Lower limb
Ischiogluteal, obturator, and iliopectineal bursae
Bursae ischiadicae, obturatoriae et iliopectinea
- Origin
- Deep pelvic and hip bursae: ischiogluteal bursa (between gluteus maximus and ischial tuberosity), obturator internus bursae, piriformis bursa, and iliopectineal bursa (between iliopsoas tendon and hip capsule)
- Insertion
- Located over the ischial tuberosity, lesser sciatic notch, and anterior hip joint capsule
- Function
- Protect deep pelvic nerves and tendons from bony friction during sitting, hip flexion, and rotation
- Innervation
- Branches from lumbar and sacral plexuses
- Movement & chain
- Subject to sitting compression and repetitive hip excursion
- Palpation
- Ischiogluteal bursa tender over the ischial tuberosity; iliopectineal bursa tender in deep groin
- Clinical
- Ischiogluteal bursitis (Weaver's bottom / Tailor's seat from chronic sitting, causing sciatic nerve irritation); Iliopectineal/iliopsoas bursitis (groin pain mimicking hip joint pathology or inguinal hernia)
- Segmental innervation
- L2–S2 spinal levels
- In clinical practice
- Pressure-relieving seat cushions, ultrasound-guided aspiration/injection, and physical therapy stretching of iliopsoas and hamstrings
- Region in the model
- Lower limb