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UNICOMPARTMENTAL KNEE PROSTHESIS

UNICOMPARTMENTAL KNEE PROSTHESIS. INDICATIONS. N. CONFALONIERI ORTHOPAEDIC DEPARTMENT ORTHOPAEDIC AND TRAUMATOLOGIC CENTER MILAN. -Patients selection -Operative techniques -Prosthetic design -Few complications. INDICATIONS: Unicomp. arthrosis Intact controlateral compartment

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UNICOMPARTMENTAL KNEE PROSTHESIS

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  1. UNICOMPARTMENTAL KNEE PROSTHESIS INDICATIONS

  2. N. CONFALONIERIORTHOPAEDIC DEPARTMENTORTHOPAEDIC AND TRAUMATOLOGIC CENTERMILAN

  3. -Patients selection-Operative techniques-Prosthetic design-Few complications

  4. INDICATIONS: Unicomp. arthrosis Intact controlateral compartment (Ist and 2d Ahlback’s classes) Asimptomatic patellofemoral joint ROM > 90° Axial deformity < 15°

  5. INDICATIONS: Flexion deformity < 5° Age > 60 y. Body Weight: < 82 kg No joint laxity (intact ACL) No pain at rest No systemic disorders (reumathoid arthr., hemophilia)

  6. UNICOMPARTMENTAL KNEE PROSTHESIS AGE ?

  7. UNICOMPARTMENTAL KNEE PROSTHESIS RELATIVE CONCEPT !

  8. UNICOMPARTMENTAL KNEE PROSTHESIS PATELLOFEMORAL JOINT ?

  9. UNICOMPARTMENTAL KNEE PROSTHESIS RARELY INTACT !

  10. UNICOMPARTMENTAL KNEE PROSTHESIS JOINT STIFFNESS ?

  11. UNICOMPARTMENTAL KNEE PROSTHESIS TO BE EVALUATED IN EACH CASE

  12. UNICOMPARTMENTAL KNEE PROSTHESIS JOINT LAXITY ?

  13. UNICOMPARTMENTAL KNEE PROSTHESIS ACCORDING TO AGE AND ACTIVITY

  14. UNICOMPARTMENTAL KNEE PROSTHESIS BODY WEIGHT ?

  15. UNICOMPARTMENTAL KNEE PROSTHESIS RELATIVE CONCEPT !

  16. UNICOMPARTMENTAL KNEE PROSTHESIS CONTROINDICATIONS: Flexion deformity > 15° Osteoporosis + Obesity + Deformity Technical errors: - polyetylene < 6 mm - ipercorrection - hip disease

  17. UNICOMPARTMENTAL KNEE PROSTHESIS CONTROINDICATIONS: Reumathoid arthr., Hemophilia Serious joint laxity Serious varus deformity Serious symptomatic patello-femoral arthritis

  18. -Patients selection-Operative techniques-Prosthetic design-Few complications

  19. -Patients selection-Operative techniques-Prosthetic design-Few complications

  20. -Patients selection-Operative techniques-Prosthetic design-Few complications

  21. UNICOMPARTMENTAL KNEE PROSTHESIS 1988 - 2000: 211 cases COMPLICATIONS • DVT: 4 (1.8%) • CONDILE FRACTURES: 1 tibial (0.4%) • 1 femoral (0.4%) • SUPERFICIAL INFECTIONS: 6 (2.8%) • SYNOVITIS: 3 (1.1%)

  22. Scala sensorizzata

  23. Angolo Momento Potenza Descent Uni fixed bearing(K,1148) Normal dynamic and videomatic (cynematic)

  24. CONCLUSIONSMost patients with UKA walked with a more normal gait pattern than patients with TKA.Some worrisome radiographic findings will require careful long term evalutation to assess UKA longevity and utility.J.O. Galante (1996)

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