Journal: medRxiv
Article Title: Changes in Muscle Activation and Joint Motion During Walking After Transtibial Amputation with Sensory Feedback from Spinal Cord Stimulation: A Case Study
doi: 10.1101/2024.12.27.24319684
Figure Lengend Snippet: Recording setup and SCS electrode locations. (A) Walking with real-time spinal cord stimulation (SCS). Loading recorded from sensorized insoles linearly modulated the stimulation amplitude. SCS provided sensory feedback. Electromyography (EMG) recorded muscle activity from the residual and intact limb muscles. Motion capture recorded limb position for kinematic analysis. (B) Location of the SCS electrodes, as confirmed from X-rays, relative to spinal vertebral segments at 1-week post-implant. (C) Schematic of the muscles where EMG was recorded. Functional groupings of muscles are indicated by color: hip abductor (teal), knee extensors (dark blue), knee flexors (dark orange), ankle extensors (light blue), and ankle flexors (light orange).
Article Snippet: We positioned bipolar pairs of surface EMG electrodes (Ag|AgCl disposable dual EMG electrodes, MVAP Medical, Thousand Oaks, CA) on the following proximal leg muscles bilaterally: hip abductor (TFL), knee extensors (rectus femoris (RF) and vastus lateralis (VL)), knee flexors (biceps femoris (BF), and semitendinosus (ST)), ankle flexor (tibialis anterior (TA)), and ankle extensors (lateral gastrocnemius (LG) and medial gastrocnemius (MG)) ( ).
Techniques: Activity Assay, Muscles, Functional Assay