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The most common types of repetitive strain injuries are tendinitis and bursitis.

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Bursitis relates to inflammatory lesions of soft tissue.  Inflammation may occur in a normally situated bursa or in an adventitious bursa.  It can arise from mechanical irritation.  This is caused by excessive pressure or friction.  There is a mild inflammatory reaction in the wall of the bursa, and there is usually an effusion of clear fluid within the sac.  In many cases the inflammation subsides with rest if continued pressure or friction is prevented.  In resistant cases cure can be affected only by operative excision of the bursa.

A tendon is a white fibrous tissue that connects muscle to bone and allows for movement at all joints throughout the body. Bursae are small pouches or sacs that are found over areas where friction may develop; bursitis is inflammation of a bursa sac.

Diseases of the Bursae include:

  • Acute suppurative bursitis
  • Acute non-supprative bursitis
  • Injuries to bursae, for example, haematoma
  • Simple chronic bursitis – prepatellar
  • Simple chronic bursitis – other than prepatellar
  • Semimembranosus bursa
  • Gummatous bursitis
  • Tuberculous bursitis

Common Diseases of joints from RSI include:

  • Sprains of spine, sacro-iliac & lumbo-sacral joints
  • Traumatic synovitis shoulder - strains, sprains, contusions
  • Traumatic synovitis elbow – strains, sprains, contusions
  • Sprained wrist – traumatic synovitis
    Sprained synovitis of hip – sprains, strains, contusions
    Traumatic synovitis of knee – haemathrosis, rupture of collateral ligaments, rupture of cruciate ligaments
    Sprained ankle – traumatic synovitis
    Rupture of ext/ lat ligaments (subluxation of talus and ligaments of ankle)

Internal Derangements, loose bodies, etc resulting from RSI include:

  • Injuries to semi-lunar cartilage knees
  • Cysts of semi-lunar cartilage knees
  • Loose bodies of knee, including Osteochondritis Dissecans
  • Discoid cartilage
  • Other internal derangements of the knee
  • Loose bodies in the Elbow, including Osteochondritis Dissecans
  • Loose bodies in joints other than knee and elbow

Miscellaneous disorders due to RSI:

  • Sciatica due to retropulsed discs
  • Sciatica due to other causes
  • Backache due to degenerate discs
  • Backache no cause found
  • Coccydynia
  • Clicking or snapping hip
  • Clicking or snapping shoulder and scapula
  • Clicking or snapping other joints
  • Ankylosis of joints
  • Functional affection of joints (Neurosis)