Objective: The purpose of this case series was to test the feasibility of using the MyoKinesthetic (MYK) System as a treatment-based classification system and intervention for a sample of patients with low back pain. Methods: This within-subject intervention was completed in a university athletic training clinic. Nine participants (mean age: 31 years) with a primary complaint of LBP were evaluated and included. An athletic trainer performed the initial assessment, which contained the following components: patient history, palpation, range of motion testing, lower quarter neurologic screening, MYK System posture screen, orthopedic special tests, and baseline data for pain intensity, disability, and function. All participants were treated with the MYK System. The primary outcomes were pain, disability, function, active range of motion, posture, and global efficacy of treatment. Results: The mean number of MYK treatments administered was 12.11 (SD = 6.25), and the mean number of days until discharge was 28.67 (SD = 9.38). A repeated-measures analysis of variance revealed statistically significant and clinically meaningful improvements in pain, disability, function, and posture from the initial evaluation to discharge and from the initial evaluation to a 1-month follow-up (P b .01). Conclusion: This study determined the feasibility of further evaluation of the MYK System as a treatment-based classification system and intervention for patients with low back pain. (J Chiropr Med 2017;16:111-121)