Sonographic Quantification of Pronator Quadratus Activity During Gripping Effort

Shin, Won-Jeong; Kim, Jong-Pil; Kim, Jeong-Sang; Park, Hee Jung

doi:10.7863/ultra.15.02038

Cited by 6 publications

(3 citation statements)

References 39 publications

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“…Further studies have also identified the strong correlation with grip strength and pronation strength advocated for the need of normative values of pronation torque and grip strength in order to improve the quality of the clinical assessment of an injured wrist [ 18 ]. Testing these in our study identified similar traits as both outcomes were highly correlated with one another [ 19 ].…”

Section: Discussionmentioning

confidence: 90%

Volar plating: functional recovery of the pronator quadratus

Porter

MacInnes

Drew

et al. 2021

Eur J Orthop Surg Traumatol

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Purpose The pronator quadratus (PQ) is reflected in the surgical approach to the distal radius. This study explores the functional strength of PQ, 12 months after volar plating without repair of PQ. Methods A total of 135 patients were identified from our prospectively collected database. All volunteers had grip strength and pronation power tested in the treated and contralateral forearms at 45, 90 and 135 degrees of elbow flexion using a custom-built torque measuring device and hydraulic hand dynamometer to evaluate forearm pronation. Results Twenty-seven participants were included in the study. No significant difference was identified in mean peak pronation torque between the volar plated and non-treated forearms. Pronation strength was identified as being independent of angle of elbow flexion. Grip strength was correlated with forearm pronation showing no significant difference between groups. Conclusions Our results suggest adequate long-term (15–32 months) functional recovery of the pronator quadratus after volar plating. Level of Evidence III.

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Section: Discussionmentioning

confidence: 90%

Volar plating: functional recovery of the pronator quadratus

Porter

MacInnes

Drew

et al. 2021

Eur J Orthop Surg Traumatol

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“…They emphasized the importance of this muscle and postulated that deep head stabilizes the distal radioulnar joint and the superficial head initiates pronation. In addition to these functions, the PQ muscle is the key point indicator in the diagnosis of occult distal forearm fractures on plain radiographs [4,16]. However, sensitivity and specificity of the pronator sign has been questioned in the literature regarding the diagnosis of occult distal forearm fractures on plain radiographs [5,6,8,18].…”

Section: Discussionmentioning

confidence: 99%

“…While the superficial layer of PQ acts in coordination with the pronator teres and serves for forearm pronation, deep layer inserts joint capsule and take part in radio-ulnar joint stabilization [1][2][3]. In addition, both heads of the pronator quadratus also play a role in grip strength [4]. The obliteration of the fat plane between the pronator quadratus and the flexor digitorum profundus muscles which is a radiolucent plane that can be detected on lateral radiographs of the distal forearm namely the pronator sign has been reported since 1960s as an important diagnostic tool for the detection of the occult distal radius and ulna traumatic fractures [5].…”

Section: Introductionmentioning

confidence: 99%

Relationship of side dominance and ultrasonographic measurements of pronator quadratus muscle along with handgrip and pinch strength

et al. 2016

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Aims: We ascertained effects of hand dominance in both right and left-handed volunteers on the thickness and cross sectional area (CSA) of pronator quadratus (PQ) muscle as measured by the axial and sagittal views of ultrasound imaging. Secondly, we also aimed to document the extent of the relationship between the PQ measurements and handgrip. Materials and methods: Healthy adults from the volunteer medical staff were included in the study. Handedness was assessed via The Flinders Handedness survey. The sonographic appearance of the PQ was evaluated on sagittal and axial images for both hands. CSA of PQ muscle was digitally drawn and calculated on the axial plane. Handgrip was measured by using adjustable-handle dynamometer. Results: Eighty-nine healthy volunteers were included (54 right and 35 left-handed). Significant difference was detected between dominant and non-dominant hands in CSA and muscle thickness in both right and left-handed volunteers (p<0.05). These measurements were correlated with the handgrip strength (p<0.05, r=0.55, and r=0.43 for right-handed volunteers, r=0.67 and r=0.48 for left-handed volunteers, respectively). There were also significantly high correlations between the measurements of CSA and PQ thickness of the corresponding extremity in both right-handed and left-handed volunteers (p<0.05). Conclusions: A statistically significant difference exists between dominant and non-dominant hands in CSA and muscle thickness measured by US in both right and left handed volunteers, and this is correlated with handgrip strength. Hand dominance should be considered to compare healthy and affected sites during US of PQ while investigating for occult fractures of distal forearm or PQ atrophy due to anterior interosseous nerve injury.

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Ultrasound of the Pronator Quadratus PQ

Brasseur

2022

Ultrasonography for the Upper Limb Surgeon

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Sonographic Quantification of Pronator Quadratus Activity During Gripping Effort

Cited by 6 publications

References 39 publications

Volar plating: functional recovery of the pronator quadratus

Volar plating: functional recovery of the pronator quadratus

Relationship of side dominance and ultrasonographic measurements of pronator quadratus muscle along with handgrip and pinch strength

Ultrasound of the Pronator Quadratus PQ

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