Acute nerve compression at low pressures has a conditioning lesion effect on rat sciatic nerves.

Effects of acute compression for 2 hours around the sciatic nerve trunk at 30 or 80 mmHg on the regeneration potential in rat sciatic nerves were studied. Sham compression or mobilization was performed contralaterally. A week later a crush injury was inflicted proximal to the compressed segment. After another 3 or 6 days the length of axonal outgrowth was measured, using the pinch test technique. We found that compression at either level caused an increased length of axonal outgrowth compared to the mobilized or sham-compressed nerves. The results show that an acute compression at low pressures does have a conditioning lesion effect on peripheral nerves.