VALUTAZIONE DENSITOMETRICA COMPUTERIZZATA DEL RIMODELLAMENTO OSSEO NELLA PROTESI D'ANCA

Translated title of the contribution: Computerized densitometric evaluation of bone remodeling in hip prosthesis

A. Toni, F. Baruffaldi, M. Viceconti, A. Sudanese, F. Fabbri, F. Fanton, A. Bueno Lozano, A. Giunti

Research output: Contribution to journalArticle

Abstract

In the field of orthopaedic surgery, as well as in the specific case of Total Hip Arthroplasty (THA), radiographic evaluation is traditional and still widely used, but its interpretation is subjective, not quantitative and scarcely repeatable. By means of a simple and inexpensive system, based on commercial hardware with a 512 x 512 spatial resolution matrix and 256 levels of gray, we can now evaluate on x-ray films the effect of long term bone remodeling around hip arthroplasties. The results of Computer Aided Densitometric Image Analysis (CADIA) applied to the historical archive are burdened by a not always acceptable significance. The main noise sources, such as the variance of radiological parameters, are a serious obstacle to the densitometric use of a traditional radiological archive. An attempt to retrieve the historical archive, that is of every X-ray film obtained out of any radiological control protocol, can be carried out with the bone density ratio representation. We evaluate two different specimens with bone density ratio analysis: cementless group (96 cases) and non prosthetized femurs group (51 cases) as a control, all groups with follow-up > months. Ratios representation evidenced different behaviour among the two specimens: cementless THA clearly showed bone remodeling phenomena, which could be quantitatively evaluated.

Original languageItalian
Pages (from-to)955-963
Number of pages9
JournalMinerva Ortopedica e Traumatologica
Volume44
Issue number12
Publication statusPublished - 1993

Fingerprint

Hip Prosthesis
Bone Remodeling
Arthroplasty
Hip
Bone Density
X-Ray Film
Motion Pictures
Femur
Orthopedics
Noise
X-Rays
Control Groups

ASJC Scopus subject areas

  • Surgery

Cite this

VALUTAZIONE DENSITOMETRICA COMPUTERIZZATA DEL RIMODELLAMENTO OSSEO NELLA PROTESI D'ANCA. / Toni, A.; Baruffaldi, F.; Viceconti, M.; Sudanese, A.; Fabbri, F.; Fanton, F.; Bueno Lozano, A.; Giunti, A.

In: Minerva Ortopedica e Traumatologica, Vol. 44, No. 12, 1993, p. 955-963.

Research output: Contribution to journalArticle

Toni, A, Baruffaldi, F, Viceconti, M, Sudanese, A, Fabbri, F, Fanton, F, Bueno Lozano, A & Giunti, A 1993, 'VALUTAZIONE DENSITOMETRICA COMPUTERIZZATA DEL RIMODELLAMENTO OSSEO NELLA PROTESI D'ANCA', Minerva Ortopedica e Traumatologica, vol. 44, no. 12, pp. 955-963.
Toni, A. ; Baruffaldi, F. ; Viceconti, M. ; Sudanese, A. ; Fabbri, F. ; Fanton, F. ; Bueno Lozano, A. ; Giunti, A. / VALUTAZIONE DENSITOMETRICA COMPUTERIZZATA DEL RIMODELLAMENTO OSSEO NELLA PROTESI D'ANCA. In: Minerva Ortopedica e Traumatologica. 1993 ; Vol. 44, No. 12. pp. 955-963.
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