Spondylolysis is a specific defect in the pars interarticularis unit. This defect can lead to small stress fractures (breaks) in the vertebrae. 1 article features images from this case

2024年12月19日 · Spondylolysis, commonly known as pars interarticularis defect or pars defect, is a defect in the pars interarticularis, the portion of the vertebral arch that connects the superior and inferior articular facets. It usually occurs in the lumbar spine.

2024年11月22日 · The pars interarticularis or simply pars (plural: partes interarticulares) is the part of a vertebra located between the superior and inferior articular processes. In the axis and the thoracolumbar spine, the pars interarticularis is a narrow …

CT scans better visualize cortical integrity compared to MRI, allowing CT to identify chronic fractures with sclerotic margins with very high fidelity . It has also been suggested that CT be used as the primary imaging modality in patients with dysplastic or abnormal pars anatomy due to higher false-negative and false-positives rates on MRI in ...

2018年11月1日 · On a single CT, it is difficult to identify the stage of healing of a pars fracture but with a previous CT for comparison, the relative change in the degree of callus formation and fracture site lucency can provide differentiation between a developing and healing fracture, and provide subjective estimation of the degree of healing.

2023年2月5日 · Pars interarticularis injury, a condition characterized by a fracture in the pars isthmus, is a common cause of low back pain, mainly among young athletes. This condition must be promptly diagnosed to avoid chronic pain, increase the rate of healing as it is a time depending stage pathology, and improve clinical outcomes.

stress fracture with a computed tomography (CT) scan confirmed the presence of a chronic bilateral pars interarticularis defect at the level of the second lumbar (L2)

2 天之前 · The inclusion criteria were as follows: (1) young male participants engaged in high-intensity activities; (2) clear diagnosis of bilateral L5 pars fractures confirmed by X-ray and CT; (3) Pfirrmann grade I to III; (4) complete lumbar X-rays (standing position), CT scans with plain and three-dimensional reconstructions, and MRI; (5) CT sagittal ...

Results: Twenty-five incomplete fractures were identified in 23 patients on CT. All fractures involved the inferior or infero-medial cortex of the pars and propagated superiorly or superolaterally. Ninety-two percent of incomplete fractures demonstrated either complete or partial healing on follow-up imaging.

2008年5月1日 · Twenty-five incomplete fractures were identified in 23 patients on CT. All fractures involved the inferior or infero-medial cortex of the pars and propagated superiorly or superolaterally. Ninety-two percent of incomplete fractures demonstrated either complete or partial healing on follow-up imaging. Two (8%) cases progressed to complete fractures.