Anatomy of Hip and Knee Flashcards
What type of joint is the hip joint?
Ball and socket synovial joint
How do the bones articulate in the hip joint?
Head of femur articulates with acetabulum of hip
What increases the depth of the acetabulum?
Fibrocartilaginous acetabulum LABRUM
& transverse acetabular ligament
Which part of the head of the femur is not covered in articular cartilage?
The fovea
What attaches to the fovea of the head of the femur?
Ligament of the head of femur
3 ligaments of the joint capsule in the hip
Iliofemoral
Ischiofemoral
Pubofemoral
Chief flexor of the hip joint
Iliopsoas
Iliacus and psoas major
Other flexors of the hip
Sartorius Adductor longus, brevis, magnus Rectus femoris Tensor fasciae latae Pectineus Gracilis
Hip Extensors
Gluteus maximus
Hamstrings
Adductor magnus
Name the hamstring muscles
Semitendinosus
Semimembranosus
Biceps femoris
Hip adductors
Pectineus
Adductor longus, brevis, magnus
Obturator externus
Gracilis
Hip abductors and medial rotators
Gluteus medius
Gluteus minimus
Tensor fasciae latae
Lateral rotators of the hip
Obturator internus & externus Piriformis Gluteus maximus Gemelli Quadratus femoris
Blood supply to the hip joint
Medial and lateral circumflex arteries
The medial and lateral circumflex arteries are branches of which artery
Profunda femoris
Which artery supplies the head of the femur
Obturator
Nerve supply of the hip joint (3)
Obturator
Femoral
Superior gluteal
Which type of joint is the knee joint?
Hinge synovial joint
Name the 2 articular surfaces in the knee joint
Femoro-tibial
Femoro-patellar
5 capsular ligaments of the knee joint
Patellar ligament Medial collateral Lateral collateral Oblique popliteal Arcuate popliteal
The oblique popliteal ligament is an expansion of the tendon of which muscle?
Semimembranosus
How many bursae are there around the knee joint?
12
Which 4 bursae communicate with the joint cavity?
Suprapatellar
Popliteal
Anserine bursa
Gastrocnemius bursa
From where does the tibial / medial collateral ligament extend?
Medial epicondyle of the femur
to
medial condyle and medial surface of tibia
To which structure do the deep fibres of the medial collateral ligament attach?
Medial meniscus
From where does the fibular/lateral collateral ligament extend?
Lateral epicondyle of femur
to
head of fibula
The tendon of which muscle passes deep to the fibular/lateral collateral ligament
Popliteus
Which of the cruciate ligaments is the weakest?
Anterior cruciate ligament - poor blood supply
Function of anterior cruciate ligament?
Prevents posterior displacement of femur on tibia
Prevents hyperextension of the knee
Limits posterior rolling of femoral condyles on tibia
Function of posterior cruciate ligament?
Limits anterior rolling of femur on tibia
Prevents hyperflexion of knee
Function of menisci in the knee
Deepen the surface Shock absorption Load transmission Stability Proprioception
Which meniscus is smaller and more moveable?
Lateral
The tendon of which muscle separates the lateral meniscus from the Posterior Cruciate Ligament?
Popliteus
Flexors of the knee joint
Hamstrings Sartorius Gracilis Gastrocnemius Popliteus
Extensors of the knee
Quadriceps femoris
What is the normal angle of the hip joint?
around 130 degrees
Describe the angle of the hip joint if cox valga
Over 140 degrees
Describe the angle of the hip joint if cox vara
Less than 125 degrees
Normal angle of femur anterversion
15 degrees
Normal angle of acetabular anterversion
20 degrees
Innervation of hip flexors
Femoral nerve
Innervation of hip extensors
Glut max - inferior gluteal nerve
Hamstrings - sciatic nerve
Innervation of hip abductors
Superior Gluteal nerve
Innervation of hip adductors
Obturator nerve
Innervation of internal rotators
Superior gluteal
Innervation of lateral rotators
Glut max - inferior gluteal Gemelli - nerve t obturator internus Obturator externus - obturator nerve Obturator internus - nerve to obturator internus Quadriceps femoris - nerve to q femoris
Blood supply of ligamentum teres
Acetabular branch of obturator artery
What type of bone is the patella?
Sesamoid
Innervation of knee extensors
Femoral nerve
Innervation of knee flexors
Hamstrings - Sciatic nerve
Gastrocnemius - S1
List possible knee injuries
Meniscal tear Ligament injuries OCD lesions - Osteochondritis dissecans Loose bodies Fractures Quads/Patellar tendon ruptures