906 results match your criteria left quadriceps


Reliability and validity of a standardised ultrasound examination protocol to quantify vastus lateralis muscle.

J Rehabil Med 2021 Jun 14. Epub 2021 Jun 14.

Cardiology, Angiology, Pneumonology, Medical Clinic, University Hospital of Heidelberg, Heidelberg, Germany. E-mail:

Objective: To evaluate the reliability and validity of a standardized ultrasound examination protocol for measuring vastus lateralis muscle size.

Design: Prospective cohort study.

Subjects: Sixteen staff members of the university hospital of Heidelberg. Read More

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Peripheral muscular ultrasound as outcome assessment tool in critically ill patients on mechanical ventilation: An observational cohort study.

Clin Nutr ESPEN 2021 Jun 6;43:408-414. Epub 2021 Apr 6.

Disciplina de Anestesiologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil; Hospital Israelita Alberta Einstein, São Paulo, SP, Brazil. Electronic address:

Background & Aims: Survivors of critical illness experience significant skeletal muscle wasting that may predict clinical outcome. Ultrasound (US) is a noninvasive method that can measure muscle quadriceps muscle layer thickness (QMLT) at the bedside. The aim of this study was to determine the muscle loss assessed by ultrasonography (US) of the quadriceps femoris muscle in critically ill patients on mechanical ventilation and its relationship with hospital outcomes. Read More

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Greater Quadriceps Muscle Mass at Post-Acute Care Admission is Associated with Better Swallowing Ability at Discharge among Adults with Stroke.

J Am Med Dir Assoc 2021 May 21. Epub 2021 May 21.

Life and Medical Sciences Area, Health Sciences Discipline, Kobe University, Kobe, Hyogo, Japan.

Objectives: This study aimed to examine the relationship between muscle mass and intramuscular adipose tissue of the quadriceps at post-acute care admission and recovery of swallowing ability in patients with stroke.

Design: Prospective study.

Setting And Participants: This study was hospital-based and included 62 inpatients with stroke. Read More

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Platelet-Rich Plasma Injection for Quadriceps Tendinopathy: A Case Report.

WMJ 2021 Apr;120(1):78-81

Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin.

Introduction: Platelet-rich plasma (PRP) is a promising treatment for persistent symptoms caused by various musculoskeletal injuries, including tendinopathies.

Case Presentation: A 47-year-old woman presented with chronic left knee pain following a motor vehicle accident. Magnetic resonance imaging (MRI) revealed distal quadriceps tendinosis and a partial tear of the vastus intermedius tendon. Read More

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Handgrip Strength as a Reflection of General Muscle Strength in Chronic Obstructive Pulmonary Disease.

COPD 2021 May 7:1-12. Epub 2021 May 7.

Laboratory of Research in Respiratory Physiotherapy (LFIP), Department of Physiotherapy, State University of Londrina (UEL), Londrina, Brazil.

Muscle dysfunction is one of the main features in individuals with chronic obstructive pulmonary disease (COPD). Handgrip strength (HS) has been used as a representation of general muscle strength in various populations, and a few studies found correlation between HS and other measures of upper and lower limbs' muscle strength in the general population, although this was not yet studied in depth in COPD. The aims of this study were to verify if HS is cross-sectionally well correlated with upper and lower limbs' muscle strength in individuals with COPD, and to identify a new cutoff for handgrip weakness in this population. Read More

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An Autopsy Case of Antibody-negative Immune-mediated Necrotizing Myopathy with Severe Cardiac Involvement.

Intern Med 2021 Apr 12. Epub 2021 Apr 12.

Division of Cardiology, Internal Medicine III, Hamamatsu University School of Medicine, Japan.

A 41-year-old man was admitted with a chief complaint of dyspnea. Echocardiography showed diffuse severe hypokinesis in the left ventricle. Although his heart failure improved, high creatine kinase levels persisted. Read More

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[Effects of "knot-loosing" of acupotomy on motor function and morphological changes of knee joint in knee osteoarthritis rabbits].

Zhen Ci Yan Jiu 2021 Feb;46(2):129-35

Secondary Department of Orthopedics-traumatology, People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou 350004, China; Key Laboratory of Orthopedics-traumatology and Rehabilitation of Traditional Chinese Medicine, Ministry of Education, Fuzhou 350122; Fujian Institute of Orthopedics-traumatology, Fuzhou 350004.

Objective: To observe the effect of "knot-loosing method" of acupotomy on morphological changes in knee osteoarthritis (KOA) rabbits, so as to provide experimental basis for clinical acupotomy treatment of KOA.

Methods: Male New Zealand rabbits were randomly divided into blank control, model and acupotomy groups, with 8 rabbits in each group. By using the modified Videman method, the left hindlimb was immobilized for 6 weeks with a plaster cast to replicate the KOA model. Read More

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February 2021

Use of postoperative neurophysiological testing to help guide management in a case of delayed neurological injury.

