Abstract:
INTRODUCTION:The most common reason for removal of well-fixed radial head prostheses is painful loosening. We hypothesised that short-stemmed prostheses, used for radial head arthroplasty, are not associated with an increased risk of implant loosening. METHODS:From 2002 to 2014, 65 patients were enrolled in a retrospective single-centre study. The radial head prostheses were classified as having either a long (30-mm) or short (16- to 22-mm) stem. The long-stemmed implants comprised 30 GUEPAR® DePuy Synthes (West Chester, PA, USA) and 20 Evolutive® Aston Medical (Saint-Etienne, France) devices; the short-stemmed implants comprised nine RECON and six STANDARD rHead® SBI-Stryker (Morrisville, PA, USA) devices. At last follow-up, clinical (range of motion, Disabilities of the Arm, Shoulder, and Hand score, Mayo Elbow Performance score) and radiographic (osteolysis) outcomes were assessed. RESULTS:At a mean follow-up of 76.78 months (24-141), the rate of painful loosening [6 (40%) vs 8 (16%), p = 0.047] and osteolysis [12 (80%) vs 23 (46%), p = 0.02] were significantly higher in patients with short-stemmed versus long-stemmed implants. Despite the significant difference in loosening between stems as groups, individual stem length was not determined. CONCLUSIONS:Tight-fitting implants with short stems are more prone to painful loosening.
journal_name
Int Orthopjournal_title
International orthopaedicsauthors
Laumonerie P,Reina N,Gutierrez C,Delclaux S,Tibbo ME,Bonnevialle N,Mansat Pdoi
10.1007/s00264-017-3644-6subject
Has Abstractpub_date
2018-01-01 00:00:00pages
161-167issue
1eissn
0341-2695issn
1432-5195pii
10.1007/s00264-017-3644-6journal_volume
42pub_type
杂志文章abstract:PURPOSE:The purpose of this study was to determine the location of the anterior humeral circumflex artery and axillary nerve based on bony landmarks, and to provide anatomical information that enables a safe approach when treating a proximal humeral fractures. METHODS:Thirty cadavers were included. The distances of bo...
journal_title:International orthopaedics
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