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SPECT/CT demonstrates the osseointegrative response of a stemless shoulder prosthesis.
Berth, Alexander; März, Vincent; Wissel, Heiko; Awiszus, Friedemann; Amthauer, Holger; Lohmann, Christoph H.
Afiliación
  • Berth A; Department of Orthopaedic Surgery, Otto-von-Guericke-University, Magdeburg, Germany. Electronic address: alexander.berth@medizin.uni-magdeburg.de.
  • März V; Department of Radiology and Nuclear Medicine, Otto-von-Guericke-University, Magdeburg, Germany.
  • Wissel H; Department of Radiology and Nuclear Medicine, Otto-von-Guericke-University, Magdeburg, Germany.
  • Awiszus F; Department of Orthopaedic Surgery, Otto-von-Guericke-University, Magdeburg, Germany.
  • Amthauer H; Department of Radiology and Nuclear Medicine, Otto-von-Guericke-University, Magdeburg, Germany.
  • Lohmann CH; Department of Orthopaedic Surgery, Otto-von-Guericke-University, Magdeburg, Germany.
J Shoulder Elbow Surg ; 25(4): e96-103, 2016 Apr.
Article en En | MEDLINE | ID: mdl-26652693
BACKGROUND: This study evaluates bone remodeling processes in the proximal humerus induced by the implantation of a stemless shoulder prosthesis with regard to time of response and type and extent of bone turnover. METHODS: Twenty-eight patients with primary osteoarthritis of the shoulder undergoing a stemless shoulder arthroplasty were prospectively evaluated. The local metabolic bone activity in 5 regions of interest (ROIs 1-5) around the implant and in 1 reference region (ROI ref.) in the humeral diaphysis was analyzed after the application of technetium Tc 99m DPD using single-photon emission computed tomography integrated with multidetector computed tomography (SPECT/CT). The study cohort was divided into 4 groups according to the timing of the most recent follow-up appointment to evaluate the primary osseointegrative response after surgery. The bone uptake values were expressed in target (ROIs 1-5) to nontarget (ROI ref.) ratios. RESULTS: No difference within the 4 subgroups with respect to the time of local metabolic bone activity in the ROIs was found at 90 days after surgery. The highest initial metabolic activity and most temporal modifications were found in ROI 1, which was localized in the superior segment of the stem. CONCLUSIONS: SPECT/CT data suggest that the primary osseointegration of a stemless shoulder prosthesis is almost completed 3 months after implantation. Variations in metabolic activity pattern in the ROIs during follow-up may be caused by different loading conditions of the bone.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Osteoartritis / Articulación del Hombro / Oseointegración / Artroplastia de Reemplazo / Tomografía Computarizada por Tomografía Computarizada de Emisión de Fotón Único Tipo de estudio: Observational_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Shoulder Elbow Surg Asunto de la revista: ORTOPEDIA Año: 2016 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Osteoartritis / Articulación del Hombro / Oseointegración / Artroplastia de Reemplazo / Tomografía Computarizada por Tomografía Computarizada de Emisión de Fotón Único Tipo de estudio: Observational_studies Límite: Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Shoulder Elbow Surg Asunto de la revista: ORTOPEDIA Año: 2016 Tipo del documento: Article Pais de publicación: Estados Unidos