Advanced Knee Preservation

Knee-preserving options for appropriately selected patients.

Dr CR Oosthuizen has a particular clinical and academic interest in Unicompartmental Knee Arthroplasty and the KOGS grading system. Where indicated, the procedure is intended to preserve unaffected portions of the knee in appropriately selected patients.

Request an AppointmentRead the UKA protocolTry the Knee Check
JSH
LWH
Consulting at Johannesburg Surgical Hospital
& Life Wilgeheuwel Hospital
Two smiling older adults hiking together on a sunlit forest trail
Step 1 of 4Candidacy Assessment

Where is your knee pain primarily located?

or skip
Portrait of Dr Christiaan Rudolf Oosthuizen, Orthopaedic Surgeon

Dr Christiaan Rudolf OosthuizenMBChB (Stellenbosch) · MMed Orthopaedics (Pretoria) · PhD (Wits)

The surgeon

Meet your surgeon.

Dr Christiaan Rudolf Oosthuizen is an Orthopaedic Surgeon with more than 35 years of experience in private practice. His work focuses on knee, hip and spinal surgery, with a particular interest in contemporary partial knee replacement and the KOGS grading system.

Read full biography
Diagnostic framework

The KOGS Grading System.

The Knee Osteoarthritis Grading System (KOGS) is the diagnostic framework Dr Oosthuizen uses to determine the precise threshold for surgical intervention — and to identify the patients who will benefit most from a UKA rather than a full replacement.

Stage 01

Early wear — non-operative management, biomechanical correction and orthobiologics.

Stage 02

Focal unicompartmental wear — the primary candidate window for UKA.

Stage 03

Multi-compartment progression — strategic assessment for total knee or staged options.

Stage 04

End-stage disease with deformity — total knee arthroplasty with full kinematic planning.

Anatomical illustration of a knee joint with isolated wear highlighted
Dr CR Oosthuizen performing unicompartmental knee arthroplasty in theatre at Johannesburg Surgical Hospital
In theatre

Johannesburg Surgical Hospital

Procedure focus

Unicompartmental Knee Arthroplasty — the resurfacing solution.

For appropriately selected patients with single-compartment wear, the UKA preserves bone, ligaments and natural knee kinematics — with a smaller incision and a markedly faster return to function than a total replacement.

See how UKA compares to TKA
Clinical & academic background

Decades of orthopaedic practice and ongoing research in knee arthroplasty.

Dr Oosthuizen's practice combines private clinical work with peer-reviewed academic contributions on unicompartmental knee arthroplasty methodology and outcomes.

Academic Footprint

  • 30+Years in private orthopaedic practice.
  • 20+Peer-reviewed publications on UKA methodology and outcomes.
  • 1Authored textbook: The UKA.
Lead clinical coordinator

Begin your assessment.

Request a consultation

Submit your diagnostic details for a preliminary surgical review by Dr Oosthuizen's clinical team.

Dr Oosthuizen consults Mon & Thu at JSH and Tue at Wilgeheuwel (mornings only). Please suggest a date within these sessions.

Your details are handled in line with POPIA. This form is not for medical emergencies — call 10177 instead.

Consulting: Mon · Tue · Thu (AM)