Abstract
Controversy remains regarding the use of arthroplasty versus arthrodesis in the surgical
treatment of late-stage hallux rigidus. The purpose of our retrospective study was
to report the long-term follow-up results of the metatarsal head resurfacing implant
used for hemiarthroplasty. The patient assessments were conducted using the American
Orthopaedic Foot and Ankle Society (AOFAS) metatarsophalangeal clinical rating system
and a satisfaction questionnaire. A total of 59 consecutive implantations were performed
from January 2005 to December 2009 at our institution. Of the 59 patients, 2 had died
and 12 were lost to follow-up, for a 76.3% follow-up rate (45 of 59 procedures) at
a mean of 117.67 (range 96 to 143) months. The mean overall AOFAS scale score was
90.6 ± 7.6. The AOFAS pain scale score was 37.78 ± 4.71. One implant was removed,
and all remaining patients were happy with their outcome and would repeat the procedure
on their other foot, if needed. A subset of patients from a previous mid-term study
at our institution showed no significant change in the AOFAS scale scores. Of these
32 patients, 30 (93.75%) were available for follow-up examination at a mean of 122.62
(range 96 to 143) months. We were able to obtain long-term results for 32 implants
(30 patients), resulting in a 10-year follow-up rate of 93.7%. With the minimal resection
required for this implant, salvage arthrodesis remains a viable option if revision
is needed. The surgical treatment of late-stage hallux rigidus with metatarsal head
resurfacing allows for low-risk and excellent outcomes at long-term follow-up point.
Level of Clinical Evidence
Keywords
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Article info
Footnotes
Financial Disclosure: None reported.
Conflict of Interest: None reported.
Identification
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© 2017 by the American College of Foot and Ankle Surgeons. All rights reserved.
