Kinetic Chain Dysfunction
COMMON KINETIC DYSFUNCTIONS
There are three common kinetic chain dysfunctions you must be aware of to treat a patient effectively. These include the Lower Crossed Syndrome, Upper Crossed Syndrome, Pronation Distortion Syndrome.
LOWER CROSSED SYNDROME
A patient with lower crossed syndrome shows increased lumbar lordosis and an anterior pelvic tilt. There are muscles that are too tight and others that are too weak. The muscles that are too tight include gastrocnemius, soleus, hamstring complex, adductor complex, hip flexor complex (psoas, rectus femoris, tensor fascia latae), and the erector spinae. The muscles that are commonly weak or inhibited include posterior tibialis, anterior tibialis, gluteus maximus, gluteus medius, transverse abdominus, internal oblique, multifidus, and deep erector spinae. This pattern of tightness and weakness causes predictable patterns of joint dysfunctions, movement imbalances, and injury patterns.
Joint dysfunctions include:
• Subtalar joint • Proximal tibio-fibular joint
• Tibio-femoral joint • Iliofemoral joint
• Iliosacral joint • Sacroiliac joint
• Lumbar facet joint
Common movement dysfunctions include decreased stabilization of the lumbar spine characterized by excessive lumbar lordosis. This is caused by tightness in the hip flexors and lumbar extensors as well as weakness in the lower abdominals and lumbar stabilizers. Common injuries include hamstring strains, anterior knee pain, low back pain, sacroiliac pain, and hip pain.
Dr. Perry Nickelston, DC
1-866-595-7749 Ext. 102

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