Microtrauma

Not to be confused with Microaggression.

Microtrauma is any of many possible small injuries to the body.[1]

Muscle fibres may be "microtorn" during microtrauma.

Microtrauma can include the microtearing of muscle fibres, the sheath around the muscle and the connective tissue. It can also include stress to the tendons, and to the bones (see Wolff's law). It is unknown whether or not the ligaments adapt like this. Microtrauma to the skin (compression, impact, abrasion) can also cause increases in a skin's thickness, as seen from the calluses formed from running barefoot or the hand calluses that result from rock climbing. This might be due to increased skin cell replication at sites under stress where cells rapidly slough off or undergo compression or abrasion.

Most microtrauma cause a low level of inflammation that cannot be seen or felt. These injuries can arise in muscle, ligament, vertebrae, and discs, either singly or in combination. Repetitive microtrauma which are not allowed time to heal can result in the development of more serious conditions.

Negative effects

Back pain can develop gradually as a result of microtrauma brought about by repetitive activity over time. Because of the slow and progressive onset of this internal injury, the condition is often ignored until the symptoms become acute, often resulting in disabling injury. Acute back injuries can arise from stressful lifting techniques done without adequate recovery, especially when experimenting with more ballistic work, or work where the extensor spinae are stressed during spinal flexion when much of the load is commonly taken up by the slower to heal ligaments which may not adapt progressively to the stress. While the acute injury may seem to be caused by a single well-defined incident, it may have been preventable or lessened if not for the years of injury to the musculoskeletal support mechanism by repetitive microtrauma.

Positive effects

Main article: Muscle hypertrophy

After microtrauma from stress (such as lifting weights) to muscles, they can be rebuilt and overcompensate to reduce the likeliness of re-injury.

See also

References

  1. ^ Thomas, Clayton L., M.D., M.P.H. (1993). Taber's Cyclopedic Medical Dictionary, Edition 18. F.A. Davis. p. 1212. ISBN 0-8036-0194-8.{{cite book}}: CS1 maint: multiple names: authors list (link)

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