ANATOMICAL DESIGN
2. ANATOMICAL DESIGN VALIDATION
A comprehensive review of the literature, as well as a
morphological study on a large number of cadaver specimens,
was conducted. Osseous structures were digitized to obtain:
• Geometry of articular surfaces.
• Location of diaphyseal axis compared to these surfaces.
• Key parameters such as epicondyle diameter, condyle
and trochlear distance, offset and flexion-extension axis.
• Anatomical size.
STUDY RESULTS
1 Humerus
• The capitellum is spherical and the center axis of
the trochlea is aligned with the center of the capitellum.
The mean flexion axis is 6° of valgus (range 2° to 9°) (fig. 01).
• The flexion-extension axis has a variable offset relative
to the axis of the diaphysis, varying between 4 and 8 mm
with a mean of 6 mm (fig. 02). This variability necessitates
a modular design with different articular offsets.
• There is a consistent relationship between the distance
from the center of the capitellum to the trochlear groove
and the diameter of the capitellum. The distance varies
from 15 mm
to 22.4 mm with a mean of 19 mm (fig. 03).
• The placement of the Latitude elbow is based on the normal
flexion-extension axis.
• 3 sizes of stem and 4 sizes of spool (small, medium, large,
large +).
• Different articular offsets (anterior, posterior and centered)
with respect to the humeral diaphysis.
4
Latitude Elbow Prosthesis
Latitude Elbow Prosthesis Surgical Technique UCLT101
(fig. 01)
(fig. 02)
(fig. 03)
6°
6 mm
19 mm
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