introduction

Under a anterior knee joint pain refers to a pain that is mainly (not always exclusively) concentrated in the anterior part of the knee. This includes pain in the anterior thigh and lower leg, the kneecap, the quadriceps and patellar tendons and the anterior knee joint space.

Anterior knee joint pain can be caused by direct damage to the anatomical structures involved, or as transmitted pain in the case of damage to an anatomically distant location that is not causally a disease of the knee joint.

Most common causes

Below is an overview of the most common causes of pain in the front of the knee.

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Quadriceps Tendon Disorders:

  • Tendon tear (trauma)
  • Inflammation (transition of the quadriceps tendon to the kneecap)

Causes of the kneecap (= patella):

  • Patellar luxation
  • Rupture (trauma)
  • Degenerative changes

Patellar tendon diseases:

  • Sinding-Larsen's disease
  • Osgood-Schlatter disease
  • Patellar tip syndrome
  • Tendon tear (trauma)
Appointment with a knee specialist?

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Who am I?
My name is dr. Nicolas Gumpert. I am a specialist in orthopedics and the founder of .
Various television programs and print media report regularly about my work. On HR television you can see me every 6 weeks live on "Hallo Hessen".
But now enough is indicated ;-)

The knee joint is one of the joints with the greatest stress.

Therefore, the treatment of the knee joint (e.g. meniscus tear, cartilage damage, cruciate ligament damage, runner's knee, etc.) requires a lot of experience.
I treat a wide variety of knee diseases in a conservative way.
The aim of any treatment is treatment without surgery.

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Which therapy achieves the best results in the long term can only be determined after looking at all of the information (Examination, X-ray, ultrasound, MRI, etc.) be assessed.

You can find me in:

  • Lumedis - your orthopedic surgeon
    Kaiserstrasse 14
    60311 Frankfurt am Main

Directly to the online appointment arrangement
Unfortunately, it is currently only possible to make an appointment with private health insurers. I hope for your understanding!
Further information about myself can be found at Dr. Nicolas Gumpert

Patellar luxation

A patellar dislocation can be congenital, habitual (habitual) or rarely traumatic due to twisting. In either case, the kneecap is not in the correct alignment with the rest of the knee. Mostly it is shifted sideways.

Only the traumatic luxation of the patella is associated with severe pain. The leg is kept in a flexed position and a strong joint effusion often forms. The cause of the dislocation is the damage to the extensor tendon apparatus located on the inside of the knee. Sometimes parts of the bone or cartilage can also be injured. In order to recognize this, an X-ray image and an MRI of the knee joint are made.

In the case of minor injuries, the doctor can reposition the kneecap by hand and then immobilize it in extension for a few weeks. In the case of larger injuries, the extensor tendon apparatus must be treated in a small operation (arthroscopy).

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Siding-Larsen's disease

Sindig-Larsen disease (also Sindig-Larsen-Johansson disease) is a disease of the kneecap.

Overloading causes inflammation on the kneecap. This arises where the patellar tendon attaches to the kneecap. In the event of prolonged overload, the inflammatory reaction can cause severe damage to the patellar tendon (up to the tendon rupture) or to the kneecap. Small pieces of bone can loosen on the kneecap, which then die off because there is no longer any blood supply. So-called necrosis of these bone parts occurs.

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The main symptoms are pain in the anterior knee joint, usually just below the kneecap.

Quadriceps tendon tear

The quadriceps are our large muscle on the front of the thighs. As the name quadri (= four) - ceps (= head) suggests, it is a four-headed muscle, which therefore consists of four muscle parts. The quadriceps are the only muscle that causes extension in the knee joint.

The quadriceps tendon pulls at the top of the kneecap and is usually very thick and strong. Therefore, a quadriceps tendon tear is very rare. Such a crack can, however, arise if very high forces are applied (for example in high-speed accidents). A weakening of the tendon due to permanent excessive strain or inflammation in the knee joint can also promote a quadriceps tendon tear.

