MCQ MAHE 2000 Orthopedics Answer 09

• Hip: Synovial enarthrosis – flexion (0-140^o), extension (0-10^o), abduction (0-45^o), adduction (0-30^o), internal rotation (0-40^o), external rotation (0-50^o)
• Articulation of head of femur with acetabulum (ilium, ischium, pubis), connected by ligamentum teres (attaches to fovea; contains branch from obturator artery)
• Synovial joint deepened by U-shaped acetabulum labrum (fibrocartilaginous ring)
• Head of femur supplied mainly by retinacular branches from circumflex arteries
• Fractured NOF proximal to inter-trochanteric line à avascular necrosis of head. (Clinically: limb foreshortened and externally rotated)

• Capsule: attaches to acetabulum labrum, transverse acetabular ligament and inter-trochanteric line. (Lower third of neck is extracapsular).
• Strengthened by iliofemoral (Y-shaped), pubofemoral and ischiofemoral ligaments
• Posterior dislocation à possible injury to sciatic nerve

Category: MAHE 2000 MCQs