The BJJ Game for Bad Knees: What to Play and What to Cut

Two years ago I stopped asking whether my knee could survive a given position and started asking a better question: if I were building a game from nothing today, knowing exactly what this joint will and will not tolerate, what would I actually pick? The answer looked very little like the game I had been dragging along and apologising for.

This page is that game plan. The day-to-day management side of a cranky knee — how to warm up, when to tap, taping, sleeves, how to handle the week after a bad round — is a separate job and it already lives on training BJJ with bad knees. Read that one for the system. Read this one for the positions, the passes and the movements you should be building on top of it.

A bad knee narrows your game far less than you think

The mistake almost everyone makes, me included for about a year, is treating this as a list of banned techniques. Somebody tells you no closed guard, no butterfly, no takedowns, and you end up with four moves and no jiu-jitsu.

Knees do not object to technique names. They object to three specific loads:

• Deep flexion under weight. Heel to backside with someone stacking you on top of it.
• Rotation with the foot planted. The femur turns, the tibia does not, and the tissue in between takes the difference.
• Sudden extension against resistance. The leg getting straightened faster and further than you chose.

Sort every position you know into those three buckets and the list of things you have to give up gets short. Most of jiu-jitsu is available. It is a handful of specific shapes that are expensive, and they are not the ones people usually name.

Bottom game: knee shield first, closed guard second

If you only build one guard, build the knee shield. Your bottom leg lies along the mat, your top shin is the barrier, and the knee itself sits somewhere near a right angle with no weight driving it further. The shin absorbs the pressure and the joint is a passenger. I go through the mechanics in detail in why half guard works so well after 40, and it is not a coincidence that the most knee-friendly guard is also the one that most rewards patience.

Closed guard is second, and it is second for a reason that has nothing to do with knees. The joint is safe there — legs crossed, no rotation, no plant — but a partner posturing hard against a closed guard runs his weight through your lumbar spine instead. You are moving the bill, not cancelling it. Worth knowing before you make it your whole game, and worth reading alongside BJJ and lower back pain if your back is already talking to you. The full breakdown is in closed guard after 40.

Butterfly is conditional. It is genuinely cheap on the knees while you are seated and upright, and it stops being cheap the moment the exit goes badly and you end up with a hook trapped under a driving partner. If you want it, run the hip screen in butterfly guard for older grapplers first and be honest about the answer.

What I would leave alone from the bottom: spider guard once someone starts pressuring in, because your foot is stuck in a bicep and the pressure comes through a straight-ish leg you cannot retract on your own terms. Deep half, because the knee lives under a large person at a flexed angle for as long as the position lasts. And single-leg X against anyone who likes to drive forward, for exactly the reason spider guard is out.

Top game: pass around the legs, not through them

The passing half of this is easier than the guard half, because the two passes that suit a bad knee best are also two of the better passes going. The leg drag puts you outside the legs with your weight on your own base and nothing folded. The body lock pass gets you connected at the hips and walks the position home. Neither one asks a bent knee to travel across the mat carrying you and a partner. I rank both, and explain the filters, in the best guard passes after 40.

The knee cut is the one to think hard about. It is a superb pass and it is the single most common way an older grappler quietly grinds a knee down: the cutting leg is flexed, weighted, and dragging sideways across a mat that grips, three times a week, for years. I have not stopped doing it entirely. I have stopped doing it as my answer to everything, which is a different and much more sustainable decision.

If pressure passing is where you naturally live, the style itself is fine — it is weight and connection rather than speed, which is exactly what an older body has more of. Read pressure passing for older grapplers for how to build it, and just swap the knee cut for the body lock as your primary finish.

Knee-on-belly is worth a sentence because people assume it is out. The posting knee is not the problem. The entry and the exit are, because both involve turning over a foot that is planted. Step in and step out deliberately rather than spinning through, and it is an available position.

On padding: whether you want a sleeve, a pad or a brace is a separate decision from your game, and it depends on what you are actually protecting against. Knee sleeves vs knee braces covers the compression-versus-support question, and knee pads covers impact, which is the one that matters most if you are on top a lot.

Fix four movements before you fix four positions

This is the part I got wrong for the longest, and it is the part nobody talks about. I spent months curating positions while doing the same four movements badly a hundred times a session. Positions are what you notice. Movements are what accumulate.

