Electromyographic activity in erector spinae muscles during body bending movements in patients with low back pain

An intramuscular epidermal cyst without subcutaneous involvement is extremely rare. The patient presented with low back pain. Spinal magnetic resonance imaging indicated spindle-shaped mass in the right erector spinae muscles located at L3 to L5 level without any connection with subcutaneous tissue. The patient underwent operation for removal of intramuscular cystic lesion. The tumor was totally removed and pathologically confirmed with epidermal cyst. Unlike typical epidermal cyst, the patient had a characteristic clinical manifestation of mild low back pain without palpable mass and local tenderness.

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Association between spectral characteristics of paraspinal muscles and functional disability in patients with low back pain: a cohort study

BMJ Open ◽

10.1136/bmjopen-2017-017091 ◽

2018 ◽

Vol 8 (2) ◽

pp. e017091 ◽

Cited By ~ 2

Author(s):

Shin-Yi Chiou ◽

Ermis Koutsos ◽

Pantelis Georgiou ◽

Paul H Strutton

Keyword(s):

Low Back Pain ◽

Back Pain ◽

Peak Power ◽

Functional Disability ◽

Spectral Characteristics ◽

Peak Torque ◽

Healthy Adults ◽

Erector Spinae ◽

Emg Activity ◽

Low Back

ObjectivesCharacteristics of muscle activity, represented by surface electromyography (EMG), have revealed differences between patients with low back pain (LBP) and healthy adults; how they relate to functional and clinical parameters remains unclear. The purpose of the current study was to examine the correlation between frequency characteristics of EMG (analysed using continuous wavelet transform (CWT) analysis) and patients’ self-rated score of disability.Design and settingThis is a case-control study with 15 patients with mechanical LBP without radicular symptoms. Patients were recruited from the orthopaedic clinic at Charing Cross Hospital. Ten healthy adults were recruited from the staff working in the hospital and associated university. Patients completed the Roland-Morris Disability Questionnaire (RMDQ) and bilateral EMG activity was obtained from erector spinae at vertebral levels L4 and T12. Subjects performed three brief maximal voluntary isometric contractions (MVICs) of the back extensors and the torque was measured using a dynamometer. CWT was applied to the EMG signals of each muscle in a 200 ms window centred around the peak torque obtained during the MVICs. The ratio (low/high frequencies) of the energy, the peak power and the frequency of the peak power were calculated for each recording site, averaged and correlated with the individual’s RMDQ score.ResultsPatients had lower peak power (T12 and L4) and lower frequency of the peak power (at T12) than the healthy adults. Additionally, RMDQ positively correlated to the average ratio of energy at T12 (r=0.63; p=0.012), that is, greater self-rated disability corresponded to a dominant distribution of energy in the lower frequencies.ConclusionThe current findings reveal alterations in EMG profile and its association with self-related back pain disability, suggesting that spectral characteristics of EMG reflect muscle function.

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Erector spinae plane block: a new option for managing acute axial low back pain in the emergency department

Pain Management ◽

10.2217/pmt-2021-0004 ◽

2021 ◽

Author(s):

Alexander J Anshus ◽

Jessica Oswald

Keyword(s):

Emergency Department ◽

Low Back Pain ◽

Back Pain ◽

Length Of Stay ◽

Case Series ◽

Erector Spinae ◽

Low Back ◽

Analog Scale ◽

Acute Low Back Pain ◽

Erector Spinae Plane Block

Aim: To evaluate pain and length of stay outcomes in six patients who received an erector spinae plane block (ESPB) in the emergency department (ED) for low back pain. Materials & methods: A case series of six patients who received unilateral or bilateral ESPB after presenting to the ED for acute atraumatic axial low back pain. Results: The average visual analog scale pain score reduction was 81.8%, and length of stay after ESPB was 73.5 min. No postprocedure opiates in the ED or after discharge were required. Conclusion: The ESPB is a rapid, safe and opiate-sparing option for the treatment of acute low back pain.

