and bilateral differences in rectus femoris cross-sectional area (7.8% ± 6.4%; r = 0.657) and vastus lateralis cross-sectional area (6.2% ± 4.8%; r = 0.521), as well as a possible relationship with vastus lateralis muscle thickness (7.9% ± 8.9%; r = 0.444). Echo-intensity differences in the vastus lateralis were greater in injured (8.0% ± 2.4%) versus healthy athletes (3.2% ± 2.0%). Although a 2-fold difference in mean jumping power was observed between injured (26.3 ± 14.9 W) and healthy athletes (13.6 ± 8.7 W), these differences were not statistically significant (P = .20). Conclusions In the present sample, lower extremity side-to-side differences may be related to an increased risk for lower extremity injury. Future researchers using larger sample sizes need to identify normal versus at-risk ranges for bilateral differences in muscle structure and power of the lower extremities of professional basketball players and athletes in other sports.

scholarly journals DeepACSA: Automatic segmentation of anatomical cross-sectional area in ultrasound images of human lower limb muscles using deep learning

2021 ◽  
Author(s):  
Paul Ritsche ◽  
Philipp Wirth ◽  
Neil Cronin ◽  
Fabio Sarto ◽  
Marco Narici ◽  
...  
Keyword(s):  
Deep Learning ◽  
Lower Limb ◽  
Vastus Lateralis ◽  
Rectus Femoris ◽  
Cross Sectional Area ◽  
Mean Difference ◽  
Ultrasound Images ◽  
Sectional Area ◽  
Cross Sectional ◽  
Manual Analysis

Background: Muscle anatomical cross-sectional area (ACSA) is an important parameter that characterizes muscle function and helps to classify the severity of several muscular disorders. Ultrasound is a patient friendly, fast and cheap method of assessing muscle ACSA, but manual analysis of the images is laborious, subjective and requires thorough experience. To date, no open access and fully automated program to segment ACSA in ultrasound images is available. On this basis, we present DeepACSA, a deep learning approach to automatically segment ACSA in panoramic ultrasound images of the human rectus femoris (RF), vastus lateralis (VL), gastrocnemius medialis (GM) and lateralis (GL) muscles. Methods: We trained convolutional neural networks using 1772 ultrasound images from 153 participants (25 females, 128 males; mean age = 38.2 years, range: 13-78) captured by three experienced operators using three distinct devices. We trained three muscle-specific models to detect ACSA. Findings: Comparing DeepACSA analysis of the RF to manual analysis resulted in intra-class correlation (ICC) of 0.96 (95% CI 0.94,0.97), mean difference of 0.31 cm2 (0.04,0.58) and standard error of the differences (SEM) of 0.91 cm2 (0.47,1.36). For the VL, ICC was 0.94 (0.91,0.96), mean difference was 0.25 cm2 (-0.21,0.7) and SEM was 1.55 cm2 (1.13,1.96). The GM/GL muscles demonstrated an ICC of 0.97 (0.95,0.98), a mean difference of 0.01 cm2 (-0.25, 0.24) and a SEM of 0.69 cm2 (0.52,0.83). Interpretation: DeepACSA provides fast and objective segmentation of lower limb panoramic ultrasound images comparable to manual segmentation and is easy to implement both in research and clinical settings. Inaccurate model predictions occurred predominantly on low-quality images, highlighting the importance of high image quality for accurate prediction.

Mid-thigh cross-sectional area and lower limb muscle function in patients with lung cancer

2015 ◽  
Author(s):  
Valerie Coats ◽  
Fernanda Ribeiro ◽  
Lise Tremblay ◽  
Brigitte Fortin ◽  
François Maltais ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Lower Limb ◽  
Muscle Function ◽  
Cross Sectional Area ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Sectional Area ◽  
Cross Sectional

Cross Sectional Area of the Supraspinatus Muscle and Acromio-humeral Distance in Overhead Athletes With and Without Shoulder Pain: A Cross-sectional Study

