Mechanical Comparison of Novel Bioabsorbable Plates with Titanium Plates and Small-Series Clinical Comparisons for Metacarpal Fractures

Sakai A, Oshige T, Zenke Y, et al (Univ of Occupational and Environmental Health, Kitakyushu, Japan) J Bone Joint Surg Am 94:1597-1604, 2012^§

Abstract

Background

The use of bioabsorbable implants to negate the need for subsequent removal could offer major clinical advantages for the fixation of fractures. The aims of this study were to compare the mechanical properties of novel bioabsorbable plates with those of titanium plates in a fracture model and to demonstrate the clinical results of the use of these new plates for metacarpal fractures.

Methods

The first set of experiments compared the mechanical properties of bioabsorbable and titanium plates. Two types of bioabsorbable plates (one-third tubular and semi-tubular in cross-section) made of hydroxyapatite/poly-L-lactide and two types of titanium plates (for 1.5 and 2.0-mm screws) were tested. Each plate was fixed on a polyether ether ketone (PEEK) rod, which was transversely cut at its midsection. The second part of the study compared the clinical results associated with the bioabsorbable and titanium plates that were used in sixteen nonrandomized consecutive patients with metacarpal fractures.

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