Hip Flashcards
Congenital hip dislocation
- Babies with shallow acetabulum and abnormal muscle tone
- Hip dislocates very easily
- Barlow test and Ortolani test
Legg-Calve’-Perthes disease (coxa plana)
- Happens in young kids, causes limp
- Disrupted blood supply to femoral head
- Deformation and necrosis of femoral head
- Head dies, then revascularizes and remodels
Slipped capital femoral epiphysis
- Ice cream falls off the cone
- Proximal epiphysis slips out of normal position
- Children during growing years
Coxa valga
- Angle of inclination greater than 125°
- Causes genu varum (bowlegs)
- Contributes to congenital hip dislocation
- Greater wear and tear on the knee
Coxa vara
- Angle of inclination less than 125°
- Causes genu valgum (knock-knees)
Anteversion
- Angle of tosion of femoral head and femoral condyles greater than 15°
- limits IR
Retroversion
- Angle of tosion of femoral head and femoral condyles less than 15°
- limits ER
Osteoarthritis
Degeneration of the articular cartilage of the femoroacetabular joint causing pain,
Hip fractures
- Mostly intertrochanteric or femoral neck Fx
- Often managed with hip replacement
IT band syndrome
- Overuse injury causing lateral knee pain
- Friction of IT band as it slides over lateral femoral epicondyle
Trochanteric bursitis
- Inflammation due to overuse
- Common in runner and cyclists
Hamstring strain
- Pulled hamstring
- Overload of muscle or trying to contract too quickly
- Sports requiring rapid acceleration
Acetabular labrum
- Fibrocartilage rim attached to acetabulum
- Increases depth of acetabulum and coverage for head of femur
- Increases stability, limits mobility
IT band
- Insertion for TFL and glute max
- long, thick fascia band on superficial, lateral thigh
What muscles insert at the pes anserinus?
Gracilis, sartorius, semimembranosus
Ligamentum teres
- Attaches to both sides of acetabular notch and fovea of femoral head
- Small blood vessel to the fovea accompanies the ligament
What 3 ligaments reinforce the joint capsule?
Iliofemoral, ischiofemoral, pubofemoral
Iliofemoral ligament
- Y ligament/ligament of Bigelow
- Spans hip anteriorly in a spiral
- Attaches proximally to AIIS, then divides into 2 parts, both attaching distally to intertrochanteric line (inverted Y)
- Limits hip ext
- Reinforces anterior capsule
- Resists forces causing anterior dislocation
Pubofemoral ligament
- Spans hip inferiorly in a spiral
- limits hip extension and abduction
- Reinforces inferior capsule
Ishiofemoral ligament
- Spans hip poseriorly and superiorly in a spiral
- limits hip extension and IR
- Compensation of “hanging”
Which ligament is not associated with any joint?
Inguinal ligament
Inguinal ligament
- Attaches to ASIS and pubic tubercle
- Landmark to separate anterior abdominal wall from thigh
- External iliac artery and vein pass under and are renamed femoral artery and vein
- Iliopsoas and femoral nerve pass underneath
Femoral triangle
Femoral artery, vein, and nerve