Lumbosakral Radikülopatiler
Özet
Lumbosakral radikülopatiler, bel ağrısının önde gelen nedenlerinden olup, en sık intervertebral disk patolojileri ve dejeneratif omurga hastalıkları nedeniyle sinir köklerinin basıya uğraması veya irritasyonu sonucu gelişir. Genellikle orta yaş grubunda ortaya çıkan bu klinik tabloda, en sık L5 ve S1 sinir kökleri etkilenir. Hastalar radiküler ağrı, dermatomal parestezi, ilgili miyotomda güçsüzlük, atrofi ve derin tendon reflekslerinde azalma veya kayıp gibi semptomlarla başvururlar. Tanı sürecinde anamnez ve fizik muayene temel basamaklar olup, düz bacak kaldırma gibi manevralar alt lumbar kök etkilenimini göstermede etkilidir. Teşhisi doğrulamak için manyetik rezonans görüntüleme (MRG) ile anatomik yapı ve bası mekanizmaları gösterilirken; elektrodiagnostik çalışmalar (EMG) ise fonksiyonel durumu ortaya koyar. İğne EMG, duysal yakınmalara rağmen duysal ileti çalışmalarının normal kalması eşliğinde aksonal hasarı saptayarak ayırıcı tanıda ve lezyonun kronikliğinin belirlenmesinde kritik bir rol oynar. Geniş bir ayırıcı tanı yelpazesine sahip olan bu patolojide, neoplastik, enfeksiyöz (tüberküloz, CMV), metabolik (diyabetik amyotrofi) veya vasküler nedenlerin de dışlanması gerekir.
Lumbosacral radiculopathies are leading causes of low back pain and primarily develop due to nerve root compression or irritation resulting from intervertebral disc pathologies and degenerative spinal diseases. In this clinical condition, which generally emerges in middle-aged individuals, L5 and S1 nerve roots are most commonly affected. Patients present with symptoms such as radicular pain, dermatomal paresthesias, weakness in the corresponding myotome, atrophy, and decreased or lost deep tendon reflexes. Medical history and physical examination are fundamental steps in the diagnosis process, and maneuvers like the straight leg raise test are effective in demonstrating lower lumbar nerve root involvement. To confirm the diagnosis, magnetic resonance imaging (MRI) demonstrates the anatomical structure and compression mechanisms, whereas electrodiagnostic studies (EMG) reveal the functional status. Needle EMG plays a critical role in differential diagnosis and determining the chronicity of the lesion by detecting axonal damage findings alongside normal sensory nerve conduction studies despite the presence of sensory complaints. Having a broad range of differential diagnosis, this pathology requires the exclusion of neoplastic, infectious (tuberculosis, CMV), metabolic (diabetic amyotrophy), or vascular causes as well.
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