Patellofemoral pain syndrome

patellofemoral syndromePatellofemoral painPatellofemoral disordersRetropatellar Pain Syndrome
Patellofemoral pain syndrome (PFPS), also known as runner's knee, is knee pain as a result of problems between the kneecap and the femur.wikipedia
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Knee pain

kneeKnee Inflammation
Patellofemoral pain syndrome (PFPS), also known as runner's knee, is knee pain as a result of problems between the kneecap and the femur.

Chondromalacia patellae

chondromalaciaChondromalacia patella
PFPS is one of a handful of conditions sometimes referred to as runner's knee; the other conditions being chondromalacia patellae, iliotibial band syndrome, and plica syndrome.
Chondromalacia patellae is sometimes used synonymously with patellofemoral pain syndrome.

Clarke's test

Clarke's sign
The patellofemoral glide, tilt, and grind tests (Clarke's sign), when performed, can provide strong evidence for PFPS.
In medicine, Clarke's test is a component of knee examination which may be used to test for patellofemoral pain syndrome, or anterior knee pain.

Runner's knee

PFPS is one of a handful of conditions sometimes referred to as runner's knee; the other conditions being chondromalacia patellae, iliotibial band syndrome, and plica syndrome.

Patellar dislocation

Patella dislocationdislocated kneecapdislocation of his kneecap
The Q-angle, lateral hypermobility, and J-sign are commonly used determined to determine patellar maltracking.
An effective rehabilitation program reduces the chances of re-injury and of other knee-related problems such as patellofemoral pain syndrome and osteoarthritis.

Vastus medialis

Vastus medialis musclemedialismedialis muscles
If the strength of the vastus medialis muscle is inadequate, the usually larger and stronger vastus lateralis muscle will pull sideways (laterally) on the kneecap.
Characteristics of the vastus medialis, including its angle of insertion, correlate with presence of knee joint pain (patellofemoral pain syndrome).

Plica syndrome

plica (or naturally occurring folds in the knee joint lining)
PFPS is one of a handful of conditions sometimes referred to as runner's knee; the other conditions being chondromalacia patellae, iliotibial band syndrome, and plica syndrome. The diagnosis of patellofemoral pain syndrome is made by ruling out patellar tendinitis, prepatellar bursitis, plica syndrome, Sinding-Larsen and Johansson syndrome, and Osgood–Schlatter disease.

Iliotibial band syndrome

injured her left kneeIT Band Syndrome
PFPS is one of a handful of conditions sometimes referred to as runner's knee; the other conditions being chondromalacia patellae, iliotibial band syndrome, and plica syndrome.

Patellar tendinitis

jumper's kneePatellar tendinopathypatellar tendonitis
The diagnosis of patellofemoral pain syndrome is made by ruling out patellar tendinitis, prepatellar bursitis, plica syndrome, Sinding-Larsen and Johansson syndrome, and Osgood–Schlatter disease.
Other conditions that can appear similar include infrapatellar bursitis, chondromalacia patella and patellofemoral syndrome.

Patella

kneecapknee capPatela
Patellofemoral pain syndrome (PFPS), also known as runner's knee, is knee pain as a result of problems between the kneecap and the femur.

Femur

femorathigh bonefemoral
Patellofemoral pain syndrome (PFPS), also known as runner's knee, is knee pain as a result of problems between the kneecap and the femur.

Sneakers

athletic shoetrainerssneaker
It is particularly common among runners.

Physical examination

physical exammedical examinationexamination
The diagnosis is generally based on the symptoms and examination.

Physical therapy

physiotherapyphysiotherapistphysical therapist
Treatment typically involves rest and physical therapy. In the uncommon cases where a patient has mechanical symptoms like a locked knee, knee effusion, or failure to improve following physical therapy, then an MRI may give more insight into diagnosis and treatment.

Shoe insert

arch supportInsolesShoe insoles
Insoles may help some people.

Crepitus

clicking noisescrackling soundcrackling sound with joint movement
The knee joint may exhibit noises such as clicking.

Quadriceps femoris muscle

quadricepsquadriceps musclequadriceps femoris
Risk factors include trauma, increased training, and a weak quadriceps muscle.

Osteoarthritis

arthrosisdegenerative joint diseaseKnee osteoarthritis
Secondary causes of PF Syndrome are fractures, internal knee derangement, osteoarthritis of the knee and bony tumors in or around the knee.

Genu valgum

knock-kneedknock kneesgenu valgum'' (knock knee)
The Q-angle, lateral hypermobility, and J-sign are commonly used determined to determine patellar maltracking. Causes can also be a result of excessive genu valgum and the above-mentioned repetitive motions leading to abnormal lateral patellar tracking.

Magnetic resonance imaging

MRIMRI scanmagnetic resonance imaging (MRI)
Magnetic resonance imaging rarely can give useful information for managing patellofemoral pain syndrome and treatment should focus on an appropriate rehabilitation program including correcting strength and flexibility concerns.

Knee effusion

effusionjoint swellingknee
In the uncommon cases where a patient has mechanical symptoms like a locked knee, knee effusion, or failure to improve following physical therapy, then an MRI may give more insight into diagnosis and treatment.

Prepatellar bursitis

Housemaid's Knee
The diagnosis of patellofemoral pain syndrome is made by ruling out patellar tendinitis, prepatellar bursitis, plica syndrome, Sinding-Larsen and Johansson syndrome, and Osgood–Schlatter disease.

Sinding-Larsen and Johansson syndrome

The diagnosis of patellofemoral pain syndrome is made by ruling out patellar tendinitis, prepatellar bursitis, plica syndrome, Sinding-Larsen and Johansson syndrome, and Osgood–Schlatter disease.

Osgood–Schlatter disease

Osgood-Schlatter diseaseOsgood Schlatter diseaseOsgood-Schlatter's disease
The diagnosis of patellofemoral pain syndrome is made by ruling out patellar tendinitis, prepatellar bursitis, plica syndrome, Sinding-Larsen and Johansson syndrome, and Osgood–Schlatter disease.

Vastus lateralis muscle

vastus lateralisexternuslateralis
If the strength of the vastus medialis muscle is inadequate, the usually larger and stronger vastus lateralis muscle will pull sideways (laterally) on the kneecap.