2017 ◽  
Vol 26 (6) ◽  
pp. 524-529 ◽  
Author(s):  
Josep C. Benitez-Martinez ◽  
Jose Casaña-Granell ◽  
Yasmin Ezzatvar de Llago ◽  
Carlos Villaron-Casales ◽  
Gemma V. Espi-Lopez ◽  
...  
Keyword(s):  
Shoulder Pain ◽  
Outcome Measures ◽  
Cross Sectional Study ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Sectional Study ◽  
Pain Group ◽  
Cross Sectional ◽  
Overhead Athletes ◽  
Supraspinatus Muscle

Context:The supraspinatus muscle has an important role in the stabilization of the glenohumeral joint. Identifying abnormalities concerning its size and the subacromial space in the presence of pain may be relevant to provide more specific treatments focused on the etiology of pain.Objective:To determinate whether painful shoulder causes changes in the supraspinatus cross-sectional area (CSA) and the acromio-humeral distance (AHD) between overhead athletes.Design:Cross-sectional study.Setting:University campus and local sports clubs’ Physical Therapist room.Participants:81 male overhead athletes were divided into 2 groups according to the presence of shoulder pain and clinical symptoms.Main Outcome Measures:Ultrasonography measurements of the supraspinatus CSA and the AHD in 2 groups of overhead athletes with and without pain.Results:In the pain group, the CSA was significantly smaller compared with the no pain group. No differences between groups were found in the AHD measurement.Conclusions:Shoulder pain in overhead athletes was associated with a reduction in their supraspinatus muscle CSA, but not in the AHD. These findings suggest that muscle atrophy exists in the presence of pain. However, in active overhead athletes, the AHD is not clearly reduced in overhead athletes with shoulder pain. Further studies are needed to understand this condition.

Is There Any Association Between Foot Posture and Lower Limb–Related Injuries in Professional Male Basketball Players? A Cross-Sectional Study

2017 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Eva Lopezosa-Reca ◽  
Gabriel Gijon-Nogueron ◽  
Jose Miguel Morales-Asencio ◽  
Jose Antonio Cervera-Marin ◽  
Alejandro Luque-Suarez
Keyword(s):  
Lower Limb ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Basketball Players ◽  
Cross Sectional ◽  
Foot Posture

scholarly journals High validity of measuring the width and volume of medial meniscal extrusion three-dimensionally using an MRI-derived tibial model

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Goro Watanabe ◽  
Kenji Hoshi ◽  
Yasuo Kurose ◽  
Kazuyoshi Gamada
Keyword(s):  
Tibial Plateau ◽  
Cross Sectional Study ◽  
Cross Sectional Area ◽  
Maximal Surface ◽  
Sectional Area ◽  
Medial Tibial Plateau ◽  
Meniscal Extrusion ◽  
Cross Sectional ◽  
Morphological Differences ◽  
Ct And Mri

Abstract Background Medial meniscal extrusion (MME) is an important marker of knee osteoarthritis (KOA) progression. The purposes of this study were: 1) to determine whether there are morphological differences between CT- and MRI-derived tibial plateau models; and 2) to determine whether measurement of MME volume and width using an MRI-derived tibial model is as accurate as measurements on a CT-derived tibial model. Methods This was a cross-sectional study that enrolled ten participants with medial KOA (Kellgren-Lawrence grade 1 to 3). Primary outcome was surface difference of the medial tibial plateau between CT- and MRI-derived models. Furthermore, volume and cross-sectional area of the medial tibial plateau were compared between CT- and MRI-derived models. Measurements of MME volume and width were compared between CT- and MRI-derived tibial models. Results Minimal and maximal surface differences of the medial tibial plateau between the CT- and MRI-derived models were − 0.15 [− 0.44, 0.14] mm (mean [95% confidence interval]) and 0.24 [− 0.09, 0.57] mm, respectively. There were no significant differences in volume and cross-sectional area of the medial tibial plateau between CT- and MRI-derived tibial models. The MME volumes measured on CT- and MRI-derived models were 942.6 [597.7, 1287.6] mm3 and 916.2 [557.9, 1274.6] mm3, respectively (p = 0.938). The MME widths measured on CT- and MRI-derived models were 4.2 [1.9, 6.5] mm and 4.5 [2.2, 6.9] mm, respectively (p = 0.967). Conclusions CT- and MRI-derived models of the medial tibial plateau did not show significant morphological differences. Both CT- and MRI-derived tibia can be used as a reference to measure MME in early-to-moderate medial KOA.

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