Figure 3: Availability of L4 as a source nerve. (A) Positive waves or denervated potentials occurred in the QF, SM, TA, and GC. (B) Normal muscular action potentials were recorded from the same target muscles. (C) BBB scores differed between the two treatments. Data are expressed as the mean ± SEM (n = 10; repeated-measures analysis of variance). BBB: Basso, Beattie and Bresnahan rating scale; GC: gastrocnemius; QF: quadriceps femoris; SM: semimembranosus; TA: tibialis anterior.