Table 1.

Inclusion criteria for the systematic review and meta-analysis.

Preclinical studies
	Inclusion criteria
Population	Peripheral motor nerve lesion in rat
Intervention	Muscle-in-vein conduit (MVC)
Comparison	Autologous nerve graft (ANG)
Outcome	Voluntary motor function Walking Track Analysis Grasping Strength Electrophysiology: Nerve conduction velocity (NCV) Compound Muscle Action Potential (CMAP) Histology Axon count, axon density, axon diameter, fiber diameter, thickness of the myelin sheath,
Study design	Experimental study in the rat Segmental nerve injury Study in English or German language
Clinical studies
	Inclusion criteria
Population	Peripheral nerve lesion in humans
Intervention	Muscle-in-vein conduit (MVC)
Comparison	Autologous nerve graft
Outcome	Sensory function: 2-point discrimination
Study design	Segmental nerve injury Study in English or German language