Locked vs. unlocked plate osteosynthesis of the proximal humerus - a biomechanical study.
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Locked vs. unlocked plate osteosynthesis of the proximal humerus - a biomechanical study. / Seide, K; Triebe, J; Faschingbauer, M; Schulz, A P; Püschel, Klaus; Mehrtens, G; Jürgens, Ch.
In: CLIN BIOMECH, Vol. 22, No. 2, 2, 2007, p. 176-182.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Locked vs. unlocked plate osteosynthesis of the proximal humerus - a biomechanical study.
AU - Seide, K
AU - Triebe, J
AU - Faschingbauer, M
AU - Schulz, A P
AU - Püschel, Klaus
AU - Mehrtens, G
AU - Jürgens, Ch
PY - 2007
Y1 - 2007
N2 - BACKGROUND: Locked plates (internal fixators) have been found to be an optimal method for the fixation in proximal humeral fractures. In a biomechanical cadaver study the difference between locked and non-locked osteosyntheses was investigated. METHODS: Paired humeri were harvested, bone density measured. Locked internal fixators were mounted on one specimen; identical plate-screw-systems without locking mechanism applied to the contralateral specimen for comparison. After that, a transverse subcapital osteotomy was performed. With 7 pairs of humeri static tests with increasing axial loads and with 5 pairs dynamic tests with 10 N preload and 80 N maximal axial load for up to 1 million cycles were performed. RESULTS: In the static experiments the elastic stiffness of the construct was 74% higher in the locked group (median 80 N/mm, quartile range 77-86 N/mm) compared with the non-locked group (46 N/mm, 35.5-56.5 N/mm). The difference was statistically significant (Wilcoxon test for paired samples, P
AB - BACKGROUND: Locked plates (internal fixators) have been found to be an optimal method for the fixation in proximal humeral fractures. In a biomechanical cadaver study the difference between locked and non-locked osteosyntheses was investigated. METHODS: Paired humeri were harvested, bone density measured. Locked internal fixators were mounted on one specimen; identical plate-screw-systems without locking mechanism applied to the contralateral specimen for comparison. After that, a transverse subcapital osteotomy was performed. With 7 pairs of humeri static tests with increasing axial loads and with 5 pairs dynamic tests with 10 N preload and 80 N maximal axial load for up to 1 million cycles were performed. RESULTS: In the static experiments the elastic stiffness of the construct was 74% higher in the locked group (median 80 N/mm, quartile range 77-86 N/mm) compared with the non-locked group (46 N/mm, 35.5-56.5 N/mm). The difference was statistically significant (Wilcoxon test for paired samples, P
M3 - SCORING: Zeitschriftenaufsatz
VL - 22
SP - 176
EP - 182
JO - CLIN BIOMECH
JF - CLIN BIOMECH
SN - 0268-0033
IS - 2
M1 - 2
ER -