• Shrimping. Push off a flat foot with the knee tracking over the toes. Most people over 40 shrimp off the ball of the foot with the knee falling inward, which is rotation under load repeated forty times in a warm-up. Fixing this alone changed more for me than any guard choice.
• Standing up. The technical stand-up has two versions in most gyms. One posts the hand and the outside foot and lifts. The other drags the shin and the kneecap across the mat on the way up. Learn the first one properly, in isolation, slowly.
• Sprawling. Land on your toes and chest. Landing knees-first is the loudest thing in the room and it is a direct impact on a joint that is already annoyed with you.
• Getting off turtle. The scramble out of turtle is a foot-planted, hip-rotating, someone-is-on-you situation, which is all three of the bad loads at once. Slow it down or take the position and work from there. This is the movement most worth being unglamorous about.

Give these a few minutes at the start of a session for a month. It is boring and it is the highest-return thing on this page.

Submissions: build up, and be careful about the legs

Your finishing game barely changes, which is a relief. Collar chokes, the kimura, straight armlocks and the back are all upper-body work and none of them care what your knee thinks. Best submissions for older grapplers covers the selection in full.

Two adjustments. The triangle is fine to finish and expensive to hold badly, because a posturing partner in a locked triangle loads the back and the hips more than people expect. And leg entanglements are a genuine decision rather than a rule. You should absolutely learn to defend them; you do not have to spend rounds inside them. The mechanism is what makes me cautious rather than any injury figure I can point you at: with a heel hook, the damage can arrive before the pain does, which makes tapping in time an unreliable skill to bet a knee on. Straight ankle locks and knee-bar defence are worth your time — see leg locks in jiu-jitsu — and if your gym rolls heavy heel hooks with strangers, sitting some of those rounds out is a legitimate game plan, not a cop-out.

Standing is the shortest section here

Standing work is not banned and it is not free either. What I settled on: a very small number of entries that end with me on top without landing knee-first, plus honest defence. The ankle pick and the collar drag both do that. Anything that finishes with me driving through a partner and landing on a bent knee, I left behind. Best takedowns for older grapplers ranks the options by what the landing costs.

The other half of standing is defence, and that is where knees actually get hurt — sprawling late, or getting hit with a low single while your weight is already on one leg. If you are going to spend time standing, spend more of it on the sprawl than on the entries.

What this game costs you, honestly

You lose inversions and berimbolo entirely. You lose most of the fast scrambling game, and with it a certain amount of fun. You will get passed by athletic twenty-somethings in ways you could have prevented two years ago by simply exploding out of it. Those are real losses and pretending otherwise would be dishonest.

What you get is a game that still exists in ten years, and one that improves rather than degrades, because everything in it runs on timing, grips and position rather than on tissue you are steadily spending. That trade looks worse at 42 than it does at 52. Ask anyone still training at 52.

If you have not settled on an overall style yet, this page is the knee-constrained version of a bigger question. The best BJJ game for older grapplers works through the four archetypes that hold up after 35 without assuming a specific joint is the problem, and old man jiu-jitsu covers the principles underneath all of them. Both sit under the wider BJJ after 40 guide.

When to stop adapting and get it looked at

Adapting your game is for a knee that aches, stiffens and gets grumpy about certain shapes. It is not for a knee that locks, gives way, swells after every session, or has not changed at all in three weeks. Numbness or a joint that will not fully straighten is a same-week appointment, not a training modification.

I am a purple belt with opinions and a training history, not a clinician. Nothing on this page treats anything, and none of it is a substitute for someone who can actually examine the joint. The broader prevention system, which is worth having in place whether or not your knees are the issue, is in how to train BJJ after 40 without getting injured.

FAQ

Which guard is easiest on the knees?

Knee shield half guard. The bottom leg rests along the mat and the top shin takes the pressure, so the joint sits near a right angle with nothing driving it deeper and nothing rotating it. Closed guard is a close second for the knee itself, though it moves the load onto your lower back instead.

Should I wear a sleeve or a brace while I rebuild my game?

They do different jobs. A sleeve gives compression, warmth and a bit of feedback about where the joint is. A hinged brace resists sideways movement and is a bigger decision worth making with a professional rather than off a blog. Neither one makes a position safe that was unsafe without it.

How long does it take to switch to a knee friendly game?

About three months before it feels like your game rather than a list of restrictions, based on my own switch and on watching training partners my age do the same thing. The movement work pays off faster, often inside a few weeks. That is what has been true for me, not a research finding.

Is no gi harder on the knees than gi?

For most people yes, for two reasons. Scrambles are faster and more frequent without grips to slow them down, and leg entanglements are far more common in no gi rooms. Neither of those rules it out. It does mean choosing training partners with more care and being willing to sit out the rounds that are going to be a race.

Where to start

Pick one guard and one pass from this page, spend a month on the four movements, and leave everything else alone until that feels automatic. If you are not sure which archetype fits you, the two-minute quiz at What BJJ Game Should I Play? will point you at one, and you can then apply the knee filters above to whatever it gives you.