Strain/Sprain Is One Syndrome
FEATURE
1. Not Two Separate Pathologies / 2. And Is Permanent
Mark Studin
DC, FASBE(C), DAAPM, DAAMLP and William J. Owens, DC, DAAMLP
According to the National Institute of Health’s National Institute of Arthritis and Musculoskeletal and Skin Disorders:
A sprain is an injury to a ligament (tissue that connects two or more bones at a joint). In a sprain, one or more ligaments is stretched or torn. A strain is an injury to a muscle or a tendon (tissue that connects muscle to bone). In a strain, a muscle or tendon is stretched or torn. (https://www.niams.nih.gov/health_info/sprains_strains/ sprains_and_strains_ff. asp)
Historically, doctors of all disciplines in the clinical setting and lawyers in the medical-legal arena have erroneously attempted to separate them into two distinct injuries. By doing so, it allows a false conclusion to be derived in either a prognosis or legal arguments when considering connective tissue pathology as sequela to trauma.
Solomonow (2009) wrote:
There are several ligaments in every joint in the human skeleton and they are considered as the primary restraints of the bones constituting the joint. Ligaments are also sensory organs and have significant input to sensation and reflexive/synergistic activation of muscles. The muscles associated with any given joint, therefore, also have a significant role as restraints. In some joints, such as the intervertebral joints of the spine, the role of the muscles as restraints is amplified. The role of ligaments as joint restraints is rather complex when considering the multitude of physical activities performed by individuals in routine daily functions, work, and sports, the complexity of the anatomy of the different joints and the wide range of magnitude and velocity of the external loads. As joints go through their range of motion, with or without external
“By doing so, it allows a false conclusion to be derived in either a prognosis or legal arguments when considering connective tissue pathology as sequela to trauma. J J
load, the ligaments ensure that the bones associated with the joint travel in their prescribed anatomical tracks, keep full and even contact pressure of the articular surfaces, prevent separation of the bones from each other by increasing their tension, as may be necessary, and ensuring stable motion. Joint stability, therefore, is the general role of ligaments without which the joint may subluxate, cause damage to the capsule, cartilage, tendons, nearby nerves and bloodvessels, discs (if considering spinal joints), and to the ligaments themselves. Such injury may debilitate the individual by preventing or limiting his/her use of the joint and the loss of function, (pp. 136-137)
While ligaments are primarily known as mechanical or supportive structures responsible for joint stability, they have equally important neurological functions. Anatomical studies have shown that ligaments in the extremities and the spine are endowed with nerves called mechanoreceptors. The presence of such that sense and send neurological information to the spine and brain in the ligaments confirms that they contribute to proprioception (feeling and analyzes one’s physical position in space and time) and kinesthesia (similar to proprioception but can maintain feeling in these nerves even with aberrant neurological input elsewhere), and also has a distinct role in reflex activation or inhibition of muscular activities.
Simply put, the nerves in ligaments attempt to alter muscle activity to prevent further biomechanical failure and pathology (bodily injury), which affects one’s ability to move in a balanced homeostatic manner, leading to further functional loss in a short amount of time. The presence of such nerves in the ligaments confirms that they contribute to proprioception and kinesthesia, and have a distinct role in reflex activation or inhibition of muscular activities. Therefore, the muscles and tendons, which are inherent in muscular activity, are responsive and dependent upon ligament activity in function with both normal and pathological (inclusive of trauma) activities.
Solomonow (2009) also reported that, as far back as the turn of the last century, a reflex may exist from sensory receptors in the ligaments to muscles that may directly or indirectly modify the load imposed on the ligament. A clear demonstration of a reflex activation of muscles finally was provided in 1987 and reconfirmed several times since then, ft was further shown that such a ligamento-muscular reflex exists in most extremity joints and in the spine.
A single trauma, according to Panjabi (2006), can cause either a teai' in the ligament called laxity or a subfailure injury of the spinal ligaments and injury to the mechanoreceptors embedded in the ligaments and the following cascade of events occur (pp. 669-670).
Note: The subfailure injury of the spinal ligament is defined
as an injury caused by the stretching of tissue beyond its physiological limit, but less than its failure point.
■ ■ While ligaments are primarily known as mechanical or supportive structures responsible for joint stability, they have equally important neurological functions.
1. When the injured spine performs a task or it is challenged by an external load, the transducer signals generated by the mechanoreceptors are corrupted.
