Transcript Frames of Reference in the Femur

Aim of the programme

Develop working Frames of Reference
– The neck and head relative to the shaft

To allow the deformity to be
– Described
– Surgery to be optimised#
– Then move on to the pelvis

And knee etc
Base of Neck Plane (BNP) =
Top of the neck
=
Base of the head
=
Results 2

Neck
– Length: 21.4 mm (4.5)
– Height: 34.2 mm (3.7)
– Width: 27.4 mm (3.3)

Head
– Radius: 24.1 mm (2.1)
– Length: 10.1 mm (1.5)
Mean value of sample population
(standard deviation; SD)
Results 3

Neck shaft angles
– Head-on-neck shaft angle

Mean: 126.9◦; SD: 14.6◦; range: 103.5-149.1◦
Summary

Hardik achieved his preliminary aim:
– FoR for the neck and head

independent of each other
– Allow description of anatomy
Standardised manner
 To enable surgery to be planned
 Surgical outcomes to be validated.
