Asetabulum arka kolon kırığı

Özet

Arka kolon kırığı asetabulumun posterior kolonunu tutar; ilioiskial çizgi posterior kolon tutulumunu değerlendirmede kullanılan anatomik işaretlerden biridir. Travmalı hastada BT, kırık morfolojisini tanımlayarak kolon tutulumunu ve eklem içi fragmanları değerlendirmeye ve cerrahi planlamaya yardımcı olur. İlioiskial çizgi posterior kolon tutulumunu, posterior duvar fragmanının varlığı ise eşlik eden duvar bileşenini değerlendirmede kullanılan anatomik ipuçlarıdır. Asetabular kırıkların sınıflandırılmasında çok düzlemli ve üç boyutlu BT rekonstrüksiyonları ek olarak önerilir.

Faz ve pencere

Kontrastsız tanısal

Aksiyel ince kesitlerde posterior kolondan medial-lateral yönde geçen kortikal kırık hattı ve fragman yer değiştirmesi seçilir; koronal-sagittal kemik rekonstrüksiyonları hattın büyük siyatik çentikten çatıya, quadrilateral yüz ve obturator halkaya devamını gösterir. BT'de kırık morfolojisi, kolon tutulumu ve eklem içi fragmanlar değerlendirilir.

BT bulguları

• Çatı ilişkisi — posterior kolon tutulumunu ilioiskial çizgiyle değerlendirin; asetabular kırıkların sınıflandırılması için çok düzlemli BT ve 3B rekonstrüksiyonları inceleyin.
• İlioiskial çizgi karşılığı — ilioiskial çizginin değerlendirilmesi posterior kolon tutulumunu belirlemeye yardımcı olur.
• Kolon fragmanı — eşlik eden kırıklara rağmen posterior kolon kırığı yer değiştirmemiş olabilir.
• Arka duvar bileşeni — eklem seviyesinde ayrı posterior rim fragmanları aranır; kolon hattı ile duvar kırığı birlikteyse ilişkili örüntüdür.
• Femur başı subluksasyonu veya çıkığı — femur başının asetabuluma göre konumu ve olası yer değiştirmesi değerlendirilir.
• Pelvik yumuşak dokular — travma BT'sinde nadir de olsa gluteal kompartman hematomu görülebilir.
• Judet–Letournel sınıflamasında posterior kolon ve posterior duvar bileşenleri değerlendirilir; ikisi birlikte de bulunabilir.

Ölçütler ve sınıflamalar

Judet–Letournel temel kırık örüntüleri

Judet–Letournel sınıflamasında posterior kolon tutulumu ve posterior duvar fragmanının varlığı ayrı bileşenler olarak değerlendirilir. Arka duvar kırığı eklenirse posterior column–posterior wall ilişkili örüntüsü olarak tanımlanır.

AO/OTA asetabulum 62A2

AO sınıflamasında posterior kolon asetabulum kırığı 62A2.2 olarak kodlanır.

Normalde

İlioiskial çizgi, radyografik çizgi analizinde posterior kolon tutulumunu değerlendirmeye yardımcı olur. Karşılaştırmada yalnız arka eklem kenarını değil, çentik-çatı-obturator halka doğrultusundaki kemik köprüsünü ve femur başının merkezlenmesini izleyin.

Ayırıcı tanı

Posterior duvar kırığında arka duvar fragmanı bulunur; posterior kolon kırığının eşlik edip etmediği ayrıca değerlendirilmelidir.

Transvers asetabulum kırığı, Judet–Letournel sınıflamasında yer alan kırık örüntülerindendir.

Posterior kolon kırığına posterior duvar kırığı eşlik edebilir; bu iki bileşen birlikte değerlendirilmelidir.

Posterior kolon kırıklarında BT, kırık morfolojisini tanımlamaya yardımcı olur.

Tuzaklar

• Posterior kolon kırıklarının sınıflandırılmasında BT'de çok düzlemli ve 3B rekonstrüksiyonlar ek olarak önerilir.
• Başka kırık bileşenleri eşlik etse de posterior kolon kırığı yer değiştirmemiş olabilir; BT morfolojiyi tanımlamaya yardımcı olur.
• Obturator halka kırığı tek başına kolon kırığı demek değildir; tanı için kırık hattının posterior asetabular çatı ve büyük siyatik çentikle bağlantısını gösterin.
• Femur başının medial yer değiştirmesi BT'de saptanabilir ve kırık morfolojisiyle birlikte değerlendirilebilir.

Kendini dene

1. Standart pelvis grafilerinde ilioiskial çizgi hangi kolon tutulumunu değerlendirmede kullanılır?

   • Arka kolon
   • Arka duvar
   • Ön duvar
   • Femur başı
   Cevabı göster

   Arka kolon. İlioiskial çizgi posterior kolon tutulumunu değerlendirmede kullanılan radyografik çizgilerden biridir. Posterior kolon tutulumu ilioiskial çizgiyle ilişkilendirilir.

2. Asetabular kırık örüntülerinin sınıflandırılmasında hangi ileri görüntüleme yaklaşımı önerilir?

   • MPR ve 3B BT
   • Tek yönlü pelvis grafisi
   • Yalnız ultrasonografi
   • Yalnız kontrastlı BT
   Cevabı göster

   MPR ve 3B BT. Asetabular kırık sınıflandırmasında çok düzlemli BT ve 3B rekonstrüksiyonlar ek olarak önerilir.

İlgili konular

• Asetabulum arka duvar kırığı
• Transvers asetabulum kırığı

Kaynaklar

Bu sayfadaki 38 cümle ve 2 quiz sorusu aşağıdaki kaynaklardan alıntılarla otomatik olarak karşılaştırıldı; 30 cümle bu karşılaştırmada düzeltildi (2026-10-09).

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Eğitim amaçlıdır; hasta başında tanı ve tedavi kararının yerine geçmez, tıbbi tavsiye değildir. Metinler yapay zekâ desteğiyle yazıldı ve otomatik bir adımda kaynak alıntılarıyla karşılaştırıldı; bu bir tıbbi doğrulama değildir ve içerik uzman radyolog incelemesinden geçmedi. Klinik kararlarda güncel kılavuzları, kurum protokollerini ve radyoloji raporunu esas alın.