title: [Functional results of patients treated with modular prosthetic replacement for bone tumors of the extremities].
abstract: OBJECTIVE
  We evaluated functional results of patients who were treated with cemented modular prosthetic replacement for bone tumors of the extremities.
  
  
  METHODS
  The study included 23 patients (12 males, 11 females; mean age 49 years; range 14 to 81 years) who underwent wide resection and cemented endoprosthetic replacement with the TMTS (Turkish Musculoskeletal Tumor Society) prosthesis for bone tumors. Twelve patients (52.2%; mean age 63.5 years) had metastatic, 11 patients (47.8%; mean age 38 years) had primary tumors. The most common site of involvement was the femur (n=17), followed by the humerus (n=5). Functional evaluations were made with the Musculoskeletal Tumor Society (MSTS) scoring system. The mean follow-up period was 24 months (range 1 to 108 months), being 30 months for primary, and 3 months for metastatic tumors.
  
  
  RESULTS
  Postoperative complications were seen in seven patients (30.4%), being local recurrences in three patients. During the follow-up period, 11 patients died due to tumoral causes, distant metastasis developed in three patients, and nine patients were tumor-free. Survival was significantly better in patients with primary tumors (p<0.001). All the patients were able to walk without crutches in the postoperative period. The mean MSTS score was 58.9% (range 40% to 90%) in survivors, which was 71.5% (range 60% to 90%) for primary tumors, and 47.4% (range 40% to 73%) for metastatic tumors (p<0.001).
  
  
  CONCLUSIONS
  Reconstruction with cemented modular endoprostheses is an appropriate surgical alternative in the treatment of large segmental defects after resection of extremity tumors, with satisfactory functional results particularly in primary tumors.
authors.affiliation: Department of Orthopedics and Traumatology, Medicine Faculty of Trakya University, Edirne, Turkey. erolyalniz@trakya.edu.tr
authors.forename: Erol
authors.initials: E
authors.lastname: Yalniz
authors.forename: Mert
authors.initials: M
authors.lastname: Ciftdemir
authors.forename: Serdar
authors.initials: S
authors.lastname: Memişoğlu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001859:Bone Neoplasms / Q000401:mortality / Q000473:pathology / Q000556:secondary / Q000601:surgery*; D018572:Disease-Free Survival; D005260:Female; D005266:Femoral Neoplasms / Q000401:mortality / Q000473:pathology / Q000556:secondary / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D023821:Limb Salvage; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local; D011183:Postoperative Complications; D019736:Prostheses and Implants; D019919:Prosthesis Implantation / Q000379:methods*; D019651:Plastic Surgery Procedures / Q000379:methods*; D016896:Treatment Outcome; D016138:Walking / Q000502:physiology; D055815:Young Adult