Médecine

Paramédical

Autres domaines


S'abonner

Histological characteristics of induced membranes in subcutaneous, intramuscular sites and bone defect - 02/12/13

Doi : 10.1016/j.otsr.2013.08.009 
H. Liu a, 1, G. Hu b, 1, P. Shang c, Y. Shen a, P. Nie a, L. Peng a, b, d, , H. Xu a
a Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, 109, Xueyuanxi Road, Wenzhou 325000, China 
b Trauma Center, Affiliated Hospital of Hainan Medical College, 31, Long Hua Road, Haikou 571100, China 
c Department of Rehabilitation, Second Affiliated Hospital of Wenzhou Medical University, 109, Xueyuanxi Road, Wenzhou 325000, China 
d Department of Orthopaedic Surgery, Hainan Provincial People's Hospital, 19, Hua Xiu Road, Haikou 570311, China 

Corresponding author. Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical College, 109, Xueyuanxi Road, Wenzhou 325000, China. Tel.: +86-577-88829799; fax: +86-577-88816191.

Bienvenue sur EM-consulte, la référence des professionnels de santé.
Article gratuit.

Connectez-vous pour en bénéficier!

Summary

Background

The induced membrane technique was proposed as a treatment of large segmental bone defects. The influence of the surrounding tissues on its characteristics remains unknown. It is therefore not known which kind of plastic surgery procedure (muscular or facio-cutaneous flap) would optimize bone osteointegration within a bone defect reconstructed using the induced-membrane technique.

Hypothesis

We hypothesized that membrane characteristics could be influenced by the soft-tissue environment either subcutaneous or muscular.

Objective

To evaluate the histological characteristics of poly-methylmethacrylate (PMMA) induced membranes in intramuscular, subcutaneous and bony environment (radius defects) at 2 steps: spacer implantation; secondary bone graft and its subsequent osteintegration after spacer removal.

Methods

PMMA-induced membranes were obtained in the three sites of 15 rabbits. Subsequent new bone formation was studied in the same environments in 24 other rabbits. Six weeks after the initial implantation, PMMA spacers were replaced with iliac autografts. Animals were euthanized at 2, 4, and 8 weeks postoperatively. Tissue samples were harvested and stained with hematoxylin and eosin. The histological characteristics of the membrane (thickness and microvessel density) and the newly-formed bone (cortical thickness) were quantitatively analyzed.

Results

The membranes in the subcutaneous sites developed quicker, were thicker and had the lowest microvessel density (P<0.01). The membranes in the intramuscular sites developed later and were thinner (P<0.01). The membranes in the osseous defects had the greatest microvessel density (P<0.01). After bone grafting, induced membranes became thinner and their microvessel density decreased substantially, but maintained better in osseous site. The newly-formed bone that developed in the radius defects, had the thickest cortices (P<0.01).

Conclusions

The evolution of membranes induced in the intramuscular and subcutaneous environments was close to that of the bone defect model, although bone formation appeared weaker.

Level of evidence

Basic science study III.

Le texte complet de cet article est disponible en PDF.

Keywords : Induced membrane, Subcutaneous, Intramuscular, Bone graft


Plan


© 2013  Elsevier Masson SAS. Tous droits réservés.
Ajouter à ma bibliothèque Retirer de ma bibliothèque Imprimer
Export

    Export citations

  • Fichier

  • Contenu

Vol 99 - N° 8

P. 959-964 - décembre 2013 Retour au numéro
Article précédent Article précédent
  • Management of civilian ballistic fractures
  • V.S. Seng, A.C. Masquelet
| Article suivant Article suivant
  • Percutaneous ilio-sacral screw insertion. Fluoroscopic techniques
  • J. Tonetti, J. van Overschelde, B. Sadok, H. Vouaillat, A. Eid

Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement ou un achat à l’unité.

Déjà abonné à cette revue ?

;

Mon compte


Plateformes Elsevier Masson

Déclaration CNIL

EM-CONSULTE.COM est déclaré à la CNIL, déclaration n° 1286925.

En application de la loi nº78-17 du 6 janvier 1978 relative à l'informatique, aux fichiers et aux libertés, vous disposez des droits d'opposition (art.26 de la loi), d'accès (art.34 à 38 de la loi), et de rectification (art.36 de la loi) des données vous concernant. Ainsi, vous pouvez exiger que soient rectifiées, complétées, clarifiées, mises à jour ou effacées les informations vous concernant qui sont inexactes, incomplètes, équivoques, périmées ou dont la collecte ou l'utilisation ou la conservation est interdite.
Les informations personnelles concernant les visiteurs de notre site, y compris leur identité, sont confidentielles.
Le responsable du site s'engage sur l'honneur à respecter les conditions légales de confidentialité applicables en France et à ne pas divulguer ces informations à des tiers.