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Cricket Injuries Pt 4 (Serratus posterior inferior)

photo of serratus posterior inferior muscle

The serratus posterior inferior muscle connects the lower 4 ribs to four vertebrae (T11, T12, L1, L2) in the low back. In cricket injuries to this muscle will occur when:

  • Pain in the low back when stretching to reach overhead
  • Pain in the low back when twisting at the waist
  • Pain in the low back when bending over
  Serratus posterior inferior muscle controls various movements i.e.
  • Forced expiration (breathing out when breathing hard)
  • Assisting with twisting at the waist (biomechanics = transverse plane)
  • Assists with straightening the trunk i.e. standing up straight

Serratus posterior inferior pain and symptoms occurs when:

  • Twisting the body when lifting
  • Overreaching overhead or to the side of the body
  • Lifting something heavy using the back muscles instead of leg muscles
  • Sleeping on a sagging or too soft mattress
  • You stretch too far when trying to reach something overhead leading to cramping within the muscle and side of the body
  • If the serratus muscles are tight, they can contribute to difficulty in breathing
In sport for example, you use the serratus posterior inferior muscle when you straighten the back, twist at the waist and exhale, this will occur in cricket, golf, football, high jump etc; pretty much any sport.

There are signs which aid in the clinical diagnosis of serratus posterior inferior muscle as well as testing for a differential diagnostic point of view,  symptoms which may contribute are:

  • Rib Subluxation/Dislocation
  • Slipping rib syndrome
  • Costochondritis
  • Sprain/Strain syndrome of the mid-back
  • Thoracic Spine Hyperkyphosis
  • T10 T11 or T12 radiculopathy
  • Scoliosis
  • Kidney Stones
  • Kidney Infection
  • Ankylosing Spondylitis

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