Regeneration of nerve crush injury using adipose-derived stem cells: A multimodal comparison.

INTRODUCTION: To restore full function following nerve crush injuries is critical but challenging. In an attempt to develop a viable therapy, we evaluated the effect of rat adipose-derived stem cells (rASC) in 2 different settings of a sciatic crush injury model. METHODS: In the first group, after 14 days of nerve crush injury, rASCs were injected distal to the lesion under ultrasound guidance. In the other group, alleviation of compression through clip removal (CR) was combined with epineural injection of rASCs. Gait analyses, MRI, gastrocnemius muscle weight ratio (MWR), and histomorphometry were performed for outcome analysis. RESULTS: CR combined with rASC injection resulted in less muscle atrophy, as evidenced by MWR. These findings are further supported by better functional and anatomical outcomes. DISCUSSION: Animals treated with CR and epineural stem cell injection showed enhanced anatomical and functional recovery. Muscle Nerve 58: 566-572, 2018.