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MIÉRCOLES / WEDNESDAY<br />

100<br />

27. Ornstein. E, Atroshi. I, Franzen. H, Johnsson. R, Sandquist.<br />

P and Sundberg. M: Early complications after one<br />

hundred and forty-four consecutive hip revisions with<br />

impacted morselized allograft bone and cement. J Bone<br />

and Joint Surg., 84-A: 1323-1328.2002.<br />

28. Raut. VV, Siney. PD, Wroblewski. BM: Outcome of revision<br />

mechanical stem faliure using the cemented Charnley´s<br />

stem. A study of 339 cases. J Arthroplasty. 11:4,<br />

405-10. 1996.<br />

29. Souminen. S, and Santavirta. S: Revision total hip arthroplasty<br />

in deficient proximal femur using a distal loadbearing<br />

prosthesis. Ann Chir Gynaecol. 85:3, 253-62.<br />

1996.<br />

30. Sugimura. T, Tohkura. A: THA revision with extensively<br />

porous coated stems. 32 hips followed 2-6.5 years. Acta<br />

Orthop Scand. 69:1, 11. 1998.<br />

31. Wagner. H: A non allogaft press fit alternative. Current<br />

Concepts in Joint Replacement. Orlando. December 1995.<br />

32. Young-Min Kim, Hee Joong Kim, Won Seok Song, Jeong<br />

Joon Yoo. Experiences with the biocontact revisions tems<br />

with distal interlocking. J Arthroplasty 19 (1):27-33. 2004.<br />

LONG TERM RESULTS IN HA-COATED<br />

REVISION HIP ARTHROPLASTY<br />

Rudolph Geesink MD PhD<br />

Professor of Orthopaedic Surgery, Maastricht University,<br />

Netherlands<br />

The goal of hip revision surgery is to restore longevity of<br />

pain-free function that has been disturbed by one of the<br />

many failure mechanisms in arthroplasty.<br />

Main challenges include:<br />

- provide stable fixation of the new implant<br />

- provide stable joint resistant against dislocation<br />

- restore the bone that has been damaged by osteolysis and<br />

stress-shielding<br />

Progress in fixation biology through the use of HA-coatings<br />

has permitted expanded indications for the use of HA-coated<br />

implants in revision arthroplasty, especially on the femoral<br />

side. HA-coatings have been used in revision arthroplasty<br />

since 1986 in several stages of evolution. The first generation<br />

of implants using HA-coated Omnifit stems with now 20 years<br />

follow-up has resulted in excellent long term survival although<br />

the scope of application was somewhat limited as it is actually<br />

a primary stem. Long term follow-up of 63 cases initially with<br />

average age of 53 years at time of revision surgery and 61%<br />

multi-revisions showed survival rates at minimum 15 year<br />

follow-up of 92%.<br />

Based upon the same design characteristics the evolutionary<br />

HA-coated Restoration stem became available in 1997 with<br />

variable stem lengths and diameters followed by the even<br />

more flexible modular successor in 2005. They have greatly<br />

expanded the versatility and success rate even in complex<br />

revision surgery. Although the numbers have increased,<br />

follow-up is still limited but based on the excellent results of<br />

previous generations where upon its design was based we<br />

can expect excellent and reliable long term results. Initial<br />

complication rate is low and the early mechanical failure rate<br />

is below 2%.<br />

FRACTURAS PERIPROTÉSICAS<br />

DE FÉMUR<br />

Carles Mestre<br />

Hospital de l’Esperança. IMAS. Barcelona (Spain)<br />

TWO- TO FIVE-YEAR FOLLOW-UP OF<br />

MOSTLY TYPE III FEMORAL DEFECTS IN<br />

REVISION THR TREATED WITH THE LINK<br />

MP STEM<br />

Rodriguez JA, Fada R, Murphy SB, Rasquinha VJ,<br />

Ranawat CS<br />

Lenox Hill Hospital. New York (USA)<br />

BACKGROUND<br />

Femoral bone deficiency has been shown to adversely affect<br />

the results of revision THR. Tapered titanium modular stems<br />

allow distal fixation of the fluted, conical portion of the stem<br />

in the remaining bone, and may be a more versatile approach<br />

to fixation in the setting of proximal bone loss.<br />

METHODS<br />

One hundred and two consecutive hips with proximal bone<br />

loss underwent revision femoral reconstruction between 1998<br />

and 2002 at 3 centers using the Link-MP modular stem. Fortythree<br />

hips had Mallory Type 3C femoral deficiency. Ninety-

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