Gastrocnemius Recession for the Treatment of Tibialis Anterior Tendinopathy.
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ABSTRACT:
SUBMITTER: Gossett L
PROVIDER: S-EPMC8500391 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:Gastrocnemius aponeurotic recession is the surgical treatment for symptomatic gastrocnemius contracture. Endoscopic gastrocnemius recession procedures has been developed recently and reported to have fewer complications and better cosmetic outcomes. Classically, this is performed at the aponeurosis distal to the gastrocnemius muscle attachment. We describe an alternative endoscopic approach in which the intramuscular portion of the aponeurosis is released.
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Project description:High plantar flexor moment during the stance phase is known to cause high plantar pressure under the forefoot; however, the effects on plantar pressure due to a change of gastrocnemius medialis (GM) activity during gait, have not been investigated to date. Reciprocal inhibition is one of the effects of electrical stimulation (ES), and is the automatic antagonist alpha motor neuron inhibition which is evoked by excitation of the agonist muscle. The aim of this study was to investigate the influences of ES of the tibialis anterior (TA) on plantar pressure and the GM activity during gait in healthy adults. ES was applied to the TAs of twenty healthy male adults for 30 minutes at the level of intensity that causes a full range of dorsiflexion in the ankle (frequency; 50 Hz, on-time; 10 sec, off-time; 10 sec). Subjects walked 10 meters before and after ES, and we measured the peak plantar pressure (PP), pressure time integral (PTI), and gait parameters by using an F-scan system. The percentage of integrated electromyogram (%IEMG), active time, onset time, peak time, and cessation time of TA and GM were calculated. PP and PTI under the forefoot, rear foot, and total plantar surface significantly decreased after the application of ES. Meanwhile, changes of gait parameters were not observed. %IEMG and the active time of both muscles did not change; however, onset time and peak time of GM became significantly delayed. ES application to the TA delayed the timing of onset and peak in the GM, and caused the decrease of plantar pressure during gait. The present results suggest that ES to the TA could become a new method for the control of plantar pressure via modulation of GM activity during gait.
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2015-12-02 | GSE71029 | GEO
Project description:Muscle-specific populations of proprioceptive sensory neurons form selective connections with spinal motor neurons, implying the existence of molecular distinctions between proprioceptor subpopulations. Here, we compare the gene expression profiles of proprioceptors that supply an antagonistic muscle pair functioning at a single hindlimb joint.
2015-12-02 | GSE70730 | GEO
Project description:In an effort to better restore normal joint function and kinematics, recent emphasis has been placed on surgical techniques that provide a more anatomic reconstruction of the anterior cruciate ligament (ACL). With femoral tunnel placement shown to play a vital role in the biomechanics, stability, and clinical outcomes after ACL reconstruction, approaches that better approximate the ACL's native femoral origin have been adopted. The independent anteromedial portal technique is thought to better position the femoral tunnel within the native ACL footprint and leave the graft more posteroinferior on the wall of the lateral femoral condyle than the more traditional transtibial approach. This article outlines the surgical technique for an anteromedial portal ACL reconstruction with a tibialis anterior allograft fixed with the Mitek Femoral and Tibial Intrafix sheath and screw system (DePuy Synthes, Raynham, MA).
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Project description:Muscle-specific populations of proprioceptive sensory neurons form selective connections with spinal motor neurons, implying the existence of molecular distinctions between proprioceptor subpopulations. Here, we compare the gene expression profiles of proprioceptors that supply an antagonistic muscle pair functioning at a single hindlimb joint.
2015-12-02 | GSE71028 | GEO
Project description:BackgroundThe Ponseti method has revolutionized the treatment of idiopathic clubfoot, but recurrence remains problematic. Dynamic supination is a common cause of recurrence, and the standard treatment is tibialis anterior tendon transfer using an external button. Although safe and effective, the placement of the button on the sole creates a pressure point, which can lead to skin ulceration. In our institution, a suture button has been used for the tibialis anterior tendon transfer and we report our results here.MethodsTwo senior authors' case logs were retrospectively reviewed to identify 23 patients (34 feet) for tibialis anterior tendon transfer using a suture button. Complications and additional operative procedures were assessed by reviewing operative notes, follow-up visit clinic notes, and radiographs. The mean age of the patients was 6 years 2 months (SD 40 months) and the average follow-up duration was 67.1 weeks (SD 72 weeks).ResultsThere were 5 complications (14.7%). Recurrence occurred bilaterally in 1 patient (5.9%) but did not require reoperation. Other complications included a cast-related pressure sore (2.9%) and an infection (2.9%) requiring irrigation with debridement along with hardware removal.ConclusionsTibialis anterior tendon transfer using a suture button was a safe procedure with theoretical advantage of providing stronger fixation and reducing the risk of skin pressure necrosis compared to the standard external button technique. We believe a suture button could allow earlier rehabilitation and may afford stronger ankle eversion. Prospective studies are required to compare the differences in functional outcomes between the procedures.Level of evidenceLevel IV, case series, therapeutic study.
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Project description:Intravital imaging by multiphoton microscopy is a powerful tool to gain invaluable insight into tissue biology and function. Here, we provide a step-by-step tissue preparation protocol for imaging the mouse tibialis anterior skeletal muscle. Additionally, we include steps for jugular vein catheterization that allow for well-controlled intravenous reagent delivery. Preparation of the tibialis anterior muscle is minimally invasive, reducing the chances of inducing damage and inflammation prior to imaging. The tibialis anterior muscle is useful for imaging leukocyte interaction with vascular endothelium, and to understand muscle contraction biology. Importantly, this model can be easily adapted to study neuromuscular diseases and myopathies.
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Project description:Tenosynovitis of the tibialis anterior tendon may occur as an overuse injury due to repetitive foot dorsiflexion. Most cases respond to conservative treatment with rest, shoe modification, anti-inflammatory agents, and physical therapy. Surgery may be required for chronic cases recalcitrant to conservative treatment. Other causes of tibialis anterior tenosynovitis include rheumatologic and infectious conditions. Classically, an operation on the tibialis anterior tendon is performed with open approach requiring dissection of the extensor retinacula. The purpose of this Technical Note is to describe the technical details of a tendoscopic approach to synovectomy of the tibialis anterior tendon. This can preserve the integrity of the extensor retinacula.
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Project description:We generated transgenic mice expressing constitutively SOCS-3 specifically in skeletal muscle. SOCS proteins are implicated in the negative regulation of various pathways including insulin signaling pathway. Our transgenic mice are predisposed to obesity and systemic insulin resistance compared to control mice. We used microarrays to detail the variations of gene expression in muscle from transgenic mice versus controls. Keywords: transgenic, tibialis anterior, SOCS-3
2009-03-01 | GSE11105 | GEO