## Breech Presentation Classification **Key Point:** Frank breech accounts for approximately 65–70% of all breech presentations and is the most common type encountered clinically. ### Types of Breech Presentation | Type | Definition | Frequency | Characteristics | |------|-----------|-----------|------------------| | **Frank breech** | Hips flexed, knees extended; feet lie against the body | 65–70% | Most common; lowest perinatal morbidity | | **Complete breech** | Hips and knees both flexed; feet tucked under buttocks | 25–35% | Intermediate frequency; higher risk than frank | | **Footling (incomplete) breech** | One or both feet point downward; hips extended | 5–10% | Rarest; highest perinatal morbidity and cord prolapse risk | | **Knee breech** | Hips extended, knees flexed | <1% | Extremely rare | **High-Yield:** Frank breech is the safest type for vaginal delivery because the flexed hips and extended knees present the smallest diameter to the pelvis. The extended legs act as a splint, reducing the risk of arm entrapment and head extension. **Clinical Pearl:** Footling breech carries the highest risk of umbilical cord prolapse (up to 15%) because the feet do not occlude the pelvic inlet, leaving space for cord descent. **Mnemonic:** **FrankCF** — Frank breech is the **C**ommonest and **F**ittest for vaginal delivery.
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