UNICOMPARTMENTAL KNEE PROSTHESIS

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UNICOMPARTMENTAL KNEE PROSTHESIS

• INDICATIONS

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N. CONFALONIERIORTHOPAEDIC DEPARTMENT
ORTHOPAEDIC AND TRAUMATOLOGIC CENTERMILAN
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-Patients selection-Operative techniques-Prosthe
tic design-Few complications
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• INDICATIONS
• Unicomp. arthrosis
• Intact controlateral compartment
• (Ist and 2d Ahlbacks classes)
• Asimptomatic patellofemoral joint
• ROM gt 90
• Axial deformity lt 15

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

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UNICOMPARTMENTAL KNEE PROSTHESIS

• AGE ?

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UNICOMPARTMENTAL KNEE PROSTHESIS

• RELATIVE CONCEPT !

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UNICOMPARTMENTAL KNEE PROSTHESIS

• PATELLOFEMORAL JOINT ?

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UNICOMPARTMENTAL KNEE PROSTHESIS

• RARELY INTACT !

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UNICOMPARTMENTAL KNEE PROSTHESIS

• JOINT STIFFNESS ?

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UNICOMPARTMENTAL KNEE PROSTHESIS

• TO BE EVALUATED IN EACH CASE

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UNICOMPARTMENTAL KNEE PROSTHESIS

• JOINT LAXITY ?

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UNICOMPARTMENTAL KNEE PROSTHESIS

• ACCORDING TO AGE AND ACTIVITY

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UNICOMPARTMENTAL KNEE PROSTHESIS

• BODY WEIGHT ?

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UNICOMPARTMENTAL KNEE PROSTHESIS

• RELATIVE CONCEPT !

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UNICOMPARTMENTAL KNEE PROSTHESIS

• CONTROINDICATIONS
• Flexion deformity gt 15
• Osteoporosis Obesity Deformity
• Technical errors - polyetylene lt 6 mm
• - ipercorrection
• - hip disease

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UNICOMPARTMENTAL KNEE PROSTHESIS

• CONTROINDICATIONS
• Reumathoid arthr., Hemophilia
• Serious joint laxity
• Serious varus deformity
• Serious symptomatic patello-femoral
• arthritis

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-Patients selection-Operative techniques-Prosthe
tic design-Few complications
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-Patients selection-Operative techniques-Prosthe
tic design-Few complications
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-Patients selection-Operative techniques-Prosthe
tic design-Few complications
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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)

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Scala sensorizzata
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Descent Uni fixed bearing (K,1148) Normal dynamic
and videomatic (cynematic)
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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)