Osteology Flashcards
Ossification centres of the pelvic bone
3 primary: close in 2,3 and 4th month
5 secondary ossification centers. Close at adulthood, 25years
What are the five secondary ossification centers
Iliac crest, pubic symphysis, anterior inferior iliac spine, ischial tuberosity and acetabular cartilages
Y shaped cartilage of the acetabulum at birth is called
Triradiant ligament: fuses at 17years
Lunate surface
The articular surface of the acetabulum
Ossification centre of femur. Primary
Shaft.. ossifies in 17th week(5th month)
Secondary ossification pointe of femur
Head 1st year
Greater trochnter 4th year
Lesser trochanter 14th year
What type of bone is the patella
Sesamoid bone. Primary ossification centres are at 3rd year
Weakest part of pelvis?
Acetabulum
Weakest part of femur
Femoral neck..
An intracapular fracture can leave to damage of medial femoral circumflex leading to avascular necrosis
Most common femur fracture
Shaft.. but in the elderly neck of femur
Fibula
Does not bear weight
Stabilizer of ankle joint
Attachment of muscles
Not part of knee joint
Interosseous membrane is made of
Dense regular connective tissue
Proximal tibiofibular join is a
Plane type synovial joint
Distal tibiofibular joint is
Syndesmosis joint.
Primary Ossification centers of tibia and fibula
Fibular: shaft 8th week
Tibia: shaft. 7th week
Clinical anatomy of tibia
Proximal end is most susceptible for osteomyelitis
Clinical anatomy of fibula
Ideal bone for grafting
Proximal group of tarsal bones include
Talus and calcaneus
Intermediate group of tarsal bones
Navicular
Distal group of tarsal bones
Cunieforms and cuboid bone
The ankle joint(talocrural) is formed by?
Talus tibia and fibula
It’s a synovial hinge joint
Joint between calcaneus and talus is called
Subtalar joint. Plane synovial joint
What type of joint is The hip joint.
It’s a multiaxial ball and socket synovial joint.
Hip joint is stabilized by
The acetabular labrum made of fibrocartilage
Fibrous capsule
Capsular ligaments
Blood supply to hip joint
Medial and lateral circumflex femoral
Superior and inferior gluteal
Obturator branches
Nerve supply to hip join
Sciatic
Femoral
Obturator
Superior gluteal nerve to quadratus femoris
Function of transverse acetabular ligament
Allows nutrient vessels to enter the joint
Coxa vara
Reduction in the angle between neck of femur and shaft while coxa valga is the increase in agle.. 135degrees
Perthes disease
Childhood disease where blood supply is disrupt leading to avascular necrosis
