Infrapatellar fat pad syndrome | |
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Other names | Hoffa's disease [1] |
Cross section of the human knee | |
Specialty | Orthopedics, sports medicine |
Symptoms | Pain in the front of the knee [2] |
Causes | Trauma, surgery [1] |
Differential diagnosis | Patellar tendinopathy, infrapatellar bursitis [2] |
Treatment | Steroid injections, physical therapy, surgery [2] [1] |
Frequency | Relatively common (athletes) [2] |
Infrapatellar fat pad syndrome, also known as Hoffa's disease, is when pain in the front of the knee occurs due to problems with the infrapatellar fat pad. [2] Pain is generally just below the kneecap. [2] Symptoms may worsen if the knee is overly straightened or bent for too long a period. [2] Complications may include an inability to fully straighten the knee. [2]
The underlying mechanism may involve bleeding, inflammation, or insufficient space for the fat pad. [2] This may occur as a result of trauma or surgery to the knee. [1] Diagnosis may be supported by magnetic resonance imaging (MRI). [2]
Treatment is generally by steroid injections and physical therapy. [2] [1] If this is not effective surgery removal may be tried. [2] While overall it is an uncommon condition, [3] it is relatively common in athletes. [2]
Treatment is generally by steroid injections and physical therapy. [2] [1] If this is not effective surgery removal may be tried. [2] High quality evidence for surgery is lacking as of 2015. [3]
Compartment syndrome is a condition in which increased pressure within one of the body's anatomical compartments results in insufficient blood supply to tissue within that space. There are two main types: acute and chronic. Compartments of the leg or arm are most commonly involved.
Tendinopathy, also known as tendinitis or tendonitis, is a type of tendon disorder that results in pain, swelling, and impaired function. The pain is typically worse with movement. It most commonly occurs around the shoulder, elbow, wrist, hip, knee, or ankle.
De Quervain syndrome is inflammation of two tendons that control movement of the thumb and their tendon sheath. This results in pain at the outside of the wrist. Pain is typically increased with gripping or rotating the wrist. The thumb may also be difficult to move smoothly. Onset of symptoms is gradual.
Sciatica is a health condition characterized by pain going down the leg from the lower back. This pain may go down the back, outside, or front of the leg. Onset is often sudden following activities like heavy lifting, though gradual onset may also occur. The pain is often described as shooting. Typically, symptoms are only on one side of the body. Certain causes, however, may result in pain on both sides. Lower back pain is sometimes present. Weakness or numbness may occur in various parts of the affected leg and foot.
Osteoarthritis (OA) is a type of joint disease that results from breakdown of joint cartilage and underlying bone. The most common symptoms are joint pain and stiffness. Usually the symptoms progress slowly over years. Initially they may only occur after exercise, but can become constant over time. Other symptoms may include joint swelling, decreased range of motion, and, when the back is affected, weakness or numbness of the arms and legs. The most commonly involved joints are the two near the ends of the fingers and the joint at the base of the thumbs; the knee and hip joints; and the joints of the neck and lower back. Joints on one side of the body are often more affected than those on the other. The symptoms can interfere with work and normal daily activities. Unlike some other types of arthritis, only the joints, not internal organs, are affected.
Plantar fasciitis is a disorder of the connective tissue which supports the arch of the foot. It results in pain in the heel and bottom of the foot that is usually most severe with the first steps of the day or following a period of rest. Pain is also frequently brought on by bending the foot and toes up towards the shin. The pain typically comes on gradually, and it affects both feet in about one-third of cases.
Tennis elbow, also known as lateral epicondylitis, is a condition in which the outer part of the elbow becomes painful and tender. The pain may also extend into the back of the forearm and grip strength may be weak. Onset of symptoms is generally gradual. Golfer's elbow is a similar condition that affects the inside of the elbow.
Achilles tendinitis, also known as achilles tendinopathy, occurs when the Achilles tendon, found at the back of the ankle, becomes inflamed. The most common symptoms are pain and swelling around the affected tendon. The pain is typically worse at the start of exercise and decreases thereafter. Stiffness of the ankle may also be present. Onset is generally gradual.
Adhesive capsulitis, also known as frozen shoulder, is a condition associated with shoulder pain and stiffness. There is loss of both passive and active range of motion and shoulder movement is extremely painful. The pain and stiffness can impact daily life activities but tend to improve over time. It can be diagnosed by history and physical exam.
Patellar tendinitis, also known as jumper's knee, is an overuse injury of the tendon that straightens the knee. Symptoms include pain in the front of the knee. Typically the pain and tenderness is at the lower part of the kneecap, though the upper part may also be affected. Generally there is not pain when the person is at rest. Complications may include patellar tendon rupture.
Snapping hip syndrome, also referred to as dancer's hip, is a medical condition characterized by a snapping sensation felt when the hip is flexed and extended. This may be accompanied by a snapping or popping noise and pain or discomfort. Pain often decreases with rest and diminished activity. Snapping hip syndrome is commonly classified by the location of the snapping as either extra-articular or intra-articular.
Anterior cruciate ligament injury is when the anterior cruciate ligament (ACL) is either stretched, partially torn, or completely torn. The most common injury is a complete tear. Symptoms include pain, a popping sound during injury, instability of the knee, and joint swelling. Swelling generally appears within a couple of hours. In approximately 50% of cases, other structures of the knee such as surrounding ligaments, cartilage, or meniscus are damaged.
Calcific tendinitis is a form of tendinitis, a disorder characterized by deposits of hydroxyapatite in any tendon of the body, but most commonly in the tendons of the rotator cuff (shoulder), causing pain and inflammation. The condition is related to and may cause adhesive capsulitis.
Arthrofibrosis has been described in most joints like knee, hip, ankle, foot joints, shoulder, elbow, wrist, hand joints as well as spinal vertebrae. In the knee, it can happen after knee injury or surgery. There is excessive scar tissue formation within the joint and surrounding soft tissues leading to painful restriction of joint motion that persists despite physical therapy and rehabilitation. The scar tissue can involve only a part of the knee joint or the whole knee. The scar tissue may be located inside the knee joint or may involve the soft tissue structures around the knee joint. Arthrofibrosis may arise without an obvious cause or it may follow a known cause.
Patellofemoral pain syndrome (PFPS), also known as runner's knee, is knee pain as a result of problems between the kneecap and the femur. The pain is generally in the front of the knee and comes on gradually. Pain may worsen with sitting, excessive use, or climbing and descending stairs.
The infrapatellar fat pad is a cylindrical piece of fat that is situated under and behind the patella bone within the knee.
A patellar dislocation is a knee injury in which the patella (kneecap) slips out of its normal position. Often the knee is partly bent, painful and swollen. The patella is also often felt and seen out of place. Complications may include a patella fracture or arthritis.
Platelet-rich plasma (PRP), also known as autologous conditioned plasma, is a concentrate of platelet-rich plasma protein derived from whole blood, centrifuged to remove red blood cells. Evidence for benefit is poor as of 2016. The cost per injection is generally $US 500 to 2,000 as of 2019.
Knee pain is pain in or around the knee.
Anterior interval release (AIR) is a type of arthroscopic knee surgery performed to alleviate pain and associated symptoms caused by scar tissue accumulation in the anterior region of the knee, behind and under the knee cap, in a condition called arthrofibrosis. In normal, asymptomatic knees, this anterior compartment of the knee comprises mobile, scar-free tissues such as the infrapatellar (Hoffa's) fat pad. With progression, scar tissue leads to closure of the anterior interval, tethering the patella tendon and causing pain, loss of range of motion, damage to knee cartilage, and/or pain, among other symptoms.