Development of Bioabsorbable Interference Screws: How Biomaterials Composition and Clinical and Retrieval Studies Influence the Innovative Screw Design and Manufacturing Processes - Biologically Responsive Biomaterials for Tissue Engineering - page 113

Table 6.3 Different types of bioresorbable interference screws analyzed

Self-tapping/
number of
fl utes

Shape of
channels for
screwdriver

Cannulated/
perforated

Thread shape/
single helix Shape Screw head Name/producer

Perforated No Cylindrical

and
tapered
at the
distal
end

Cross hollow
core;
allows to
be fi lled
with graft

Round Constant pitch/

single
helix/
buttress
thread
combined
rounded on
the
cylindrical
part

BioCore—
Biomet

Cannulated No Conical Hexagonal

(additional
triradiate
for round
head)

Headless
(round
for
femoral
screw)

Blunt threads Delta Bio

Interference
Screw
Arthrex

Cannulated No Cylindrical/

cone
distal

Hex Round Pointed with a

starter
thread,
chamfered

Milagro—
DePuy
Mitek