title: Collagen membranes for host-implant integration: a pilot clinical study.
abstract: OBJECTIVE
  To evaluate host-implant integration with collagen membranes in 14 patients who underwent limb salvage surgery for musculoskeletal oncological disease.
  
  
  METHODS
  8 females and 6 males aged 10 to 69 (mean, 30) years underwent limb savage surgery with collagen membranes (Tutomesh; Tutogen Medical, Germany) for osteosarcoma (n=7), chondrosarcoma (n=3), giant cell tumour (n=1), malignant fibrous histiocytoma (n=1), arteriovenous malformation (n=1), and pigmented villonodular synovitis (n=1). The procedures performed were proximal humeral resection (n=3), partial scapulectomy (n=1), proximal femoral resection (n=2), total femoral resection (n=2), proximal tibial resection (n=3), and wide resection of soft tissues of the knee (n=3). In addition, 10 patients underwent endoprosthesis reconstruction. Reconstruction of musculoskeletal defects was classified into type I (intercalary, n=2), type II (joint, n=4), and type III (both, n=8). Graft incorporation and local recurrence were monitored. Clinical outcome measures entailed the Short Form-36, Toronto Extremity Salvage Score (TESS), and Musculoskeletal Tumor Society Score (MSTS).
  
  
  RESULTS
  Two patients with proximal tibial resection and one with total femoral resection had wound healing problems. No patient had any infection or any foreign body reaction necessitating implant removal. Eight patients with type II or III reconstruction were followed up for a mean of 11 (range, 1-23) months. Their scores in the Short Form-36, TESS, and MSTS were similar to those who had undergone reconstructions without the membrane, with the exception of type II reconstructions for which the membrane conferred good results.
  
  
  CONCLUSIONS
  The Tutomesh membrane facilitated host-implant integration and provided a feasible anatomic reconstruction for ligaments in the shoulder, knee, and hip.
authors.affiliation: Department of Orthopedic Surgery, National University of Singapore, Singapore. dosssn@nus.edu.sg
authors.forename: Saminathan Suresh
authors.initials: SS
authors.lastname: Nathan
authors.forename: Edwin Ravanzo
authors.initials: ER
authors.lastname: Guerzon
authors.forename: Kishore
authors.initials: K
authors.lastname: Bhavanam
authors.forename: Lay Hong
authors.initials: LH
authors.lastname: Tan
authors.forename: Khin
authors.initials: K
authors.lastname: Zarchi
authors.forename: Barry P
authors.initials: BP
authors.lastname: Pereira
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001859:Bone Neoplasms / Q000601:surgery*; D002648:Child; D002813:Chondrosarcoma / Q000601:surgery; D005260:Female; D005266:Femoral Neoplasms / Q000601:surgery; D006801:Humans; D023821:Limb Salvage / Q000379:methods*; D008297:Male; D008567:Membranes, Artificial; D008875:Middle Aged; D012516:Osteosarcoma / Q000601:surgery*; D010865:Pilot Projects; D019651:Plastic Surgery Procedures / Q000379:methods; D023822:Tissue Engineering; D054457:Tissue Scaffolds; D055815:Young Adult
chemical_list: D008567:Membranes, Artificial