scholarly journals A Dynamic Test to Identify the Potential Recess Between the Psoas Major and Quadratus Lumborum Muscles at the Supra-Iliac Level

2021 ◽  
Vol Volume 14 ◽  
pp. 3235-3238
Author(s):  
Huili Li ◽  
Rong Shi ◽  
Yun Wang
Keyword(s):  
Dynamic Test ◽  
Quadratus Lumborum ◽  
Psoas Major

Relationship between Trunk Muscularity and Club Head Speed in Male Golfers

2020 ◽  
Vol 41 (06) ◽  
pp. 419-423
Author(s):  
Yoka Izumoto ◽  
Toshiyuki Kurihara ◽  
Sumiaki Maeo ◽  
Takashi Sugiyama ◽  
Hiroaki Kanehisa ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Rectus Abdominis ◽  
Erector Spinae ◽  
Trunk Muscles ◽  
Bilateral Asymmetry ◽  
Lateral Abdominal Wall ◽  
Quadratus Lumborum ◽  
Club Head ◽  
The Right ◽  
Psoas Major

AbstractThis study examined how the volume of trunk muscles and its bilateral asymmetry are related to club head speed in golfers. Fourteen right-handed male golfers performed five driver shots, and the club head speed for each trial was calculated from a three-dimensional reflective marker position of the club head immediately before impact. The volume of each side of the rectus abdominis, erector spinae, psoas major, quadratus lumborum, lateral abdominal wall muscle, and multifidus was determined using magnetic resonance imaging. For each muscle, the ratio of the larger to smaller side in muscle volume was calculated to assess bilateral asymmetry. The club head speed correlated positively with the volume of each side of the rectus abdominis and erector spinae, left quadratus lumborum, and the asymmetric ratio of the psoas major (r=0.595–0.747), but negatively with the asymmetric ratio of the quadratus lumborum (r=−0.641). Multiple regression analysis revealed that the right erector spinae volume and the asymmetric ratio of the psoas major were significant contributors for the club head speed (R2=0.797). These results indicate that the variation in the club head speed can be strongly explained by the absolute volume and bilateral asymmetry of specific trunk muscles.

scholarly journals Ultrasound-Guided Quadratus Lumborum Block: An Updated Review of Anatomy and Techniques

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Hironobu Ueshima ◽  
Hiroshi Otake ◽  
Jui-An Lin
Keyword(s):  
Abdominal Surgery ◽  
Local Anesthetic ◽  
Future Research ◽  
Original Publication ◽  
Ultrasound Guided ◽  
Nerve Roots ◽  
Quadratus Lumborum ◽  
Lateral Posterior ◽  
Psoas Major ◽  
Block Approach

Purpose of Review. Since the original publication on the quadratus lumborum (QL) block, the technique has evolved significantly during the last decade. This review highlights recent advances in various approaches for administering the QL block and proposes directions for future research. Recent Findings. The QL block findings continue to become clearer. We now understand that the QL block has several approach methods (anterior, lateral, posterior, and intramuscular) and the spread of local anesthetic varies with each approach. In particular, dye injected using the anterior QL block approach spread to the L1, L2, and L3 nerve roots and within psoas major and QL muscles. Summary. The QL block is an effective analgesic tool for abdominal surgery. However, the best approach is yet to be determined. Therefore, the anesthetic spread of the several QL blocks must be made clear.

scholarly journals Effect of Passive Support of the Spinal Muscles on the Biomechanics of a Lumbar Finite Element Model

2020 ◽  
Vol 10 (18) ◽  
pp. 6278
Author(s):  
Inhan Kang ◽  
Minwook Choi ◽  
Deukhee Lee ◽  
Gunwoo Noh
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Fe Model ◽  
Follower Load ◽  
Muscle Properties ◽  
Quadratus Lumborum ◽  
Pure Moment ◽  
Psoas Major ◽  
External Loads ◽  
Spinal Muscles

Finite element (FE) modeling of the passive ligamentous spine is widely used to assess various biomechanical behaviors. Currently, FE models that incorporate the vertebrae, ligaments, and the personalized geometry of the bony spine may be used in conjunction with external loads from the muscles. However, while the muscles place a load (moment) on the spine and support it simultaneously, the effect of the passive support from the adjacent spinal muscles has not been considered. This study thus aims to investigate the effect of passive support from the psoas major, quadratus lumborum, and erector muscles on the range of motion (RoM) and intradiscal pressure (IDP) of the lumbar spine. Various L2-sacrum spinal models that differed only in their muscle properties were constructed and loaded with a pure moment (2.5–15.0 Nm) alone or combined with a compressive (440 or 1000 N) follower load. The RoM and IDP of the model that excluded the effect of muscles closely matched previous FE results under the corresponding load conditions. When the muscles (40–160 kPa) were included in the FE model, the RoM at L2 was reduced by up to 6.57% under a pure moment (10 Nm). The IDP was reduced by up to 6.45% under flexion and 6.84% under extension. It was also found that the erector muscles had a greater effect than the psoas major and quadratus muscles.

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