2. Neuromuscular control unit has difficulty in interpreting the corrupted transducer signals because there is spatial and temporal mismatch between the normally expected and the corrupted signals received.
3. The muscle response pattern generated by the neuromuscular control unit is corrupted, affecting the spatial and temporal coordination and activation of each spinal muscle.
4. The corrupted muscle response pattern leads to corrupted feedback to the control unit via tendon organs of muscles and injured mechanoreceptors, further corrupting the muscle response pattern.
5. The corrupted muscle response pattern produces high
stresses and strains in spinal components leading to further subfailure injury of the spinal ligaments, mechanoreceptors, and muscles, and overload of facet joints.
6. The abnormal stresses and strains produce inflammation of spinal tissues, which have abundant supply of nociceptive sensors and neural structures.
7. Consequently, over time, chr onic biomechanical failure develops leading to premature degeneration and longterm pain.
Simply explained, when there is a ligament injury or sprain, the nerves in the ligament fire signals that go to the central nervous system and cause the muscles to react as compensation to bodily injury to stabilize the structure. That in turn sets up another cascade of problems if not compensated for or repaired as the muscle spasticity cannot maintain itself for long periods of time and goes into a posture of tetanus, or perpetual spasm until the lactic acid builds. This is followed by the muscle failing and putting die entire structure in a chronic biomechanically unstable position and causing the bone to remodel or become arthritic.
According to Hauser et al. (2013), ligament instability in either subfailures or laxity are a clear cause of osteoarthritis. This is not speculative as the injured will develop arthritis 100% of the time and is consistent with Wolff’s law that has been, and continues to be, accepted since the late eighteenth century.
Therefore, as per the previous scenario, strain-sprain is an
intertwined syndrome that cannot either mechanically or neurologically be separated and will cause arthritis in 100% of the post-trauma instance. How much arthritis and how quickly it will develop is dependent upon the amount of ligamentous damage.
^Simply explained, when there is a ligament injury or sprain, the nerves in the ligament fire signals that go to the central nervous system and cause the muscles to react as compensation to bodily injury to stabilize the structure. J J
References:
1. What are sprains and strains? National Institute of Health, National Institute of Arthritis and Musculoskeletal and Skin Disorders (2016) Retrieved from: (https:/ www.niams.nih.gov health info/sprains strains/sprains and strainsJf.asp)
2. Solomonow, M. (2009). Ligaments: A source of musculoskeletal disorders. Journal of Bodywork and Movement Therapies, 13(2), 136-154.
Panjabi, M. M. (2006). A hypothesis of chronic back pain:
3. Ligament subfailure injuries lead to muscle control dysfunction. European Spine Journal, 15(5), 668-676.
4. Hauser R, Dolan E., Phillips H., Newlin A., Moore R., Woldin B. Ligament and healing injuries: A review of current clinical diagnostics and therapeutics. The Open Rehabilitation Journal, 2013, 6, 1-20.
Dr. Mark Studin is an adjunct associate professor of chiropractic at the University of Bridgeport College of Chiropractic; an adjunct professor of clinical sciences at Texas Chiropractic College; and a clinical presenter for the State of New York at Buffalo, School of Medicine and Biomedical Sciences for postdoctoral education, teaching MRI spine interpretation, spinal biomechanical
engineering, and triaging trauma cases. He also coordinates a clinical rotation in neuroradiology for chiropractic students at the State University of New York at Stony Brook, School of Medicine, Department of Radiology. Dr Studin is also the president of the Academy of Chiropractic teaching doctors of chiropractic how to interface with the medical and legal communities (www.DoctorsPIProgram.com); teaches MRI interpretation and triaging trauma cases to doctors of all disciplines nationally; and studies trends in health care on a national scale (www.TeachDoctors.com). He can be reached at DrMark a Academyofi 'hiropractic.com or at 631-786-4253.
Dr Bill Owens is presently in private practice in Buffalo and Rochester, New York and generates the majority of his new patient referrals directly from the primary care medical community. He is an associate adjunct professor at the State University of New York at Buffalo School of Medicine and Biomedical Sciences
as well as the University of Bridgeport, College of Chiropractic, and an adjunct professor of clinical sciences at Texas Chiropractic College. He also works directly with doctors of chiropractic to help them build relationships with medical providers in their community. He can be reached at dr.owens(Jf academy of chiropractic.com or at 716-228-3847, or by visitingwww.mdreferralprogram.com.
