Cavitation

Differences in force-time parameters and electromyographic characteristics of two high-velocity, low-amplitude spinal manipulations following one another in quick succession

Lindsay M. Gorrell, Philip J. Conway & Walter Herzog Chiropractic & Manual Therapies volume 28, Article number: 67 (2020) Abstract Background Spinal manipulative therapy is an effective treatment for neck pain. However, the mechanisms underlying its clinical efficacy are not fully understood. Previous studies have not systematically compared force-time parameters and electromyographic responses associated with […]

Relationship Between Subjective Experience of Individuals, Practitioner Seniority, Cavitation Occurrence, and 3-Dimensional Kinematics During Cervical Spine Manipulation

JMPT. November–December, 2017 Volume 40, Issue 9, Pages 643–648 Bernard Van Geyt, MSc Abstract Objective The purpose of this study was to assess individual subjective experience (ISE) of the recipients of a cervical manipulation and to analyze the influence of kinematics, cavitation occurrence, and practitioner seniority on individual experience. Methods Practitioners with different seniority (years […]

Beliefs in the population about cracking sounds produced during spinal manipulation

Joint Bone Spine. 2018 Mar;85(2):239-242. doi: 10.1016/j.jbspin.2017.04.006. Epub 2017 Apr 26. Demoulin C Abstract OBJECTIVES: To examine beliefs about cracking sounds heard during high-velocity low-amplitude (HVLA) thrust spinal manipulation in individuals with and without personal experience of this technique. METHODS: We included 100 individuals. Among them, 60 had no history of spinal manipulation, including 40 […]

Real-Time Visualization of Joint Cavitation

Gregory N. Kawchuk,  Abstract Cracking sounds emitted from human synovial joints have been attributed historically to the sudden collapse of a cavitation bubble formed as articular surfaces are separated. Unfortunately, bubble collapse as the source of joint cracking is inconsistent with many physical phenomena that define the joint cracking phenomenon. Here we present direct evidence […]

What’s actually happening when you crack your knuckles?

By Megan Thielkingmegan.thielking@vox.com Feb 17, 2015, 11:00am EST There’s a long-held myth that cracking your knuckles can give you arthritis. The sound definitely might cause the people around you to cringe, but what’s making those noises and is it actually bad for you? Is cracking your knuckles bad for you? You might wince when you […]

Ultrasound Imaging of the Presence of Intra-articular Gas Bubbles After Chiropractic Manipulation

ULTRASOUND IMAGING OF THE TRAPEZIOMETACARPAL ARTICULAR CAVITY TO INVESTIGATE THE PRESENCE OF INTRAARTICULAR GAS BUBBLES AFTER CHIROPRACTIC MANIPULATION Allan R. Jones, MT Objective: The purpose of this study was to investigate the presence of intraarticular gas bubbles in the trapeziometacarpal joint cavity after chiropractic manipulation with audible cavitation and to assess the state of the […]

Ultrasound Imaging of the Trapeziometacarpal Articular Cavity to Investigate the Presence of Intraarticular Gas Bubbles After Chiropractic Manipulation

J Manipulative Physiol Ther. 2014 Aug 8. pii: S0161-4754(14)00113-4. doi: 10.1016/j.jmpt.2014.06.002. [Epub ahead of print] Ultrasound Imaging of the Trapeziometacarpal Articular Cavity to Investigate the Presence of Intraarticular Gas Bubbles After Chiropractic Manipulation. Jones AR. Abstract OBJECTIVE: The purpose of this study was to investigate the presence of intraarticular gas bubbles in the trapeziometacarpal joint […]

What Causes a Neck to Crack?

Q. Why do necks crack?

Bilateral and multiple cavitation sounds during upper cervical thrust manipulation

James Dunning BMC Musculoskeletal Disorders 2013, 14:24 Abstract Background The popping produced during high-velocity, low-amplitude (HVLA) thrust manipulation is a common sound; however to our knowledge, no study has previously investigated the location of cavitation sounds during manipulation of the upper cervical spine. The primary purpose was to determine which side of the spine cavitates […]

Bilateral and multiple cavitation sounds during upper cervical thrust manipulation

James Dunning BMC Musculoskeletal Disorders 2013, 14:24 doi:10.1186/1471-2474-14-24 Published: 15 January 2013 © 2013 Dunning et al.; licensee BioMed Central Ltd. Abstract Background The popping produced during high-velocity, low-amplitude (HVLA) thrust manipulation is a common sound; however to our knowledge, no study has previously investigated the location of cavitation sounds during manipulation of the upper […]

Audible Sounds Associated with Spinal Manipulation – A Snapshot Summary Report (Nov 2012) [PDF]

This is a PDF published by the National Council for Osteopathic Research. DOWNLOAD FILE HERE

Does an audible release improve the outcome of a chiropractic adjustment?

J Can Chiropr Assoc. 2004 Sep; 48(3): 237–239. Does an audible release improve the outcome of a chiropractic adjustment? J Can Chiropr Assoc. 2004 Sep; 48(3): 237–239. Clinical scenario A 24-year-old female presented to the chiropractic clinic with low back pain and neck pain. During the chiropractic treatment, the patient enquired about the significance of […]