In my practice, I often see young patients and families in Dhaka who say, “The kneecap came out once, and now it keeps feeling unstable.” That history is very important. A single patella dislocation can be painful and frightening, but when the kneecap keeps slipping out again or repeatedly feels as if it will move out of place, the problem becomes more than an isolated injury. It becomes recurrent patella dislocation or recurrent patellar instability. [1][2]
One important point I want Bangladeshi patients to understand is this: recurrent patella dislocation is not only about pain. It is also about instability, joint confidence, cartilage protection, and long-term knee function. If the kneecap keeps slipping out of its groove, the cartilage behind the kneecap and the front of the thigh bone can also be damaged over time. [1]
For this reason, treatment should not be based only on rest or pain medicine. It should be based on why the kneecap is unstable in the first place, how often it dislocates, what damage has already occurred, and whether the knee has underlying alignment or anatomical issues that need to be addressed. [1][3]
What recurrent patella dislocation means
The patella, or kneecap, normally glides in a groove at the front of the femur called the trochlea. When the knee bends and straightens, the patella should remain centered within that groove. Recurrent dislocation means the kneecap repeatedly slips out, usually toward the outside of the knee. [1]
Some patients have full dislocations, where the kneecap comes completely out and may need to be reduced. Others have repeated subluxations, where the kneecap partly slips and then returns. Both can be disabling.
Why recurrence happens
When I evaluate patients with this problem, I usually find one or more contributing factors:
- injury to the medial patellofemoral ligament, or MPFL [1]
- a trochlear groove that is too flat [1]
- patella alta, where the kneecap sits too high [2]
- abnormal alignment, such as knock-knee pattern or rotational malalignment [1]
- ligamentous laxity [2]
- muscle imbalance, especially weakness of the inner quadriceps support [2]
This is why the treatment is not the same for every patient.
Common causes in Bangladesh
In Dhaka and across Bangladesh, I commonly see patella dislocation after:
- twisting while the foot is fixed on the ground
- awkward landing during football, cricket, or badminton
- slipping on wet floors or stairs
- a fall during sports or daily activity
- direct blow to the knee
AAOS notes that patellar dislocation often happens after a pivot, twist, or awkward fall, and it can also occur after a sharp blow to the kneecap. [1]
Symptoms of recurrent patella dislocation
Patients do not always describe the problem as “dislocation.” Sometimes they say:
- “My kneecap feels like it wants to jump out.”
- “The knee gives way.”
- “I am afraid to bend or run.”
- “It slips during stairs or squatting.”
Common symptoms
- repeated dislocation episodes
- a feeling of apprehension or insecurity in the kneecap [1]
- pain around the front of the knee
- swelling after episodes
- clicking, catching, or instability
- weakness and loss of confidence in the leg
In chronic cases, patients may also develop pain during kneeling, squatting, prayer movements, stair use, and sports. [2]
Why proper treatment matters
One important point I explain to my patients is that repeated dislocation is not harmless just because the kneecap “goes back in.”
Problems that can develop over time
- cartilage injury behind the kneecap [1]
- loose fragments of cartilage or bone [1]
- repeated falls or giving-way episodes
- chronic pain
- long-term patellofemoral arthritis [1][3]
If recurrent instability is ignored for too long, treatment may become more complex than it needed to be earlier.
How I evaluate recurrent patella dislocation
When I evaluate patients with this problem, I do not rely on one symptom alone. I want to understand the full instability pattern.
History
I ask about:
- how the first dislocation happened
- how many times it has recurred
- whether the kneecap reduced on its own
- whether there was severe swelling
- whether the knee locks or catches
- whether sports, stairs, squatting, or fast walking trigger symptoms
- whether there is family history of similar instability
Physical examination
On examination, I assess:
- kneecap tracking
- apprehension with lateral patella movement
- alignment of the limb
- quadriceps strength
- hip control and muscle balance
- generalized ligament laxity
AAOS notes that the doctor may assess walking, knee motion, weakness, and bone alignment around the kneecap. [1]
Imaging tests
X-rays
X-rays help assess patella position, bone anatomy, and alignment. [1]
MRI
MRI is often important to evaluate cartilage injury, loose fragments, MPFL injury, and overall knee anatomy. [1]
CT scan
In selected cases, CT helps define alignment problems more clearly, especially when the surgeon is concerned about bony maltracking. [1]
Non-surgical treatment
Not every patient with recurrent symptoms needs immediate surgery, but recurrent instability must be taken seriously.
When non-surgical care may be used
Non-surgical treatment is more commonly used:
- after a first-time dislocation without major damage [1][3]
- in milder instability patterns
- when the anatomy is not severely abnormal
- when symptoms are improving with rehabilitation
What non-surgical treatment includes
- activity modification
- short-term bracing
- swelling and pain control
- physiotherapy
- gradual return to activity
StatPearls notes that physical therapy should focus on closed-chain exercises, quadriceps strengthening, and also hip and gluteal strengthening to improve femoral control and reduce Q-angle forces. [3]
I usually tell Bangladeshi patients that physiotherapy is not just “some exercises.” It should be structured, progressive, and matched to instability. Random exercise without proper guidance often does not solve the problem.
When surgery becomes more likely
Recurrent dislocation is one of the most important reasons to consider surgical stabilization.
