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Sunbury Chiropractor | Sunbury chiropractic care | PA | Chiropractic Adjustment


Affordable Chiropractic Care,  Backed by Experience

(570) 286-0170

Chiropractic Adjustment

The Chiropractic Adjustment is the primary focus of the care provided in our office. It is referred to as Chiropractic Manipulative Therapy, by most insurance companies and by state and federal government programs. The adjustment is a specific form of joint manipulation and is unique to the chiropractic profession. It's goal is to restore alignment and maximal pain-free movement, to a musculoskeletal system, which is in postural balance. Joint manipulation accomplishes this goal in the following ways:

Increasingly Join Extensibility

Joint manipulation promotes optimal, pain free movement by maintaining extensibility of joint and other periarticular structures or by increasing extensibility in the presence of periarticular restrictions. Restrictions in the joint capsule usally are accompanied by a corresponding limitation in joint range of motion.

Although theoretically the one structure being affected by joint manipulation techniques is the joint capsule, in reality it is impossible to isolate the techniques to this tissue. All periarticular tissue, including muscles, tendons and fascia, are affected by joint manipulation techniques.

Correcting Positional Faults

Joint surfaces can alter their position in relation to one another. If the positional abnormality is severe, it is called a subluxation; however if minimal it is considered a positional fault. Even minimal displacement can place abnormal stress on periarticular structures and thus can be a source of pain. Manipulations of one of the joint surfaces in the direction consistent with realigning it into proper position is thought to normalize the static positioning of one joint surface in relation to the other, thus reducing pain. Positional faults are especially common in the spine.


Articular surfaces are avascular and receive their nutrition from synovial fluid. For diffusion of nutrients to occur, the synovial fluid must circulate within the capsule to allow nutrients to be in contact with the articular surface. Joint movement through functional activities provides a mechanism for the circulation of synovial fluid in the normal joint. Joints that are restricted often cannot obtain adequate nutrition because of insufficient range of motion to produce movement of synovial fluid within the synovial cavity. Joint manipulation techniques are thought to produce movement of fluid within the synovium.

Pain Control/Muscle Relaxation

Manipulation decreases pain in joint and periarticular structures by stimulating joint recetors. This reduces pain perception by producing blockage of pain impulses through the gate control mechanism and by producing reflexive muscle relaxation. Pain can also be decreased by relieving accompanying mechanical or reflex irritation of nerve roots and in certain conditions temporarily, by decreasing the compressive forces on the joint. This is accomplished when techniques designed to distract the two joint. This is accomplished when techniques designed to distract the tow joint surfaces are used.

Meniscold Impingement

An intracapsular meniscold structure has been shown to exist within the facet joints of the spine. This structure can become caught between the two facet joint surfaces, causing locking of the two joint surfaces accompanied by pain. Joint manipulation techniques, particularly procedures restore normal motion to the vertebrae affected.

Reduction of Disc Herniation

Spinal disc herniations, protrusions or bulges can be treated by spinal manipulation, especially with thrust manipulation techniques. It has been hypothesized that during spinal manipulation sufficient negative pressure is created in the space between the vertebral bodies to draw the disc material back into the inververtebral space.

Psychologic Benefits

One must not discount the psychologic benefit to a patient of a treatment composed of techniques requiring touch. This is especially true in a medical system in which few practitioners remain who heal by the laying on of hands.

Sunbury Chiropractor | Chiropractic Adjustment. Dr. Michael A. Phillips, D.C. is a Sunbury Chiropractor.