The Effect of Joint Manipulation Techniques on Active Range of Motion in the Mid-Thoracic Spine of Asymptomatic Subjects

Abstract

This study assesses the effect of the manipulation of restricted thoracic spine segments on thoracic active range of motion (AROM). Range of motion (ROM) is measured routinely to assess joint mobility, tissue extensibility, and function of the spine and the extremities. Manipulation has been used to restore normal joint mechanics and increase ROM. However, no research specifically shows that ROM in the thoracic spine increases after spinal manipulation. Seventy-eight healthy subjects (29 male, 49 female), ages 18-44, were divided into three categories. Group 1 was the control, group 2 received mobility testing only, and group 3 received mobility testing and joint manipulation to a restricted segment. All subjects were pre-tested for AROM of T3-T8; then either rested, received mobility tests, or were manipulated, after which post-test measurements were performed. Forward bending and side bending right and left were measured. In a comparison of pre-treatment versus post-treatment AROM, a significant difference was seen in side bending to the left only. This demonstrates that one session of manipulation techniques can influence AROM in the mid-thoracic spine.