Orthopedics Book


  • Sacroiliac Dysfunction



Traumatic Injury


Sacroiliac Dysfunction

Aka: Sacroiliac Dysfunction, Sacroiliac Joint Dysfunction, SI Joint Dysfunction, Sacroiliitis, Sacroiliac instability, Sacroiliac Ligament Sprain
  1. See Also
    1. Low Back Pain
    2. Ankylosing Spondylitis
  2. Pathophysiology
    1. Bony Pelvis is tightly bonded at 3 joints (2 SI joints and Symphysis Pubis)
    2. Injury or inflammation of the joint formed between the Sacrum and the ilium
    3. Anterior and posterior ligaments supporting the SI joint tend to allow minimal laxity normally
  3. Symptoms
    1. Low Back Pain localized to the SI joint
    2. Pain may be referred into the leg
  4. Signs
    1. Focal tenderness over the SI Joint
    2. One Legged Hyperextension Test
    3. Figure of Four Test (Patrick's Sign, FABER Test)
    4. Functional Leg Length Discrepancy
  5. Differential Diagnosis
    1. Lumbar Disc Disease
    2. Musculoskeletal Low Back Pain
    3. Septic Sacroiliitis (emergency)
      1. Presents with fever, limp and SI joint region pain
      2. Most common in children 0.5 to 4 years old and in adolescents
    4. Spondyloarthropathy causing Sacroiliitis
      1. Ankylosing Spondylitis
      2. Reactive Arthritis (e.g. Reiter's Syndrome)
      3. Inflammatory Bowel Disease with secondary Arthropathy
      4. Psoriatic Arthritis
  6. Imaging
    1. Normal in most cases (unless underlying Spondyloarthropathy)
  7. Management
    1. Physical therapy with mobilization techniques
    2. NSAIDs
    3. Consider SI Joint Corticosteroid Injection in refractory cases
  8. References
    1. Madden (2010) Netter's Sports Medicine, Elsevier, Philadelphia, 402-3

Sacroiliac instability (C0263904)

Concepts Pathologic Function (T046)
SnomedCT 29885006
English Instability of sacroiliac joint, Sacroiliac instability, Sacroiliac joint unstable, Sacroiliac instability (disorder), instability; joint, sacroiliac, instability; sacroiliac, joint; instability, sacroiliac, sacroiliac; instability
Dutch gewricht; instabiliteit, sacro-iliacaal, instabiliteit; gewricht, sacro-iliacaal, instabiliteit; sacro-iliacaal, sacro-iliacaal; instabiliteit
Spanish articulación sacroilíaca inestable, inestabilidad de la articulación sacroilíaca (trastorno), inestabilidad de la articulación sacroilíaca, inestabilidad sacroilíaca
Derived from the NIH UMLS (Unified Medical Language System)

Sprain of sacroiliac ligament (C0434473)

