PHYSICA ZUK SURGICAL TECHNIQUE Introduction, Indications and Contraindications
INTRODUCTION Unicompartmental knee arthroplasty (UKA) has been shown to be an effective treatment for isolated osteoarthritis affecting the medial or lateral compartment. The new Physica ZUK System instruments are designed to provide accurate and reproducible results. The goals of the surgical procedure are to:
INDICATIONS AND CONTRAINDICATIONS Indications: • Painful and/or disabling knee joints due to osteoarthritis or traumatic arthritis; • Previous tibial condyle or plateau fractures with loss of anatomy or function; • Varus or valgus deformities; • Failed corrective osteotomy procedures or previous unicompartimental arthroplasty; when only one compartment of the knee is involved. The Physica ZUK Unicompartmental Knee System is designed for use when load bearing ROM is expected to be less than or equal to 155°. These devices are indicated for cemented use only.
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Facilitate the patient’s recovery;
Provide less pain;
Provide earlier mobilization; Provide shorter hospital stay.
This instrument allows the surgeon to operate without everting the patella.
Contraindications include:
This surgical technique is written for a medial compartment UKA. Many of the same principles can be applied to the lateral compartment but it may be necessary to extend the incision a few centimeters given the proximity of the patella to the lateral condyle.
• Previous history of infection in the affected joint and/or local/systemic infection that may affect the prosthetic joint; • Insufficient bone stock on femoral or tibial surfaces; • Skeletal immaturity; • Neuropathic arthropathy; • Rheumatoid arthritis; • Obesity 1 ; • Varus/valgus deformities greater than 15°; • Chondrocalcinosis; • Osteoporosis; • Damage to the articular cartilage of the opposite compartment; • Inflammatory synovitis; • Eburnated bone in the patellofemoral joint.
1 According to the definition of the World Health Organization (WHO), Body Mass Index (MBI) greater than or equal to 30.
4 Surgical Technique PHYSICA ZUK
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