Procedures and Treatments

Mr Platt offers a wide range of surgical procedures to help patients with hip and knee pain.

Mako® Robotic Surgery

Mr Platt is Mako robotic surgery certified, but prior to certification, he was involved in robotic surgery at its infancy during his time working at Charing Cross Hospital. As robotic surgery has evolved, through his career he has had experience of various robotic surgery systems: Acrobot, Stanmore Instruments, and Stryker Mako. 


Robotic surgery achieves a higher degree of accuracy than standard instruments and jigs, and provides a large amount of information during surgery which allows Mr Platt to position the joint replacement in the optimal, personalised alignment for the patient. This can translate into lower post-operative pain levels, and faster recovery after surgery.


He performs Mako partial knee replacement, Mako total knee replacement and Mako total hip replacement at Woking Nuffield Hospital, Princess Margaret Hospital and Guildford Nuffield Hospital.


More information about robotic surgery can be found at these external links:


Mako total knee replacement

Mako partial knee replacement

Mako Robotic Arm Assisted Total Hip


Mako surgery in Woking

Mako surgery at Princess Margaret Hospital


Partial knee replacement

Also known as unicondylar knee replacement, or simply half knee replacement, Mr Platt has considerable experience performing partial knee replacements - he performs roughly 2.5 times the national average number of procedures.


Approximately 70% of patients with knee arthritis suffer medial compartment arthritis as most weight is borne through the inner (medial) part of the knee. Less commonly, the kneecap or lateral (outer) part of the knee may be affected by isolated arthritis.


Provided the remainder of the knee is suitably intact, a partial knee replacement replaces only the worn part of the knee, and works in harmony with the remainder of the patient's knee. In this way, this type of replacement usually feels more natural and is better functioning than a total knee replacement.


Mr Platt can perform this type of surgery with the Oxford knee system, or using the Mako robot, both with excellent results, as this type of replacement outperforms a total knee replacement in function and patient satisfaction, yet also will last for 15-20 years.


Should it wear out, subsequent surgery to revise to a total knee replacement is usually straightforward, and can also be performed by either standard or Mako robotic surgery.

Patellar realignment surgery

Also known as tibial tubercle osteotomy. Patients with front of knee pain or kneecap instability may benefit from this procedure. By moving the patellar tendon attachment on the tibia either inwards (medially) or downwards (distally) - it relocates the kneecap to a more favourable position to reduce the pain from arthritis, improve stability, or both.

Total knee replacement

Also known as full knee replacement Mr Platt has performed a large number of these procedures.


Mr Platt reserves this surgery for patients who are unsuitable for partial knee replacement, which may be due to the pattern of wear in the knee being too extensive, the knee alignment being outside the recommended limits, or if the ligaments in the knee are not functioning correctly.


Mr Platt can perform this type of surgery with the Triathlon, Saiph or Vanguard knee systems using standard instrumentation, or by using the Mako robot, with excellent results.


A total knee replacement lasts a long time, with 83% of replacements lasting 25 years.


Other procedures