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Lumbar erector spinae plane block associated with dry needling could be a winning strategy in the management of low back pain

Journal of Clinical Anesthesia ◽

10.1016/j.jclinane.2019.109686 ◽

2020 ◽

Vol 61 ◽

pp. 109686

Author(s):

Pierfrancesco Fusco ◽

Stefano Di Carlo ◽

Roberta Chiavari ◽

Valeria De Paolis ◽

Emilio Tonelli ◽

...

Keyword(s):

Low Back Pain ◽

Back Pain ◽

Winning Strategy ◽

Erector Spinae ◽

Low Back ◽

Dry Needling ◽

Erector Spinae Plane Block

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Lumbar Multifidus and Erector Spinae Muscle Synergies in Patients with Nonspecific Low Back Pain During Prone Hip Extension: A Cross‐sectional Study

PM&R ◽

10.1002/pmrj.12002 ◽

2019 ◽

Vol 11 (7) ◽

pp. 694-702 ◽

Cited By ~ 1

Author(s):

Peemongkon Wattananon ◽

Sheri P. Silfies ◽

Jarugool Tretriluxana ◽

Wattana Jalayondeja

Keyword(s):

Low Back Pain ◽

Back Pain ◽

Cross Sectional Study ◽

Erector Spinae ◽

Muscle Synergies ◽

Low Back ◽

Sectional Study ◽

Cross Sectional ◽

Lumbar Multifidus ◽

Hip Extension

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Change in Regional Activity of the Quadratus Lumborum During Bridge Exercises

Journal of Sport Rehabilitation ◽

10.1123/jsr.2019-0225 ◽

2020 ◽

pp. 1-9

Author(s):

Tomoki Oshikawa ◽

Gen Adachi ◽

Hiroshi Akuzawa ◽

Yu Okubo ◽

Koji Kaneoka

Keyword(s):

Low Back Pain ◽

Back Pain ◽

Lumbar Spine ◽

Trunk Muscles ◽

Electromyographic Activity ◽

Low Back ◽

Maximal Voluntary Isometric Contraction ◽

Quadratus Lumborum ◽

Activity Measurements ◽

Measurement Design

Context: The quadratus lumborum (QL) is expected to contribute to segmental motor control of the lumbar spine to prevent low back pain. It has different layers (anterior [QL-a] and posterior [QL-p] layers), whose functional differences are becoming apparent. However, the difference between the QL-a and QL-p activities during bridge exercises utilized in rehabilitation is unclear. Objective: To compare QL-a and QL-p activities during bridge exercises. Design: Repeated-measurement design was used to assess electromyographic activity of trunk muscles recorded during 14 types of bridge exercises. Setting: University laboratory. Participants: A total of 13 healthy men with no history of lumbar spine disorders participated. Intervention: The participants performed 14 types of bridge exercises (3, 3, and 8 types of side bridge, back bridge, and front bridge [FB], respectively). Main Outcome Measures: Fine-wire electromyography was used for QL-a and QL-p activity measurements during bridge exercises. Results: Both QL-a and QL-p showed the highest activity during the side bridge with hip abduction (47.3% [29.5%] and 43.0% [32.9%] maximal voluntary isometric contraction, respectively). The activity of the QL-a was significantly higher than that of the QL-p during back bridge with ipsilateral leg lift and FB elbow–toe with ipsilateral arm and contralateral leg lift (P < .05). With regard to the QL-p, the activity of the FB hand–knee with contralateral arm and ipsilateral leg lift, the FB elbow–knee with contralateral arm and ipsilateral leg lift, and the FB elbow–toe with contralateral arm and ipsilateral leg lift were significantly higher than that of the FB elbow–knee and FB elbow–toe (P < .05). Conclusion: This study indicates different regional activities; the QL-a activated during the back bridge with ipsilateral leg lift and FB with ipsilateral arm lift, and the QL-p activated during the FB with ipsilateral leg lift. These results have implications for the rehabilitation of low back pain or lumbar scoliosis patients based on QL recruitment.

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