Effect of Orthopedic Blocking on Cervical Spine Flexion and Extension Strength

Study Overview
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Brief Summary
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A few studies concerning the effects of joint manipulation have shown muscle responses distal to the site of manipulation. The purpose of this study is to determine if pelvic orthopedic blocking, a low force method of manipulating the sacroiliac joint, can have produce changes to cervical spine function.

Detailed Description
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All mechanoreceptor types are found in diarthrodial joints. Mechanoreceptor afferents have reflexive connections to motor neurons. Stimulation of muscle and joint afferents are known to produce reflexive muscle changes. Orthopedic blocking applies a gentle compression to the sacroiliac joints. The current study seeks to determine if orthopedic blocking of the sacroiliac joint can affect cervical spine function thereby serving as a useful adjunctive procedure in the treatment of cervical spine joint dysfunction. The current study will compare pre & post treatment cervical isometric strength readings from an orthopedic blocking group, a trochanter belt group (another type of compression), and a sham group.

Official Title
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Effect of Orthopedic Blocking on Cervical Spine Flexion and Extension Strength

Conditions
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Sacroiliac Function

Intervention / Treatment
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* Procedure: Orthopedic Blocking
* Procedure: Trochanter Belt
* Other: Blocking Sham


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Logan faculty, students, or staff 18-30 years of age with a leg-length inequality of 5mm or more. Exclusion Criteria: Fractures Tumors Myopathies Consumption of prescription drugs that affect nervous system function Recent cervical spine injuries or surgeries Cervical pain

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Treatment<br>Place the blocks under the pelvis for 2 minutes | Procedure: Orthopedic Blocking<br>* Place the blocks under the pelvis for 2 minutes<br>|
| Active Comparator: Trochanter Belt<br>Participant is fitted with trochanter belt on the adjusting table and wear it while Investigator checks their flexion and extension strength. | Procedure: Trochanter Belt<br>* Participant is fitted with trochanter belt on the adjusting table and wear it while Investigator checks their flexion and extension strength.<br>|
| Sham Comparator: Sham<br>Participant lies on adjusting table, blocks are placed in a similar configuration but distant to actual points of leverage. | Other: Blocking Sham<br>* Participant lies on adjusting table, blocks are placed in a similar configuration but distant to actual points of leverage.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Cervical Isometric Strength |  | Pre and post treatment |