Segmental Sistemi

Ürün Açıklaması

Zimmer ® Segmental Sistemi rezeksiyonu ve restorasyon gerektiren durumlarda distal femur, orta şaft femur, proksimal femur, ve / veya total diz yerini alması düşünülen protezi kurtarıcı bir diz. Segmental Sistemi ayrıca NexGen ® Döner Menteşe Diz Sistemleri seçilmiş bileşenleri ile uyumludur. Bu sistemi kullanarak tamamen kalça orta buzağı gelen alt ekstremite değiştirmek mümkündür. Distal femoral bileşenleri ile uyumlu olacak şekilde tasarlanmıştır NexGen Patella Bileşenleri.

Segmental Sistem kök uzantıları, kesimleri, takvime kesimleri, eklem ve distal femoral bileşenler oluşan modüler bir sistemdir. Segmental Sisteminin bileşenleri aşağıdaki malzemelerden yapılır:

  • Eklem yüzeyleri: UHMWPE ve Kobalt-Krom-Molibden Alaşımlı (menteşe sonrası)
  • Distal femoral Bileşenleri: Kobalt-Krom-Molibden Alaşımlı ve Ti-6Al-4V Alaşım (ayar vidası)
  • Polietilen Insert: UHMWPE
  • Segmentler, İnterkalar Kesimleri ve Smooth Kök yaka: Ti-6Al-4V Alaşım
  • Kök Uzantıları: Kobalt-Krom-Molibden Alaşımlı ve PMMA
  • Trabeküler Metal ™ Kök yaka: Tantal
Ürün Broşürü
Indications
This device is indicated for:
  • Moderate to severe knee instability
  • Significant bone loss and/or ligament deficiencies caused by neoplasms, trauma, rheumatoid arthritis, osteoarthritis, traumatic arthritis, polyarthritis, collagen disorders, and/or avascular necrosis of the femoral condyle
  • Valgus, varus or flexion deformities
  • The salvage of previously failed surgical attempts
A total femoral replacement construct consisting of MOST Options proximal femoral, Segmental System Segments and Segmental System Distal Femoral Components may be used without cement. Variable Stiffness stem extensions require the use of either a smooth or Trabecular Metal Stem Collar, which must be cemented to the stem. Following cementing to the stem, the smooth collar must be cemented against the bone, but the remainder of the stem must be used uncemented. Fluted stem extensions require the use of either a smooth or Trabecular Metal Stem Collar, which must be cemented to the stem. Following cementing to the stem extension, the smooth collar and the remainder of the stem must also be cemented against the bone. The Trabecular Metal collar may be used cemented or uncemented against the bone. All other constructs are for cemented use only.
Contraindications
Contraindications include:
  • Local and/or overt infection
  • Insufficient bone stock to allow secure fixation
  • Skeletal immaturity
  • Neuropathic arthropathy
  • Osteoporosis
  • A stable arthrodesis in a satisfactory functional position
Total knee arthroplasty is contraindicated in patients who have rheumatoid arthritis (RA) and an ulcer of the skin or a history of recurrent breakdown of the skin because their risk of postoperative infection is greater. The Segmental Intercalary Segment is contraindicated for use as a knee fusion device.