Anterior inferior iliac spine avulsion injury
Last revised by Lam Van Le
on 26 Nov 2024
Citation, DOI, disclosures and article data
Citation:
Mous A, Le L, Ranchod A, et al. Anterior inferior iliac spine avulsion injury. Reference article, Radiopaedia.org (Accessed on 10 Dec 2024) https://doi.org/10.53347/rID-909
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rID:
909
Article created:
2 May 2008,
Anon Ny Mous
Disclosures:
At the time the article was created Anon Ny Mous had no recorded disclosures.
View Anon Ny Mous's current disclosures
Last revised:
26 Nov 2024,
Lam Van Le
Disclosures:
At the time the article was last revised Lam Van Le had no financial relationships to ineligible companies to disclose.
View Lam Van Le's current disclosures
Revisions:
27 times, by
17 contributors -
see full revision history and disclosures
Systems:
Tags:
Synonyms:
- AIIS injury
- AIIS avulsion injury
- AIIS avulsion
- AIIS avulsion fracture
- Anterior inferior iliac spine avulsion fracture
- Anterior inferior iliac spine avulsion
Anterior inferior iliac spine (AIIS) avulsion injuries are one of the six main types of pelvic apophyseal avulsion fractures. Subacute or chronic avulsion injuries can be mistaken for a pseudotumour.
On this page:
Epidemiology
As with many pelvic avulsion injuries, they most often occur in adolescents (mostly between the ages of 14-17). There is a slight male predilection and they tend to occur most often in sports involving kicking.
Pathology
The straight head of the rectus femoris muscle originates from the AIIS and forceful extension at the hip joint can lead to an avulsion injury at this point. The mechanism is one of forced hip extension with the knee in flexion 4.
Radiographic features
Plain radiograph
The avulsed bony fragment may not be as obvious on the AP projection. An oblique projection can be utilised to demonstrate the fragment in profile.
Treatment and prognosis
Almost all cases are managed conservatively.
Differential diagnosis
myositis ossificans of straight head of rectus femoris muscle
Quiz questions
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References
- 1. Stevens M, El-Khoury G, Kathol M, Brandser E, Chow S. Imaging Features of Avulsion Injuries. Radiographics. 1999;19(3):655-72. doi:10.1148/radiographics.19.3.g99ma05655 - Pubmed
- 2. Serbest S, Tosun HB, Tiftikçi U et-al. Anterior inferior iliac spine avulsion fracture: a series of 5 cases. Medicine (Baltimore). 2015;94 (7): e562. doi:10.1097/MD.0000000000000562 - Free text at pubmed - Pubmed citation
- 3. Yildiz C, Aydin T, Yildiz Y, Kalyon T, Basbozkurt M. Anterior Inferior Iliac Spine Apophyseal Avulsion Fracture. J South Orthop Assoc. 2003;12(1):38-40. - Pubmed
- 4. Narayanasamy S, Krishna S, Sathiadoss P, Althobaity W, Koujok K, Sheikh A. Radiographic Review of Avulsion Fractures RadioGraphics Fundamentals | Online Presentation. Radiographics. 2018;38(5):1496-7. doi:10.1148/rg.2018180064 - Pubmed
- 5. Milankov M, Harhaji V, Gojković Z, Drapsin M. Heterotopic Ossification Following Surgical Treatment of Avulsion Fracture of the Anterior Inferior Iliac Spine. Med Pregl. 2011;64(11-12):593-6. doi:10.2298/mpns1112593m - Pubmed
Incoming Links
Articles:
- Anterior inferior iliac spine
- AO/OTA classification of pelvic ring fractures
- Rectus femoris muscle injury
- Rectus femoris muscle
- Quadriceps injury
- Apophyseal avulsion fractures of the pelvis and hip
- Groin pain
- Paediatric curriculum
- Avulsion injury
- Pelvic digit
- Osteochondroma
- Lower extremity fractures
- Rectus femoris heterotopic ossification
Cases:
- Anterior inferior iliac spine avulsion injury
- Anterior inferior iliac spine (AIIS) avulsion injury
- Proximal rectus femoris tendon tear
- Anterior inferior iliac spine avulsion injury
- Rectus femoris heterotopic ossification
- Anterior inferior iliac spine avulsion injury
- Anterior inferior iliac spine (AIIS) avulsion injury
- Anterior inferior iliac spine avulsion injury
- Anterior inferior iliac spine avulsion fracture
- Anterior inferior iliac spine avulsion fracture
- Anterior inferior iliac spine avulsion fracture - subacute
- Anterior inferior iliac spine avulsion fracture
- Anterior inferior iliac spine avulsion injury
- Straight and reflected head rectus femoris avulsion fractures
- Anterior inferior iliac spine avulsion fracture
- Anterior inferior iliac spine avulsion fracture
- Anterior inferior iliac spine avulsion fracture
- Rectus femoris origin ossification
Multiple choice questions:
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