Childs Nerv Syst 2021 Mar 29. Epub 2021 Mar 29.

Shriners Hospitals for Children-Philadelphia, 3551 N Broad St, Philadelphia, PA, 19140, USA.

Bimodal intraoperative neuromonitoring (IONM), combining transcranial motor-evoked potentials (tcMEP) and somatosensory-evoked potentials (SSEP), enables real-time detection and prevention of spinal cord injury during pediatric spinal deformity correction. Although rare, false-positive and false-negative signal alerts have been reported. However, no previously published accounts have described the use of postoperative neurophysiological testing to both identify new-onset neurological injury and guide reintervention. Read More

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Microfracture Technique for Chronic Unstable Osteochondral Defect of Knee: Case Report.

Cureus 2021 Feb 6;13(2):e13180. Epub 2021 Feb 6.

Orthopaedics, University Hospitals of Derby and Burton, Burton, GBR.

Osteochondral fractures of the medial femoral condyle of the knee can be diagnostically and therapeutically challenging. Various techniques of osteochondral defect treatment include fixation, abrasion chondroplasty, drilling, microfracture, autografts, allografts and chondrocyte transplantation A 37-year-old man presented with persistent left knee pain of about six months duration. Concomitant symptoms included swelling, several episodes of locking and clicking, and a sense of instability especially in walking downstairs. Read More

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February 2021

Management of chronic quadriceps rupture with novel "chariot suture technique": A case report and review.

J Clin Orthop Trauma 2021 Mar 26;14:142-144. Epub 2020 Jun 26.

Department of Orthopaedics, Pt.B.D.S. PGIMS, Rohtak, Haryana, India.

Quadriceps tendon is one of the important segment of knee extensor mechanism. Acute ruptures are more common than chronic ruptures and have better outcomes. Chronic ruptures are rare with lot of surgical challenges including tendon retraction, fibrosis, degenerative calcification. Read More

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Contrast-Enhanced Ultrasound of Muscle Perfusion May Indicate Patient Response to Left Ventricular Assist Device Therapy.

J Ultrasound Med 2021 Mar 5. Epub 2021 Mar 5.

Department of Radiology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.

Purpose: Left ventricular assist device (LVAD) support is associated with peripheral vascular abnormalities beyond those associated with heart failure (HF). These abnormalities are associated with persistent functional impairments that adversely impact quality of life (QoL). Methods for measuring peripheral vascular function in this population are needed. Read More

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Treatment of neglected quadriceps tendon ruptures using LARS™ ligament augmentation: A case series.

Trauma Case Rep 2021 Apr 18;32:100437. Epub 2021 Feb 18.

Morriston Hospital, Swansea SA6 6NL, United Kingdom of Great Britain and Northern Ireland.

Background: Late presentation of Quadriceps tendon rupture (QTR) is rare. Treatment of neglected QTR's can be challenging due to scar tissue and muscle wasting and may require augmentation. Delayed tendon repairs tend to have less favourable outcome compared to acute repairs. Read More

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Sarcomere length of the vastus intermedius with the knee joint angle change.

Physiol Rep 2021 Mar;9(5):e14771

Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan.

The force-length relation of the skeletal muscles is an important factor influencing the joint torque at a given joint angle. We aimed to clarify the relationship between the resting sarcomere length and knee joint angle in the vastus intermedius (VI) and to compare it with that of the vastus lateralis (VL). The left and right legs were fixed at knee joint angles of 0° and 90°, respectively, in seven cadavers (age at the time of death: 70-91 years). Read More

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Impact of isometric and concentric resistance exercise on pain and fatigue in fibromyalgia.

Eur J Appl Physiol 2021 May 22;121(5):1389-1404. Epub 2021 Feb 22.

Department of Physical Therapy, Marquette University, 561 N 15 St, Milwaukee, WI, 53233, USA.

Purpose: The aim of this study was to determine the local and systemic effects of isometric and concentric muscle contractions on experimental pain and performance fatigability in people with and without fibromyalgia.

Methods: Forty-seven fibromyalgia (FM: 51.3 ± 12. Read More

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Neural Correlates of Knee Extension and Flexion Force Control: A Kinetically-Instrumented Neuroimaging Study.

Front Hum Neurosci 2020 4;14:622637. Epub 2021 Feb 4.

Honors Tutorial College, Ohio University, Athens, OH, United States.

: The regulation of muscle force is a vital aspect of sensorimotor control, requiring intricate neural processes. While neural activity associated with upper extremity force control has been documented, extrapolation to lower extremity force control is limited. Knowledge of how the brain regulates force control for knee extension and flexion may provide insights as to how pathology or intervention impacts central control of movement. Read More

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February 2021

Quadriceps tendon autograft is becoming increasingly popular in revision ACL reconstruction.

