The cementless anatomic medullary locking femoral component: an independent clinical and radiographic assessment.
OBJECTIVE
To review the clinical performance of the anatomic medullary locking (AML) femoral stem in total hip arthroplasty.


METHODS
A clinical and radiographic review.


METHODS
A tertiary lower limb joint replacement centre.


METHODS
Two hundred and twenty-one patients with noninflammatory gonarthrosis.


METHODS
Two hundred and twenty-seven primary total hip arthroplasties with the noncemented AML component completed by two surgeons.


METHODS
Independent review by two experienced reviewers of the postoperative Harris hip score, radiographs of component fixation, size and degree of diaphyseal fill.


RESULTS
Harris hip score was 84 (range from 43 to 98); component fixation showed bone ingrowth in 41%, stable fixation with fibrous ingrowth in 56% and unstable fixation in 3%; severe thigh pain in 4% of cases correlated with unstable fixation, and there was mild thigh pain in 20% of cases.


CONCLUSIONS
The AML femoral stem performs well in replacement arthroplasty compared with other noncemented stems.
Chess
D G
DG
Department of Surgery, St. Joseph's Health Centre, University of Western Ontario, London.
Grainger
R W
RW
Phillips
T
T
Zarzour
Z D
ZD
Sheppard
B R
BR
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000601:surgery; D011474:Prosthesis Design; D011859:Radiography