Diagnostic Interest of Bone Tomoscintigraphy in the Search for Cervical Pseudarthrosis

Обзор

Cervical pseudarthrosis is a classic complication and a challenge for challenge for spine surgeons. The rate of pseudarthrosis can range from 3 to 15%, and depend greatly on the patient, the approach the number of levels operated on. Although some patients remain asymptomatic, most require revision surgery instability, cervical or radicular pain. Diagnosis of cervical pseudarthrosis remains difficult. The clinical presentation is non-specific, and there is no consensus on the imaging imaging. Radiographic evaluation lacks sensitivity. The dynamic images require prior calibration and anatomical landmarks difficult to visualize. Angle measurement lacks reproducibility and sensitivity. CT scans, currently considered the gold standard as the gold standard, provides valuable morphological data but does not provide information on the functional nature of bone bridges the functional nature of bone bridges and apparent consolidation, particularly incomplete. At the same time, functional imaging using bone scintigraphy has been historically limited by lack of spatial resolution, absence of anatomical and radiation attenuation for deep structures.The advent of hybrid imaging makes it possible to these limitations. Recently, the 6 to 16 scanners fitted to gamma cameras enable a detailed study correlations between functional and anatomical data. Interpretation criteria remain unestablished, however, and only one study reports the use of hydric bone imaging in the study of cervical pseudarthrosis. All patients were positive on scintigraphy. However, given the absence of "healthy" patients and the small number of patients the diagnostic value of bone scintigraphy in this indication.

Вмешательства

• Другое Bone scintigraphy
  A bone scintigraphy exam will be performed in addition of the already performed scanner in the current practice

Первичные конечные точки

• Evaluating the sensitivity, specificity and positive predictive value of bone scintigraphy to diagnose cervical pseudarthrosis compared to the reference method [Срок оценки: 12 months]

Вторичные конечные точки (2)

• Comparison of the sensitivity, specificity, and positive predictive value (PPV) of CT-scan versus bone scintigraphy in diagnosing cervical pseudarthrosis [Срок оценки: 12 months]
• Assess the ability of scintigraphy to predict the probability of final consolidation in symptomatic patients at one year post arthrodesis [Срок оценки: 12 months]

Критерии участия

Критерии включения

• Patients over 21 years of age
• Patients who have undergone cervical arthrodesis and are being treated at Clinique de la Sauvegarde or Clinique Convert
• Patients with a NDI clinical score at 1 year greater than 5
• Patient affiliated to/ or beneficiary of a Social Security scheme as definied by the law

Критерии исключения

• Patients whose clinical condition requires rapid treatment that can't wait for examinations to be carried out
• Pregnancy and breastfeeding
• Protected person (curatorship, guardianship, safeguard of justice)
• History of hypersensitivity to the active substance ( sodium oxidronate) or to any of its constituents

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение

Не применимо

Модель

Одна группа

Маскирование

Открытое

Основная цель

Диагностика

Центры проведения

Франция · 1 центр

• Clinique Convert ( INA) — Bourg-en-Bresse

Идентификаторы

NCT: NCT07140432 · 2024-A00659-38

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

Открыть это исследование на ClinicalTrials.gov ↗