Knee Surg Sports Traumatol Arthrosc 2021 Feb 16. Epub 2021 Feb 16.

Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, University of Pittsburgh, 3200 S. Water St., Pittsburgh, PA, 15203, USA.

Purpose: To evaluate trends in revision anterior cruciate ligament reconstruction (ACL-R), with emphasis on intra-articular findings, grafts, and concurrent procedures. It was hypothesized that revision ACL-Rs over time show a trend toward increased complexity with increased use of autografts over allografts.

Methods: This was a two-center retrospective study including patients undergoing revision ACL-R between 2010 and 2020. Read More

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February 2021

Electromechanical delay during functional electrical stimulation induced cycling is a function of lower limb position.

Disabil Rehabil Assist Technol 2021 Feb 2:1-6. Epub 2021 Feb 2.

Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA.

Introduction: Functional electrical stimulation (FES) induced cycling has been shown to be an effective rehabilitation for those with lower limb movement disorders. However, a consequence of FES is an electromechanical delay (EMD) existing between the stimulation input and the onset of muscle force. The objective of this study is to determine if the cycle crank angle has an effect on the EMD. Read More

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February 2021

Reconstruction of Quadriceps Muscle Function Using the Latissimus Dorsi Muscle Transfer in an Elderly Patient: A Case Report.

JBJS Case Connect 2020 12 4;10(4):e20.00255. Epub 2020 Dec 4.

Division of Plastic Surgery, Mayo Clinic, Jacksonville, Florida.

Case: We report a case of a 71-year-old man diagnosed with high-grade undifferentiated pleomorphic sarcoma in the left thigh. He underwent partial resection of the quadriceps and proximal femoral bone, followed by reconstruction with a latissimus dorsi free muscle flap through end-to-end vascular and nerve anastomosis with the femoral vessels and a branch of the femoral nerve, respectively. Recovery of 3/5 knee extension function was achieved 3 months postsurgery without complications. Read More

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December 2020

Medial collateral ligament reconstruction graft isometry is effected by femoral position more than tibial position.

Knee Surg Sports Traumatol Arthrosc 2021 Jan 17. Epub 2021 Jan 17.

OCM Clinic, Munich, Germany.

Purpose: The purpose of this study was to examine the length change patterns of the native medial structures of the knee and determine the effect on graft length change patterns for different tibial and femoral attachment points for previously described medial reconstructions.

Methods: Eight cadaveric knee specimens were prepared by removing the skin and subcutaneous fat. The sartorius fascia was divided to allow clear identification of the medial ligamentous structures. Read More

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January 2021

Extradural arachnoid cyst with bony erosion: a rare case report.

J Spine Surg 2020 Dec;6(4):736-742

The Maryland Spine Center, Baltimore, MD, USA.

The authors present the case of an otherwise healthy 38-year-old female with an atypical extradural arachnoid cyst with multi-level involvement in the lumbar spine leading to left quadriceps weakness and dysesthesia. Upon presentation, a lumbar spine MRI with contrast and plain radiographs revealed extensive L4 bony erosion. An MR angiogram and cervical spine MRI with contrast were then obtained in order to rule out any aortic root or cervical spine pathology. Read More

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December 2020

An Unusual Proximal Tibia Physis Injury in an Adolescent.

Cureus 2020 Dec 13;12(12):e12052. Epub 2020 Dec 13.

Trauma and Orthopaedics, Royal United Hospital, Bath, GBR.

Tibial tuberosity fractures are uncommon but are usually seen in adolescents approaching skeletal maturity. Typically this fracture results from an avulsion of the tibial tuberosity as the powerful quadriceps overcome skeletal strength in passive flexion. We present the case of a 17-year-old female who presented with severe pain in her left knee sustained after stepping off a curb. Read More

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December 2020

[A man with a painful swelling of the thigh].

Ned Tijdschr Geneeskd 2020 11 24;164. Epub 2020 Nov 24.

Sint-Trudo Ziekenhuis, afd. Orthopedie, Sint-Truiden, België.

A 49-year old male patient presented with a painful swelling of the left thigh after a football trauma. An isolated musculotendinous rectus femoris rupture was diagnosed with ultrasound and MRI. 3 months after surgical repair he was fully recovered in function and strength. Read More

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November 2020

Iliopsoas hematoma presenting with sudden knee extensor weakness: A case report.

Medicine (Baltimore) 2020 Dec;99(50):e23497

Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, Republic of Korea.

Rationale: Hematoma of the iliopsoas muscle is a rare condition. Prolonged pressure conditions due to hematoma of the femoral nerve can cause severe pain in the affected groin, hip, and thigh, and quadriceps weakness. We report a rare case of a spontaneous iliopsoas muscle hematoma that caused sudden femoral neuropathy. Read More

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December 2020

Rare case of symptomatic calcific tendinopathy of the origin of rectus femoris tendon.

