Most meniscus tears do not automatically require surgery
Meniscus tears are common, particularly with increasing age, and many are asymptomatic or incidental findings. For degenerative presentations, physiotherapy should generally be the first-line approach rather than arthroscopy.
The goal is also to preserve meniscal tissue wherever possible. Meniscectomy removes tissue that contributes to load distribution and joint protection, and loss of meniscal tissue is associated with accelerated degenerative change.
Surgical management becomes more relevant for specific presentations such as bucket-handle tears, root tears, larger unstable tears or a symptomatic locked knee. When repair is possible, preservation is generally preferred over meniscectomy.
MRI findings should also be interpreted carefully. Particularly in older adults, structural changes on imaging may not correspond with the patient's symptoms. Management should therefore be driven by the overall clinical presentation rather than an MRI finding in isolation.
Knee assessment should combine structure and function
A knee examination begins before the patient reaches the treatment table.
Gait, protective postures, varus or valgus alignment, muscle bulk and movement asymmetry can already provide useful information.
Assessment can then consider:
joint effusion
quadriceps activation
knee flexion and extension
medial and lateral joint-line tenderness
ligament integrity
patellofemoral structures
meniscal provocation tests
functional capacity
Tests such as McMurray, Thessaly and Apley can contribute to the assessment of meniscal pathology, but none should be treated as independently diagnostic.
A negative McMurray test, for example, does not exclude a meniscal injury. Combining history, joint-line tenderness, multiple tests and functional findings provides a stronger clinical picture.
Following trauma, fracture should also be excluded before focusing exclusively on soft tissues, with the Ottawa Knee Rule providing a useful screening framework.
An ACL rupture does not automatically mean reconstruction
One of the more interesting distinctions in an ACL-deficient knee is between copers, non-copers and adapters.
A coper is able to compensate for the absent ACL sufficiently to return to demanding activity without recurrent episodes of giving way.
A non-coper continues to experience instability, sometimes even during normal daily activities, and is more likely to require reconstruction.
An adapter avoids the activities that expose instability. They may appear to function well during daily life simply because they have stopped cutting, pivoting, jumping or participating in their previous sport.
This third group can easily be overlooked.
A patient saying that their knee “doesn't give way anymore” means something very different if they have also stopped playing football.
Potential copers can be identified using a combination of self-reported function, global knee rating, hop performance and giving-way history. A period of structured neuromuscular or perturbation training can then help determine whether satisfactory function can be restored without immediate reconstruction.
If reconstruction is chosen, risk is not the same for everyone
ACL reconstruction should not be treated as an identical procedure with an identical rehabilitation pathway for every patient.
Factors such as young age, high-level pivoting sport, rotatory instability, increased posterior tibial slope, family history and generalised ligamentous laxity influence the risk of graft failure.
The guide highlights the STABILITY high-risk profile, where having at least two of the following raises particular concern:
grade 2 or greater pivot shift
intention to return to a high-risk pivoting sport
generalised ligamentous laxity
Graft choice may also matter in hypermobile patients. In patients with generalised joint hypermobility, particularly when knee hyperextension is present, evidence presented in the guideline favours bone–patellar tendon–bone or quadriceps tendon grafts over hamstring graft alone.
Some high-risk patients may also receive a lateral extra-articular tenodesis (LET) to improve rotational control.
Internal bracing is another emerging augmentation strategy. It can strengthen the graft construct mechanically, but current evidence does not justify assuming that it allows faster rehabilitation or independently eliminates graft-failure risk.
For the physiotherapist, understanding what procedure was performed helps explain why two apparently similar ACL patients may require different expectations and rehabilitation considerations.
Prehabilitation is part of ACL rehabilitation
The weeks before surgery should not be treated as dead time.
Useful pre-operative goals include:
full knee range of motion, minimal or no effusion, good quadriceps activation and restoration of strength toward the opposite limb.
