Classification of Chronic Back Muscle Degeneration after Spinal Surgery and Its Relationship with Low Back Pain
Asian Spine Journal
; : 516-521, 2016.
Article
en En
| WPRIM
| ID: wpr-131690
Biblioteca responsable:
WPRO
ABSTRACT
STUDY DESIGN: Retrospective case series. PURPOSE: To classify back muscle degeneration using magnetic resonance imaging (MRI) and investigate its relationship with back pain after surgery. OVERVIEW OF LITERATURE: Back muscle injury and degeneration often occurs after posterior lumbar surgery, and the degeneration may be a cause of back pain. However, the relationship between back muscle degeneration and back pain remains controversial. METHODS: A total of 84 patients (average age, 65.1 years; 38 men, 46 women) with lumbar spinal stenosis underwent posterior decompression surgery alone. MRI (1.5 tesla) was evaluated before and more than a year after surgery in all patients. Muscle on MRI was classified into three categories: low intensity in T1-weighted imaging, high intensity in T2-weighted imaging (type 1), high intensity in both T1- and T2-weighted images (type 2), and low intensity in both T1- and T2-weighted imaging (type 3). The prevalence of the types and their relationship with back pain (determined on a visual analog scale) were evaluated. RESULTS: MRI revealed muscle degeneration in all patients after surgery (type 1, 6%; type 2, 82%; and type 3, 12%). Type 2 was significantly more frequent compared with types 1 and 3 (p0.05). CONCLUSIONS: Various pathologies of back muscle degeneration after posterior lumbar surgery were revealed. Type 2 (fatty) change was most frequent, and other patients had type 3 (scar) or type 1 (inflammation or water-like) changes. According to the Modic classification of bone marrow changes, Modic type 1 change is associated with inflammation and back pain. However, no particular type of back muscle degeneration was correlated with back pain after surgery.
Palabras clave
Texto completo:
1
Base de datos:
WPRIM
Asunto principal:
Patología
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Estenosis Espinal
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Médula Ósea
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Imagen por Resonancia Magnética
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Prevalencia
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Estudios Retrospectivos
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Clasificación
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Dolor de la Región Lumbar
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Dolor de Espalda
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Descompresión
Tipo de estudio:
Observational_studies
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Prevalence_studies
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Risk_factors_studies
Límite:
Humans
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Male
Idioma:
En
Revista:
Asian Spine Journal
Año:
2016
Tipo del documento:
Article