TY - JOUR
T1 - "Trunionitis"
T2 - A cause for concern?
AU - Toni, Aldo
AU - Baleani, Massimiliano
AU - Bordini, Barbara
AU - Stea, Susanna
AU - Pilla, Federico
AU - Sudanese, Alessandra
PY - 2012/12
Y1 - 2012/12
N2 - Large diameter heads (LDH) are connected to the stem by means of a Morse taper. An adapter sleeve may be also used to adjust the head offset intraoperatively and/or to change the bearing couple and size. This paper explains the effect of head diameter and friction coefficient on the frictional torque acting on the tapers. A greater frictional torque tends to increase the micromotion occurring with in the tapered junction. Other crucial parameters are those that determine the distance between the center of the head and the tapered junction engagement level (e.g. head offset, adapter sleeve). Caution must be paid in using LDH coupled to small tapered junction, with or without an adapter sleeve.
AB - Large diameter heads (LDH) are connected to the stem by means of a Morse taper. An adapter sleeve may be also used to adjust the head offset intraoperatively and/or to change the bearing couple and size. This paper explains the effect of head diameter and friction coefficient on the frictional torque acting on the tapers. A greater frictional torque tends to increase the micromotion occurring with in the tapered junction. Other crucial parameters are those that determine the distance between the center of the head and the tapered junction engagement level (e.g. head offset, adapter sleeve). Caution must be paid in using LDH coupled to small tapered junction, with or without an adapter sleeve.
KW - Head adapter
KW - Large diameter head
KW - Metal debris
KW - Metal ion
KW - Total hip arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=84875351498&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875351498&partnerID=8YFLogxK
U2 - 10.1053/j.sart.2013.01.007
DO - 10.1053/j.sart.2013.01.007
M3 - Article
AN - SCOPUS:84875351498
VL - 23
SP - 248
EP - 250
JO - Seminars in Arthroplasty
JF - Seminars in Arthroplasty
SN - 1045-4527
IS - 4
ER -