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Biomedical subjects

R L DonTigny

Publications and source records attributed to R L DonTigny.

9 recordsLinked to original sources
PubMed1990

Anterior dysfunction of the sacroiliac joint as a major factor in the etiology of idiopathic low back pain syndrome.

The purpose of this article is to describe the author's theories as to how anterior dysfunction of the sacroiliac joints (SIJs) is a major factor in the etiology of idiopathic low back pain syndrome (ILBPS). Most research and treatment have been directed toward the intervertebral disk; however, it is unlikely that disk dysfunction is always the primary etiology. A review of the literature is used to outline and describe the characteristics of ILBPS and to make a case that these characteristics are consistent with those of a specific dysfunction of the SIJs. Functions of the intervertebral disks and the SIJs are described and related to SIJ dysfunction and to some of its common consequences. Treatment is discussed as it relates to the pathomechanics and their correction.

Back Pain↗
PubMed1985

Function and pathomechanics of the sacroiliac joint. A review.

The purpose of this article is to describe the biomechanics and function of the sacroiliac joint, the dysfunction and pathomechanics of the sacroiliac joint as a common cause of low back pain, a simple assessment procedure, associated pain mechanisms, treatment and prevention of the problem, and a discussion of related literature. The sacroiliac joints are essentially nonweight-bearing joints that function to absorb forces from various directions. The common onset of dysfunction is during trunk flexion when a person is standing without adequate support of the anterior pelvis. The anterior shift of the weight of the upper trunk causes the innominates to rotate anteriorly and downward and become fixed on the sacrum. Movement downward of the acetabula in relationship to the sacroiliac joint not only results in biomechanical changes but causes the legs to appear longer than they actually are. Physical therapists can correct the dysfunction by manually rotating the innominates posteriorly on the sacrum while they observe objective changes in apparent leg length. People can prevent this dysfunction through adequate anterior pelvic support when they lean forward. Some possible consequences of untreated sacroiliac dysfunction are also discussed.

Abdomen↗
PubMed1985

Pelvic tilt. Intratester reliability of measuring the standing position and range of motion.

The purpose of this study was to examine intratester reliability of a test designed to measure the standing pelvic-tilt angle, active posterior and anterior pelvic-tilt angles and ranges of motion, and the total pelvic-tilt range of motion (ROM). After an instruction session, the pelvic-tilt angles of the right side of 20 men were calculated using trigonometric functions. Ranges of motion were determined from the pelvic-tilt angles. Intratester reliability coefficients (Pearson r) for test and retest measurements were .88 for the standing pelvic-tilt angle, .88 for the posterior pelvic-tilt angle, .92 for the anterior pelvic-tilt angle, .62 for the posterior pelvic-tilt ROM, .92 for the anterior pelvic-tilt ROM, and .87 for the total ROM. We discuss the factors that may have influenced the reliability of the measurements and the clinical implications and limitations of the test. We suggest additional research to examine intratester reliability of measuring the posterior pelvic-tilt ROM, intertester reliability of measuring all angles and ROM, and the pelvic tilt of many types of subjects.

Adult↗
PubMed1985

Nuclear shifting.

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Biomechanical Phenomena↗