The interpretation of abdominal wall muscle recruitment strategies change when the electrocardiogram (ECG) is removed from the electromyogram (EMG)

The authors detail the experimental development of a technique for the reconstruction of the ureter using a tubular shape, muscle flap of the abdominal wall. the preliminary results indicate the feasibility of this surgical technique.

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Variability in Muscle Recruitment Strategy Between Operators During Assisted Assembly Tasks

Volume 1: Advances in Control Design Methods; Advances in Nonlinear Control; Advances in Robotics; Assistive and Rehabilitation Robotics; Automotive Dynamics and Emerging Powertrain Technologies; Automotive Systems; Bio Engineering Applications; Bio-Mechatronics and Physical Human Robot Interaction; Biomedical and Neural Systems; Biomedical and Neural Systems Modeling, Diagnostics, and Healthcare ◽

10.1115/dscc2018-9222 ◽

2018 ◽

Cited By ~ 2

Author(s):

Yingxin Qiu ◽

Keerthana Murali ◽

Jun Ueda ◽

Atsushi Okabe ◽

Dalong Gao

Keyword(s):

Upper Limb ◽

Lower Limb ◽

Wrist Joint ◽

Principal Component ◽

Classification Performance ◽

Body Motion ◽

Recruitment Strategy ◽

Support Vector ◽

Recruitment Strategies ◽

Muscle Recruitment

This paper reports the variability in muscle recruitment strategies among individuals who operate a non-powered lifting device for general assembly (GA) tasks. Support vector machine (SVM) was applied to the classification of motion states of operators using electromyography (EMG) signals collected from a total of 15 upper limb, lower limb, shoulder, and torso muscles. By comparing the classification performance and muscle activity features, variability in muscle recruitment strategy was observed from lower limb and torso muscles, while the recruitment strategies of upper limb and shoulder muscles were relatively consistent across subjects. Principal component analysis (PCA) was applied to identify key muscles that are highly correlated with body movements. Selected muscles at the wrist joint, ankle joint and scapula are considered to have greater significance in characterizing the muscle recruitment strategies than other investigated muscles. PCA loading factors also indicate the existence of body motion redundancy during typical pick-and-place tasks.

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A Case of a Ventral Hernia due to Rupture of the Abdominal Wall Muscle in a Patient with SLE on Long-term Steroid Therapy

Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) ◽

10.3919/jjsa.76.626 ◽

2015 ◽

Vol 76 (3) ◽

pp. 626-630

Author(s):

Masahiro FUKADA ◽

Nobuhisa MATSUHASHI ◽

Takao TAKAHASHI ◽

Kazuya YAMAGUCHI ◽

Shinji OSADA ◽

...

Keyword(s):

Abdominal Wall ◽

Ventral Hernia ◽

Steroid Therapy ◽

Abdominal Wall Muscle

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O50 ALTERATIONS IN THE ABDOMINAL WALL MUSCULATURE AFTER ENDOSCOPIC ANTERIOR AND OPEN POSTERIOR COMPONENT SEPARATION

British Journal of Surgery ◽

10.1093/bjs/znab396.049 ◽

2021 ◽

Vol 108 (Supplement_8) ◽

Author(s):

Erling Oma ◽

Jan Kim Christensen ◽

Jorge Daes ◽

Lars Nannestad Jorgensen

Keyword(s):

Abdominal Wall ◽

Case Series ◽

Muscle Thickness ◽

Component Separation ◽

Fascial Closure ◽

Lateral Abdominal Wall ◽

Transverse Abdominis ◽

Abdominal Wall Muscle ◽

Anterior Component Separation

Abstract Aim Effects of component separation (CS) on abdominal wall musculature have only been investigated in smaller case series. The study aimed to compare abdominal wall alterations following endoscopic anterior component separation (EACS) or transverse abdominis release (TAR). Material and Methods Computed tomography scans were evaluated in patients who underwent open ventral hernia repair with TAR or EACS. Lateral abdominal wall muscle thickness and displacement were compared with preoperative images after bilateral CS and the undivided side postoperatively after unilateral CS. Results In total, 105 patients were included. The mean defect width was 12.2 cm. Fifty-five (52%) and 15 (14%) underwent bilateral and unilateral EACS, respectively. Five (5%) and 14 (13%) underwent bilateral and unilateral TAR, respectively. Sixteen (15%) underwent unilateral EACS and contralateral TAR. Complete fascial closure was achieved in 103 (98%) patients. The external oblique and transverse abdominis muscles were significantly laterally displaced with a mean of 2.74 cm (95% CI 2.29-3.19 cm) and 0.82 cm (0.07-1.57 cm) after EACS and TAR, respectively. The combined thickness of the lateral muscles was significantly decreased after EACS (mean decrease 10.5% [5.8-15.6%]) and insignificantly decreased after TAR (mean decrease 2.6% [-4.8-9.5%]), mean reduction difference EACS versus TAR 0.22 cm (-0.01-0.46 cm). One (1%) patient developed an iatrogenic linea semilunaris hernia after EACS. The recurrence rate was 19% after mean 1.7 years follow-up. Conclusions The divided muscle was significantly more laterally displaced after EACS compared with TAR. The thickness of the lateral muscles was slightly decreased after EACS and unchanged after TAR.

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