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Flashcards in 5 - Hip Joint Deck (40)
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Label the muscles on this diagram.


Label this diagram.


What are the three articulations in the hip bones?

- Pubic symphis

- Sacroiliac joint 

- Hip joint 


Label this diagram of a lateral view of the inominate bone.        


What are the two surfaces of the ilium and what attaches to each?

- Inner: concave fossa providing attachement for iliacus muscle

- Outer: Convex shape for gluteal muscle attachment


What would you not see in the hip bones of a 30 year old compared with a 15-25 year old?

In 15-25 year old you would see triradiate cartilage between the three bones, forming the acetabulum. Fusion begins at 13-15.


What are the two ligaments that attach to the ischium and what is their function?

- Form the sciatic foramens

- Limit rotation of the inferior part of the sacrum during transmission of weight of the body down the vertebral column when in erect position 


What is the hip joint made up of?

 - Synovial ball and socket joint between acetabulum and femoral head

- Ensure mobility without weakening ability of the lower limbs to support weight of the body 

- Large range of movement and very stable joint


Label the osteology of the proximal femur.

- Fovea capitis for ligamentum teres with artery 

- 125 degree angle with long axis of femoral shaft, slightly smaller angle in females


What attaches to the linea aspera and the gluteal tuberosity?

- LA: Intermuscular septa and muscles of thigh attach

- GT: site of insertion of gluteus maximus


What happens to the linea aspera towards the distal end of the femur?

Inferiorally they diverge to form lateral and medial lines. 

- Medial continues inferiorly as the medial supracondylar ridge  and terminates at the adductor tubercle on the medial condyle



Where is the capsule of the hip joint and what are the intra and extracapsular ligaments involved in the stabilisation of the joint?

- Attaches to edge of acetabulum to the intertrochanteric line anteriorly, and the femoral neck posteriorly. 

- Iliofemoral: prevent hyperextension whilst standing without muscle activity. When sitting allows pelvis to tilt back 

- Ischiofemoral: Prevents xs medial rotation of hip joint

- Pubofemoral: prevent xs abduction and extension of hip joint


What factors increase the stability of the hip joint?

- Ligamentum teres

- Cup-shaped acetabulum 

- Capsule 

- Acetabular labrum 

- Extracapsular ligaments (pull femoral head in)

- Muscles surounding joint


What is the relationship between muscles and ligaments in the hip joint?

- Anteriorly the ligaments are stronger so few medial flexors and weaker

- Posteriorly ligaments are weaker so greater number lateral rotators and stronger


Name the main 

- Flexors 

- Extensors

- Abductors

- Addutors

- Lateral rotaters

- Medial rotators 

And their assisters. 


What factors restrict flexion and extension of the hip?

F: Unflexed knee as hamstring muscles are not relaxed

E: Iliofemoral ligament and joint capsule


What is the nerve supply to the muscles of the hip joint?

- Sciatic nerve: posteriorly

- Femoral nerve: anteriorly 

- Obturator nerve: inferiorly (medial and adductors)

- Superior gluteal nerve: abductor gluts

- Nerve to Quadratus Femoris


What is the blood supply to the capsule of the hip?

Intracapsular break leads to avascular necrosis as retinacular arteries are disrupted 


What is Trendelenburg's sign?

- Superior gluteal nerve damage due to visible weakness in abductors 

- Injury: injections, fracture to greater trochanter (site of glut medius insertion), surgery, dislocation

- When standing on injured side, there is drooping on opposite side  


How is the lumbosacral plexus linked?

- Lumbar plexus is L1-L4 from anterior rami and they descend along posterior abdominal wall to supply anterior thigh 

- L4 gives off branch that combines with L5 anterior ramus that forms the lumbosacral trunk 


What are the nerves of the lumbar plexus and what are their nerve roots and where they innervate?

- L is purely sensory 


What are the nerves of the sacral plexus, their nerve roots and where do they innervate?

- Anterior rami S1-S4 with L4-L5 contribution via lumbosacral trunk 

- Innervate lower limb, pelvic muscles/organs and perineum 


What structures exit the greater sciatic foramen?

Above piriformis: 

- Superior gluteal nerves and vessels 


Below piriformis: 

- Sciatic nerve

- Nerve of obturator internus 

- Inferior gluteal nerve and vessels 

- Nerve to quadratus femoris 

- Pudendal nerves and arteries 


What structures pass through the lesser sciatic foramen?

- Tendon and nerve of obturator internus 

- Pudendal nerve and returning vessels 


What is the course of the sciatic nerve in the thigh?

- L4 to S3

- Below piriformis horizontally midway between posterior superior iliac spine and ischial tuberosity 

- Enters posterior compartment of thigh at level of greater trochanter and lies on posterior surface of adductor magnus and is crossed by long head of biceps femoris 

- Splits in tibial and common peroneal (fibular) nerve at superior popliteal fossa, and has both sensory and motor nerves

- Tibial supplies hamstrings 

- Common peroneal supplies short head biceps femoris


Where are the safe sites for IM injections in the buttocks?

- Avoid injury to sciatic nerve


With the palm of your hand, locate the greater trochanter of the femur.

SSpread your index and middle fingers posteriorly from the anterior superior iliac spine to the furthest area possible. This is the correct injection site.

Remove your fingers and insert the needle at a 90-degree angle.


Describe the anatomical structure and relevance of the fascia lata?

- Deep fascia of thigh, enclosing muscles and providing an attachement for intermuscular septae dividing thigh into three compartments 

- Thinnest medially over adductor muscles

- Saphenous opening below inguinal ligament to allow saphenous vein and lymph vessels to drain into superficial inguinal lymph nodes

- Iliotibial tract: thickened fascia lata at lateral aspect from iliac crest to tibial condyle 


What is the function of the tensor fascia lata and where does it insert?

- Assit glut med and min with abduction 

- Stabilise hip in extension 

- Stabilise knee with glut max when standing by pulling IT tract so stabilises femoral condyle on articular surface  

- Venous return by pulling IT so compression of muscle compartments 


What issues can the iliotibial band cause?

When seated can get tight so lateral knee pain and patellar instability. Can correct with physiotherapy 


What is the gluteal region?

Posterior pelvic girdle at proximal femur, muscles move the lower limb at hip joint. 

- Superficial: abduct and extend. gluts and tensor fascia lata

- Deep: laterally rotate and some medial rotation