Concepts Injury or Poisoning (T037)
ICD9 846.1
ICD10 S33.6
SnomedCT 157309002, 262997006, 209555002, 12519004
English Sacroiliac (ligament) sprain, SIJ - Sprn lig sacro-iliac jt, Sacroiliac sprain NOS, Sprain lig sacroiliac joint, SIJ - Sprain sacroiliac joint, sprain of sacroiliac ligament, sprained sacroiliac ligament, sprain of sacroiliac ligament (diagnosis), Sprain sacroiliac, sacroiliac joint sprain, sacroiliac sprained, sprain sacroiliac, Sprain;sacroiliac, sacroiliac sprain, joint sacroiliac sprains, sacroiliac ligament sprain, Sprain of sacroiliac joint (disorder), Sacroiliac sprain NOS (disorder), Sprain of sacroiliac ligament, SIJ - Sprain of ligament of sacroiliac joint, Sprain of ligament of sacroiliac joint, SIJ - Sprain of sacroiliac joint, Sprain of sacroiliac joint, Sacroiliac sprain, Sprain of sacroiliac ligament (disorder), Sacroiliac ligament sprain
Dutch sacro-iliacale verstuiking, sacro-iliacale (ligament)verstuiking
French Entorse (ligament) sacro-iliaque, Entorse sacro-iliaque
German sakroiliakale Verstauchung, sakroiliakale (Band) Verstauchung
Italian Distorsione e distrazione legamento sacroiliaco, Distorsione sacro-iliaca
Portuguese Entorse sacroilíaca (ligamento), Entorse sacroilíaca
Spanish Esguince sacroilíaco, Esguince (ligamentoso) sacroiliaco, estrema del ligamento sacroilíaco, esguince de ligamento sacroilíaco (trastorno), esguince del ligamento sacroilíaco (trastorno), esguince del ligamento sacroilíaco, esguince de ligamento sacroilíaco, esguince sacroilíaco, SAI, esguince sacroilíaco, SAI (trastorno)
Japanese 仙腸(靱帯)捻挫, 仙腸関節捻挫, センチョウジンタイネンザ, センチョウカンセツネンザ
Czech Podvrtnutí vazu sakroiliakálního, Blok sakroiliakálního skloubení
Hungarian Sacroiliacalis (szalag) húzódás, Sacroiliacalis húzódás
Derived from the NIH UMLS (Unified Medical Language System)

Sacroiliitis (C0574960)

Definition (MSH) Inflammation of the SACROILIAC JOINT. It is characterized by lower back pain, especially upon walking, fever, UVEITIS; PSORIASIS; and decreased range of motion. Many factors are associated with and cause sacroiliitis including infection; injury to spine, lower back, and pelvis; DEGENERATIVE ARTHRITIS; and pregnancy.
Concepts Disease or Syndrome (T047)
MSH D058566
SnomedCT 55146009, 156620004, 274136001
Italian Sacro-ileite, Sacroileite
Japanese 仙腸骨炎, センチョウコツエン
English sacroiliitis, sacroiliitis (diagnosis), Sacroiliitis, Sacroiliitides, inflammation of sacroiliac joint, sacroiliac inflammation, sacroileitis, inflammation joint sacroiliac, sacroiliac joint inflammation, inflammation sacroiliac, Sacroiliitis [Disease/Finding], Sacroiliitis (disorder), Sacroiliac joint arthritis, Sacroiliac joint active, Sacroiliac joint inflamed, Inflammation of sacroiliac joint, Sacroiliac joint inflamed (disorder), inflammation; joint, sacroiliac, joint; inflammation, sacroiliac, Inflammation of sacroiliac joint, NOS, Sacroiliitis, NOS, Inflammation of sacroiliac joint NOS
Czech Sakroileitida, sakroiliitida
French Arthrite sacro-iliaque, Sacro-iliite, Sacroiliite
German Sakroiliitis, Sacroiliitis
Spanish Sacroileitis, articulación sacroilíaca inflamada, inflamación de la articulación sacroilíaca (trastorno), inflamación de la articulación sacroilíaca, sacroilitis (trastorno), sacroilitis, Sacroileítis
Portuguese Sacroileíte, Sacroiliite
Hungarian Sacroileitis
Polish Zapalenie stawu krzyżowo-biodrowego, Zapalenie stawów krzyżowo-biodrowych
Norwegian Sakroiliitt, Iliosacralleddsbetennelse, Bekkenleddsbetennelse
Dutch gewricht; ontsteking, sacro-iliacaal, ontsteking; gewricht, sacro-iliacaal, sacro-iliïtis
Derived from the NIH UMLS (Unified Medical Language System)

Sacroiliac joint somatic dysfunction (C3472667)

Concepts Disease or Syndrome (T047)
SnomedCT 471000119102
English Sacroiliac joint somatic dysfunction, Sacroiliac joint somatic dysfunction (finding)
Spanish disfunción somática de articulación sacroilíaca, disfunción somática de articulación sacroilíaca (hallazgo)
Derived from the NIH UMLS (Unified Medical Language System)

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