Profunda
Femoris artery
gives medialand
lateral
circumflex
arteries
These two form
the Extra
capsular arterial
ring
Blood Supply to Proximal femur
5.
Blood supply tothe Femoral
Head
This arterial ring gives
retinacular vessels
which go along the neck
of the femur so they are
called ascending
cervical arteries
6.
Blood Supply tothe femoral head
These form a ring just
below the head called
the Sub Synovial Intra
Articular arterial ring
From this intra articular
ring of arteries
epiphyseal vessels go
into the head of the
femur
Head is also supplied by
the artery of
ligamentum teres
Why fractures ofneck fail to heal?
No Cambium layer in the intra capsular area,
so peripheral callus
Synovial fluid lyses the fracture hematoma
Avascularity of the head is imminent due to
the peculiarity in the blood supply
14.
Etiology
Osteoporosis in elderlypatients
Usually lateral rotation of femur cracks the
fragile neck and then the patients fall
Osteomalacia in the young
Major trauma in young adults
15.
Fracture of Neckof Femur
Most of these are displaced
A few are impacted.
Garden Classification
I Valgusimpacted or
incomplete
II Complete
Non-displaced
III Complete
Partial displacement
IV Complete
Full displacement
21.
Plain Film
– Considertraction-internal
rotation view if comminuted
CT scan
– Displacement
– comminution
Diagnosis
22.
22
MRI
– For evaluationof
occult femoral neck
fracture
• Consider MRI in an
elderly patient who is
persistently unable to
weight bear
– 100% sensitive and
specific
Diagnosis
Treatment
Depends on theage of the patient
Aim in children, young adults and upto
60 Y – save the head
– Risk of non-union and avascular necrosis of the
head is always there
After 60 Years or if the bone is osteoporotic
– replace the head
26.
In patients lessthan 16 Y
The capital epiphysis is open and viable
Try to protect it
Closed reduction under C-arm control and
fixation with Austin Moore Pins (Smooth)
28.
Patients above 16-18Y
Epiphysisis fused, no more growth
expected
Closed reduction under C-arm control and
fixation with cancellous screws
If it is more than 3 weeks old – fix it and
graft it with muscle pedicle graft
In old patients
Headis osteoporotic
No chance of healing of fracture
Hemi replacement with
– Austin Moore prosthesis if the calcar is
present
– Thompson's prosthesis if the calcar is
absent
Patient is anold geriatric
There will be lot of oteoporosis
Femur will also be weak
The prosthesis may sink
So cemented prosthesis – cement in the
shaft of femur holds the prosthesis from
sinking
35.
Case example
78 Yold lady
H/O trivial fall one month ago
H/O Hemi-replacement on one hip an year
ago
The other one is painful after fall