Gastric band malposition is an early complication from laparoscopic gastric band procedures which are performed for obesity. It can occur as in isolation or with other gastric band complications.
As surgical experience of laparoscopic gastric banding has accumulated, it has become a relatively rare complication.
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Radiographic features
Although CT and fluoroscopy are commonly used to assess for gastric band complications, malpositioning is usually evident on plain radiographs.
Radiographic assessment primarily focuses on ascertaining the phi (φ) angle on AP views between:
the vertical axis of the spine
the long axis of the gastric band
A phi angle of 4-58º is deemed normal.
Treatment and prognosis
The gastric band can usually be repositioned laparoscopically, allowing for continued weight loss.
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