PCL Reconstruction Surgery (Posterior Cruciate Ligament)

Most isolated grade I and grade II tears respond well to a structured non-operative programme; surgery becomes relevant when the knee stays unstable despite that, or when the tear is high-grade, combined with other damage, or involves an acute avulsion.

Non-operative care — protection, range-of-motion work and quadriceps strengthening over about three months — is the recommended first step for isolated grade I and II tears, and it works for most people. Surgery is considered for a knee that remains unstable after that trial, a high-grade tear with persistent laxity, a tear combined with other ligament or meniscal damage, or a pulled-off bone fragment. A complete tear in an active person doesn’t automatically mean surgery — the grade and the response to non-operative treatment guide the decision together.

Sooner rather than later if the knee keeps giving way backward, the injury was high-energy, more than one ligament is suspected, or there’s significant swelling or difficulty bearing weight.

A mild ache can reasonably be watched for a few days, but persistent instability, a high-energy mechanism (such as a car accident or a hard sporting collision), suspected multi-ligament involvement, or significant swelling are all reasons to be assessed properly rather than waiting it out. This page is general information, not an emergency service.

The operation and hospital stay vary from person to person, depending on what is being addressed — this is discussed at consultation.

Operative time and length of stay depend on what is being addressed, the complexity of the reconstruction, and your surgeon’s assessment; your surgeon will confirm what applies to your specific plan, particularly if other structures are being addressed at the same time.

The choice is between your own tissue and donor tissue, decided together with your surgeon — the PCL-specific evidence shows the two are broadly equivalent, so there’s no single “best” option to simply pick.

Autograft options (hamstring, kneecap tendon, thigh tendon) and allograft (donor) options are both used, and the evidence shows no meaningful difference in function, stability or the chance of needing further surgery between them. Kneecap-tendon grafts can cause some ongoing front-of-knee pain in a proportion of patients regardless of source. Some general ligament evidence suggests donor tissue may fail slightly more often in young, active people, but PCL-specific studies show broadly equivalent outcomes — the decision is made with your surgeon based on your circumstances, not a fixed rule.

About 4 in 10 people return to their previous level of sport; most return to some form of sport. Recovery is criteria-based, typically around 9 to 12 months.

Function generally improves substantially after reconstruction, but return to your exact previous competitive level is more modest than many people expect — roughly 4 in 10, based on the pooled evidence. The broader picture (returning to some level of sport) is more encouraging. Timing follows your knee’s progress against strength, stability and movement criteria rather than a fixed calendar date.

A cost estimate for surgery can be given only after a consultation and assessment, once a surgical plan has been developed — see the cost section below.

Every case is different, and a meaningful estimate depends on the specific plan for your knee, including whether other structures need addressing at the same time. The clinic provides a written estimate once a plan is in place, which can also help with pre-authorisation from your insurer where applicable.

A knee that stays unstable can, over many years, contribute to joint wear — but the size of that risk varies widely across the evidence, and there’s no single figure that applies to everyone.

Across the studies, a significant minority of people — estimates range from around 1 in 10 to as many as half, depending on the study — go on to develop arthritis, mainly in the medial and kneecap compartments of the knee, over many years. That’s a genuinely wide range, reflecting real uncertainty in the evidence rather than a precise prediction. Not everyone with an untreated PCL tear develops this, and the strongest single long-term study found a more modest rate of moderate-to-severe arthritis. This is a reason to be assessed and monitored, not a reason to assume surgery is automatically required.

Yes — a combined injury (most often involving the ACL, MCL or meniscus) is one of the main reasons surgery is considered, and multiple structures can be addressed in the same operation.

PCL tears are rarely isolated, and when other ligaments or the meniscus are also torn, combined reconstruction is a recognised approach. This is more involved than an isolated PCL procedure, with its own considerations for technique and recovery — your surgeon will discuss what applies to your specific combination of injuries. See the ACL and MCL pages for those ligaments individually.

The ligaments sit at opposite ends of the knee’s centre and behave differently: the PCL often heals without surgery, unlike most ACL tears, and after surgery the PCL more often leaves some residual looseness than the ACL does.

The ACL (front) and PCL (back) cross in the middle of the knee and resist opposite movements. The PCL has a genuine capacity to heal, which is why many PCL tears are managed without surgery — a path less commonly available for a complete ACL tear. When surgery is needed for either, reconstruction reliably improves function, but PCL reconstruction more often leaves some residual laxity than ACL reconstruction does — the two shouldn’t be judged by the same “success rate” yardstick.

Any imaging you already have (MRI or X-ray discs or reports), a list of your current symptoms and how the injury happened, and details of any other treatment already tried.

Bringing existing scans avoids repeat imaging where possible, and a clear description of the mechanism of injury and your symptom timeline helps the assessment move efficiently. If you’ve already tried bracing or physiotherapy, details of what was done and how the knee responded are useful too.

Yes — surgery can benefit appropriately selected older or less active patients when the indications are met, though the decision weighs the same factors as for anyone else.

Age or activity level alone doesn’t rule surgery in or out. Appropriately selected older, moderately active patients can benefit from reconstruction when the knee stays unstable or the injury is combined with other damage — the decision is individual, based on symptoms, demands and goals rather than a number tied to age.

“Knee specialist” is an everyday phrase many people use when looking for a doctor for a knee problem. In Singapore, doctors may only use the specialist titles accredited by the Specialist Accreditation Board (SAB) of the Ministry of Health (MOH). Orthopaedic Surgery is an accredited specialty; the knee is an area of clinical interest within it. “Knee specialist” is not a separate specialist registration; however, individual orthopaedic surgeons may have particular clinical interests within their specialty. The doctor most people have in mind is an orthopaedic surgeon whose practice focuses on knee conditions. Dr Sean Leo is registered as a specialist in Orthopaedic Surgery, and his clinical interest is the knee. He completed a postgraduate knee fellowship programme in Sydney, Australia, at the Royal North Shore Hospital under Dr Myles Coolican and Dr David Parker from 2009 to 2010. Dr Leo was also Director of the Hip and Knee Service at Changi General Hospital from 2014 to 2018.