I. Definitions

  1. Apophysis
    1. Secondary ossification sites for tendon insertions
  2. Apophysitis
    1. Apophyseal inflammation prior to growth plate closure

II. Pathophysiology

  1. Bone grows faster than muscle and tendon during growth spurt in adolescents
  2. Results in a physiologic inflexibility at the apophyses

III. Epidemiology

  1. Apophysitis is seen most commonly in young athletes
  2. Pelvis is the most common site of Apophyseal Fracture

IV. Causes: Sites of Apophyseal Injury: General

V. Causes: Sites of Apophyseal Injury: Pelvis

  1. Anterior Superior Iliac Spine
    1. Sartorius tendon insertion
  2. Anterior Iliac Spine
    1. Rectus Femoris tendon insertion
  3. Ischial tuberosity
    1. Hamstring tendon insertion
  4. Iliac Crest
    1. Transverse abdominis insertion
    2. External oblique insertion
    3. Internal oblique tendon insertion

Images: Related links to external sites (from Google)

Ontology: Apophysitis (C0264110)

Concepts Disease or Syndrome (T047)
ICD10 M93.9
SnomedCT 203422003, 29321007, 156822009, 268125000
English Apophysitis, NOS, Apophysitis NOS, Apophysitis NOS (disorder), Apophysitis, Apophysitis (disorder), apophysitis, Apophysitis not specified as adult or juvenile, of unspecified site
Spanish Apophysitis NOS, apofisitis (trastorno), apofisitis, SAI (trastorno), apofisitis, SAI, apofisitis