Training around a bad knee: what to tell your coach and what to expect
I remember the first session back after my knee flared up — standing at the squat rack, bar unloaded, genuinely unsure whether stepping under it was brave or foolish. That moment of hesitation is something I've since watched in dozens of members, and it always carries the same mixture of frustration and hope. Coming back to training with a compromised knee is not a single decision; it's a series of small, accumulating ones, made in conversation with a coach who needs to know far more than "my knee hurts." The good news is that most knee issues, from mild patellar tendinopathy to post-surgical rehab, do not require you to stop lifting entirely — they require you to lift differently, at least for a while. This article is a practical map of that process: what information actually matters when you sit down with a coach, which movements typically need to be scaled and why, and what a sensible progression looks like over the weeks that follow.
What to tell your coach before you touch a single piece of equipment
The most important thing you can bring into that first conversation is specificity, and specificity means more than a diagnosis. A diagnosis — 'patellofemoral pain syndrome,' 'meniscus tear,' 'IT band irritation' — tells a coach what the structure is but not how it behaves under load. What your coach actually needs is a functional picture: at what point in a squat do you feel discomfort, whether that discomfort is a dull ache or a sharp catch, whether it appears immediately or builds over several repetitions, and crucially, how your knee feels the following morning after a session. That next-day response is one of the most useful indicators a coach has for calibrating load. If you trained on Tuesday and woke up Wednesday with significantly more stiffness or swelling than the day before, that is concrete feedback — far more useful than any real-time pain rating during the set.
You should also bring documentation if you have it. A physiotherapy discharge summary, a specialist's letter, an imaging report — even a handwritten note from your physio about which ranges of motion are currently off-limits. In Australia, most people returning from a knee injury will have passed through a GP referral and at least a few sessions with a physio under a chronic disease management plan or private health cover, so there's often a paper trail worth retrieving. If your physio gave you a specific range-of-motion restriction, such as 'avoid loaded knee flexion beyond 90 degrees for six weeks,' that is an exact prescription your coach can program around. Vague self-reporting without that context forces your coach to be conservative across the board, which often means slower progress than is actually necessary.
Understanding which movements typically need scaling, and the logic behind each change
The movements most commonly scaled for knee issues fall into two broad categories: those that load the knee through a deep range of flexion, and those that create significant shear force across the joint. Deep back squats, full-depth front squats, Bulgarian split squats, and heavy lunges all belong to the first category. The scaling here is usually a reduction in depth — a box squat to a height that keeps the knee above or at 90 degrees, for instance — combined with a reduction in total load until the reduced range is comfortable and stable. This is not a permanent arrangement; it is a temporary ramp, and the depth and load both increase incrementally as tolerance improves.
The second category, shear-dominant movements, includes exercises like the leg extension machine and, to a lesser extent, any loaded step-up where the shin travels significantly forward of the ankle. These tend to create anterior stress on the patellar tendon and are often the first things a physio will flag. What takes members by surprise is that deadlifts and Romanian deadlifts are usually preserved fairly well in knee rehab, because hip-dominant pulling patterns do not ask the knee to do the primary stabilising work. Trap bar deadlifts in particular often remain trainable at relatively normal loads even when squatting is heavily restricted — a useful fact when a member is worried about losing lower-body strength entirely during a rehab phase.
Upper body training almost never needs to change at all, which is worth saying plainly because some people assume a knee injury means a general deload across the whole program. Pressing, pulling, row variations, and carries can generally continue at full intensity, and maintaining that stimulus matters for morale as much as for physique. Your coach should be building you a program that still feels like training, not an extended warm-up.
A knee restriction reshapes a program — it doesn't erase it.
The practical shape of your first four to six weeks back
A sensible return-to-training block for someone with an active knee issue typically looks like three sessions per week, with each lower-body session built around one primary knee-dominant movement scaled to a comfortable range, one hip-dominant movement at or near full load, and a unilateral accessory movement chosen to address any visible imbalance between legs. The total lower-body volume in week one will be lower than what you were doing before — perhaps four to six working sets where you might previously have done ten to fourteen — and that reduction is intentional. It creates room for your body to adapt without accumulating the kind of irritation that sets recovery back.
The progression from week to week should be measurable and documented. This is where a coach earns their fee: tracking not just what you lifted but how your knee responded in the 24 hours following each session, and using that information to decide whether to add depth, add load, or add a set. A common mistake people make when returning from injury on their own is progressing both load and range simultaneously, which doubles the new stress on the joint and makes it impossible to identify which variable caused a flare-up. Change one thing at a time, record what happened, and make the next decision based on actual data rather than optimism.
Red flags that mean you pause and red flags that mean you stop and call your physio
There is a meaningful difference between the muscle fatigue and mild joint awareness that is normal in any return-to-training phase, and the warning signs that indicate you are aggravating the underlying issue. Normal: a feeling of mild achiness in the knee during the last few sets of a session that fades within an hour of finishing. Not normal: sharp pain during a specific movement, any catching or locking sensation in the joint, swelling that appears during or after a session, or stiffness the following morning that is noticeably worse than it was the day you trained. If any of those appear, the right response is to drop that movement from the session, note the exact circumstances in your training log, and flag it with your coach immediately.
Stopping entirely and returning to your physiotherapist is warranted if swelling persists for more than 48 hours after a session, if you develop a new pattern of pain that differs from what your physio originally assessed, or if any movement causes a sharp, acute pain rather than a dull, positional ache. This is not failure — it is data. Australian physiotherapists who work with active populations expect to receive updates from clients who are back in a gym setting, and a brief telehealth appointment to review what happened is almost always more productive than guessing. The goal is not to avoid seeing your physio; the goal is to be specific enough about what triggered the response that your physio can actually update their guidance.
How to think about the longer arc — returning to full training without losing the thread
Most people with a manageable knee issue who train consistently and honestly with a coach are able to return to something close to their pre-injury program within eight to sixteen weeks, depending on the nature and severity of the problem. That range feels large, and it is, because the variables are significant — how long the issue had been present before they sought help, whether they had a period of complete rest before returning, how well they slept and ate during the recovery phase, and whether they had any residual compensatory patterns in their movement that a coach needed to address alongside the primary injury. The timeline matters less than the trajectory. If every two weeks you can do something you couldn't do two weeks prior — a little more depth, a little more load, a unilateral movement that was previously off the table — you are moving in the right direction, and that direction is what matters.
The thing I would most want someone to take away from this is that the conservatism of a good rehab-informed training program is not timidity. The reduced volume in week one, the box squat instead of the free squat, the trap bar instead of the barbell — these are precise tools, not concessions. They keep you in the gym, keep you building strength in the structures around the knee, and keep the adaptation process moving while the irritated tissue has the relative rest it needs to recover. The members I've seen return to full, heavy training most successfully are almost always the ones who resisted the urge to test their limits in weeks two and three, who kept meticulous notes, and who treated every coaching session as a chance to give and receive information rather than simply to work hard.
Returning from a knee issue is genuinely one of the more teachable experiences in a training life. It forces you to pay attention to movement quality in a way that most healthy trainees never do, and the habits built during that phase — documenting responses, communicating clearly with a coach, progressing one variable at a time — tend to make people more durable athletes in the long run than they were before the injury.
If you are navigating a knee issue and want to talk through what training could look like right now, we are always happy to have that conversation before you book anything formal. Reach out and tell us where you're at.