BMJ Case Rep 2020 Dec 13;13(12). Epub 2020 Dec 13.

Family Medicine, Mayo Clinic Florida, Jacksonville, Florida, USA.

Although calcific tendinopathy of the shoulder is a relatively common clinical diagnosis, calcific tendinopathy of the rectus femoris tendon near its origin at the anterior inferior iliac spine is rare. We present a case of a 53-year-old female avid runner with left hip pain. Clinical evaluation and X-ray imaging led to a diagnosis of calcific tendinopathy of the rectus femoris tendon. Read More

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December 2020

Muscle Activity Asymmetry of The Lower Limbs During Sprinting in Elite Soccer Players.

J Hum Kinet 2020 Oct 31;75:239-245. Epub 2020 Oct 31.

Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland.

The analysis of movement patterns through EMG activity provides the opportunity to identify the muscle groups most involved in a particular exercise, and to determine the scope of inter-limb deficiencies. The aim of the present study was to investigate the effects of a side-to-side muscle activity asymmetry between the left and the right lower limb during sprinting in soccer players. Sixteen professional soccer players took part in the study. Read More

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October 2020

Kinesiophobia in a Patient With Postoperative Midshaft Fracture: A Case Report of Its Impact on Rehabilitation in a 16-Year-Old Girl.

Cureus 2020 Nov 5;12(11):e11333. Epub 2020 Nov 5.

Physiotherapy, Datta Meghe Institute of Medical Sciences, Wardha, IND.

Kinesiophobia is an irrational and debilitating fear of physical movement and activity resulting from a feeling of vulnerability to painful injury or re-injury. According to the concept of avoidance of fear, pain is interpreted as threatening, which can trigger pain-related fears and anxiety leading to avoidance behavior. Avoidance action involves a process/period characterized by a person stepping back from undertaking daily tasks like exercise, socializing, and work, which increases the intensity of the painful experience. Read More

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November 2020

Improvement of Gait after 4 Weeks of Wearable Focal Muscle Vibration Therapy for Individuals with Diabetic Peripheral Neuropathy.

J Clin Med 2020 Nov 22;9(11). Epub 2020 Nov 22.

Department of Rehabilitation Sciences, College of Allied Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.

People with diabetic peripheral neuropathy (DPN) experience lower quality of life caused by associated balance, posture, and gait impairments. While focal muscle vibration (FMV) has been associated with improvements in gait performance in individuals with neurological disorders, little is known about its effectiveness in patients with DPN. The purpose of this study was to investigate the effect of FMV on gait outcomes in patients with DPN. Read More

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November 2020

Predicting pain: differential pain thresholds during self-induced, externally induced, and imagined self-induced pressure pain.

Pain 2021 05;162(5):1539-1544

Departments of Clinical Neuroscience and.

Abstract: During self-induced pain, a copy of the motor information from the body's own movement may help predict the painful sensation and cause downregulation of pain. This phenomenon, called sensory attenuation, enables the distinction between self-produced stimuli vs stimuli produced by others. Sensory attenuation has been shown to occur also during imagined self-produced movements, but this has not been investigated for painful sensations. Read More

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Isolated contracture of the rectus femoris muscle: notification and review of the pathology regarding a case.

Rev Esp Cir Ortop Traumatol (Engl Ed) 2021 Mar-Apr;65(2):158-163. Epub 2020 Nov 14.

Departamento de Ortopedia y Traumatología, Instituto Roosevelt, Bogotá, Colombia.

We described the case of a 12-year-old patient who presented isolated contracture of the left rectus femoris muscle with subsequent traumatic rupture of the distal myotendinous junction; for this reason she did not present contracture in extension of the knee but she presented dynamic contracture in flexion of the hip (Ely positive test), which generated great impact on walking. Surgical management with tenotomy of the anterior rectum was performed, obtaining good results. This pathology has low incidence and it has been reported little in the literature, so it is important to suspect it. Read More

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November 2020

Relationship between movement dysfunctions and sports injuries according to gender of youth soccer player.

J Exerc Rehabil 2020 Oct 27;16(5):427-431. Epub 2020 Oct 27.

Department of Kinesiology, College of Natural Science, Jeju National University, Jeju, Korea.

The purpose of this study is to investigate relationship between movement dysfunctions and sports injuries according to gender of youth soccer player. Thirty-eight middle school soccer players participated in this study and they were divided into male (n=19) and female (n=19) groups. The Functional Movement Screen (FMS) and the Quadriceps-angle (Q-angle) during single-leg squat were analyzed for identifying imbalance and asymmetry of the body, and sports injury questionnaire was examined for 6 months after FMS test. Read More

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October 2020