Anzeige
Erschienen in:
01.03.2014 | Original Contribution
Restoration of humeral head geometry in posttraumatic fracture sequelae with stemless or resurfacing arthroplasty: a matched-paired analysis
Humeral geometry in resurfacing or stemless arthroplasty
Erschienen in: Obere Extremität | Ausgabe 1/2014
Einloggen, um Zugang zu erhaltenAbstract
Background
The objective of this study was to analyze proximal humeral geometry in two groups of patients with posttraumatic fracture sequelae who were treated with either resurfacing (R) or stemless (S) arthroplasty. The hypothesis was that there is no difference in the radiographic restoration of postoperative proximal humeral geometry after resurfacing or stemless arthroplasties.
Material and methods
A match-paired analysis of 48 cases was completed (R = 24, S = 24). Proximal geometry was assessed reviewing true anterior–posterior x-rays, measuring the inclination angle of osteotomy (IAO), distance above tuberosity (DAT), superior humeral translation (SHT) according to Torchia, medial offset (MO), and lateral offset (LO).
Results
The average follow-up was 32.4 ± 9.2 months for group R and 37.9 ± 22.9 months for group S (p = 0.317). Except for MO and SHT, no significant differences were found. Restoration of the anatomical MO was more accurate for group S. SHT of the humerus was detected more frequently for group R.
Conclusions
In this match-paired analysis, stemless arthroplasty reconstructed an anatomic MO more consistently than resurfacing arthroplasty as evaluated on x-rays; we did not document differences in the remaining evaluated parameters. However, no significant differences were found between both groups regarding clinical outcomes.