To date and to our knowledge, no study has investigated the side, duration or number of audible popping sounds during upper cervical HVLA thrust manipulation. Therefore, the primary purpose of the ...

Methods Nineteen asymptomatic participants received two upper cervical thrust manipulations targeting the right and left C1–2 articulation, respectively.

Cavitation was significantly more likely to occur bilaterally than unilaterally during upper cervical HVLA thrust manipulation; that is, the popping sounds associated with C1–2 manipulation were 11 ...