Where possible, the injured leg should approach at least around 80% of contralateral strength before surgery.
Training can progress from quadriceps activation and isometrics toward squatting, unilateral strengthening, posterior-chain work, calf strengthening and appropriate kinetic-chain exercises.
The unaffected leg should also continue to be trained. Cross-education allows strength training on one side to produce some neural benefit on the opposite side and helps reduce general deconditioning.
Pre-operative testing also provides something extremely valuable for later rehabilitation: the patient's own baseline.
Post-operative rehabilitation should restore capacity progressively
Early ACL rehabilitation focuses on restoring extension, progressively recovering flexion, reducing effusion, normalising gait and re-establishing quadriceps activation.
Loading then increases progressively rather than jumping directly from basic rehabilitation to heavy strength work.
During the following months, rehabilitation develops:
quadriceps strength
hamstring strength
hip and calf capacity
unilateral control
balance
landing mechanics
running preparation
plyometric capacity
Open-chain knee extension can form part of this progression rather than being automatically excluded, with load and range appropriately progressed according to the stage of rehabilitation.
The response after exercise also matters. Some discomfort during loading may be acceptable, but symptoms that remain clearly elevated beyond the following 24 hours suggest that the previous dose exceeded current tolerance and should be adjusted.
Running should be earned, not scheduled
Reaching a certain postoperative week does not automatically make someone ready to run.
Return-to-running assessment should consider factors such as:
minimal or absent effusion
full range of motion
adequate quadriceps symmetry
knee stability
sufficient Limb Symmetry Index
satisfactory patient-reported function
Once those criteria are met, running can be gradually introduced before progressing toward braking, multidirectional movement, jumping and more demanding plyometric tasks.
The calendar still matters because biological healing cannot be ignored, but time should set the minimum biological boundary rather than act as the only progression criterion.
Return to sport requires more than 90% strength
Later-stage return-to-sport testing becomes considerably more demanding.
The guideline uses approximately 90% or greater limb symmetry for quadriceps and hamstring strength as one component of clearance alongside full symmetrical motion, absence of effusion and a stable clinical examination.
Testing should also assess how force is produced and absorbed.
A plyometric battery may include:
vertical jumping
repeated maximal jumps
unilateral jumps
drop jumps
repeated lateral hopping
horizontal hop distance
An athlete can have symmetrical strength on a dynamometer and still demonstrate poor deceleration, asymmetric landing or inadequate reactive ability.
Return-to-sport testing therefore needs to reflect what the athlete will actually be required to do.
Psychological readiness changes movement
Physical readiness is only part of ACL recovery.
Fear of reinjury can alter landing behaviour. Athletes with lower psychological readiness may demonstrate stiffer landings, reduced knee flexion, increased asymmetry and less favourable lower-limb control.
Tools such as the ACL-RSI and Tampa Scale of Kinesiophobia can therefore add information that strength and hop testing cannot provide.
Confidence should also be rebuilt through graded exposure. Athletes need progressively successful experiences performing the movements they fear, rather than simply being told that the knee is strong enough.
The final stage is controlled chaos
Traditional rehabilitation often progresses strength, running and jumping but stops short of one important demand: decision-making under pressure.
Sport is unpredictable.
An athlete rarely knows exactly when they will need to cut, decelerate, react to an opponent or change direction.
Late rehabilitation should therefore progress from controlled drills toward increasingly unpredictable tasks:
controlled → semi-chaotic → fully sport-representative.
Visual or verbal reaction cues, dual-task drills, opponent-based movement and unpredictable changes of direction gradually shift the athlete from thinking about the knee toward responding naturally to the environment.
That transition matters because returning to sport is not simply about reproducing strength in a clinic. It is about restoring the ability to produce, absorb and redirect force confidently while attention is somewhere else.
The central principle across both meniscus and ACL rehabilitation is therefore the same: preserve tissue where possible, restore capacity progressively, and progress according to objective function rather than symptoms or time alone.