Question

Any help appreciated!

Describe the posterior cruciate ligament substituting designs and posterior cruciate ligament retaining designs. And list the pros and cons of each.

Answer 1

Posterior cruciate ligament substituting designs is a total knee replacement design and prosthesis which will be used for total knee arthroplasty. The posterior cruciate ligament retention and substitution need long-term follow-up..mostly there critical outcome of successful total knee arthroplasty like survival,range of motion and flexion and it's scores shows quality of life and morbidity of the Patient..for the Patient those who use with non- functional posterior cruciate ligament they can use only PCLS design..some of the outcomes successful knee arthroplasty patient have stability,the ability to climb stairs.. posterior cruciate ligament retention during total knee arthroplasty provides better outcomes like joint stability, more normal gait, ROM, prosthetic duration. Adequate functioning of PCL should not be too tight or too loosen after surgery..To aim correct PCL function after cruciate- retaining high - flexion TKA need femoral rollback than conventional TKA..in market with this both designs will not remain with same results, sometime it will be dominated one another..most of the studies proven PCLS has better results than PCLR..High quality, randomized controlled studies to be revealed in the aspects of stair - climbing, stability, proprioception and pain relief..

PCLS:

Pros and cons;

Posterior tilting of the tibial component by 6-10° in posterior cruciate ligament substituting is a common practice it improves ROM and prevent loosening of the component..

Minimize wear high flexion design were conceived to increase knee flexion after surgery..

PCLR:

Pros and cons:

WOMAC assessment (western ontario and MC master universities osteoarthritis index) used..pros and cons and implantation depends on orthopaedic surgeon experience and prosthesis for cohort of patient with either one specific design can be used..