The phrase "a very tortuous" is correct and usable in written English.
It can be used to describe something that is extremely complicated, winding, or difficult to follow, often in a metaphorical sense.
Example: "The plot of the novel was a very tortuous journey, filled with unexpected twists and turns."
Alternatives: "a highly convoluted" or "an extremely complex".
Scotland's first minister told MSPs she was shocked there was no clarity on what the UK government wanted to achieve in its exit talks with the EU, which now looked like a "very long and very tortuous process".
The IMA being very tortuous, thus implying a difficult endovascular approach, we decided to perform a direct anastomosis between both ends of the inferior mesenteric artery instead, which seemed more feasible in our case.
With the very high aspect ratio lamellar crystals oriented perpendicular to the flux direction, the permeation pathway of oxygen became very tortuous and the oxygen barrier was significantly improved.
The good results obtained in the in vitro case validated the ability of the methodology to simulate stent-graft deployment in very tortuous arteries and led to think proper modelling of biomechanical environment could reduce the few local discrepancies found in the in vivo case.
If more than one endoprosthesis is implanted, the overlap between two elements should be >5 cm to avoid separation of the elements during the follow-up, especially in cases with very tortuous anatomy [ 49].
The 14 glass-ceramic restorations were difficult to analyze because of the very tortuous fracture surfaces made by the lithium disilicate crystals that camouflage the fracture features (Fig. 2).
Unlike coronary vasculature, intracranial vessels are more challenging to stent because they are difficult to navigate due to their very tortuous course and sharp angles, and those vessels are delicate and more susceptible to injury due to lack of supporting connective tissue.
Although clear OCT imaging was obtained by the use of OBC balloon blocking blood flow, the need to occlude blood limits the clinical application of OCT, especially for patients with left main disease, ostial disease, congestive heart failure and very tortuous lesions.
Johnny Mnemonic was a really tortuous experience for me.
