8. Permanent Fixture
Wedding Ring
Insertion Technique:
Make 4mm incision to reveal bone.
Clamp tissue.
Drill bone to depth of 5mm. Use
guide mechanism to insert 5mm self-
tapping screw. Suture wound.
Contraindications:
Bone will calcify around screw
threads in 6 – 8 weeks preventing
removal. High risk of septicaemia
due to open nature of wound. Tissue
trauma indicated.
body interventions
57. the value of making fast physical prototypes
how to collaborate with others
to involve potential users in the design process early on
to communicate verbally about my work
the value (and limitations) of my knowledge
‘muser’-centred to user-centred