The result is pain in the front of the knee joint, usually above the kneecap. Usually, such a quadriceps tendon tear must be treated surgically.

Kneecap arthrosis

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In kneecap arthrosis, the pain is just behind the kneecap.
  • Synonyms:
    Retropatellar osteoarthritis, retropatellar osteoarthritis, osteoarthritis of the kneecap
  • Place of greatest pain:
    Behind the kneecap
  • Pathology / cause:
    Cartilage damage
  • Age:
    Older (> 50 y.), With general knee osteoarthritis; younger, in the context of injuries, congenital cartilage weakness, unfavorable kneecap movement
  • Gender:
    Women> men
  • Accident:
    After a fracture of the kneecap (patellar fracture), often after partial or complete dislocations of the kneecap (patellar dislocation)
  • Type of pain:
    piercing, bright
  • Pain development:
    Mostly continuous increase in pain over the years. Acute after a dislocation of the kneecap (patellar dislocation) with cartilage damage
  • Pain occurrence:
    V.a. after exercise, especially when going down stairs / downhill; Displacement pain of the kneecap.
  • External aspects:
    Possibly audible rubbing of the kneecap; Possibly uneven kneecap run too sideways (patellar lateralization), in old age possibly palpable bone edges.

Read more about kneecap arthrosis at:

  • Retropatellar arthrosis

Jumper knees

The pain in a so-called jumper knee is often localized at the lower end of the kneecap.
  • Synonyms:
    jumpers knee, patellar tip syndrome
  • Place of greatest pain:
    Mostly the lower end of the kneecap (lower patellar pole)
  • Pathology / cause:
    Inflammation or overuse disease of the patella tendon, more rarely inflammation of the quadriceps tendon at the kneecap attachment.
  • Age:
    Every age; often young, physically active people.
  • Gender:
    no gender preference
  • Accident:
    No; or repeated micro-injuries of the tendon due to sudden tendon pull during jump loads.
  • Type of pain:
    often stabbing
  • Pain development:
    mostly creeping
  • Pain occurrence:
    Depending on the stage, mostly during or after the sporting activity.
  • External aspects:
    Usually none.


You can find comprehensive information under our topic:

  • Jumper knees

Pes anserinus attachment tendinosis

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The pain sits below the inner knee joint space.
  • Synonyms:
    Enthesopathy Pes anserinus (quotes)
  • Place of greatest pain:
    Below the inner knee joint space.
  • Pathology / cause:
    Tendon attachment disease of various thigh muscles that attach as a common tendon plate to the head of the tibia.
  • Age:
    Every age. Often with runners (jogging). Often in older people after knee prosthesis implantation.
  • Gender:
    no gender preference
  • Accident:
    No
  • Type of pain:
    pulling, stabbing
  • Pain development:
    Load-dependent. Partly morning start-up pain.
  • Pain occurrence:
    Load-dependent. Often after exercise and in the morning for runners. Improvement after warming up.
  • External aspects:
    No

Bursitis

The point of greatest pain is above the kneecap or along the patellar tendon.
  • Synonyms:
    Prepatellar bursitis, infrapatellar bursitis
  • Place of greatest pain:
    Directly above the kneecap (prepatellar bursitis) or in the course of the kneecap tendon = patellar tendon (infrapatellar bursitis)
  • Pathology / cause:
    Mostly non-bacterial inflammation (= itis) of the bursa (bursa). Most frequently affected are the bursa that rests on the kneecap (prepatellar bursitis), the bursa under the kneecap tendon (deep infrapatellar bursitis / superficialis) or the bursa in the area of ​​the pes anserinus (equated with pes anserinus tendinosis, see above).
  • Age:
    every age
  • Gender:
    no gender preference
  • Accident:
    In prepatellar bursitis often impact trauma to the knee joint or appearance after prolonged kneeling.
  • Type of pain:
    stabbing
  • Pain development:
    mostly suddenly
  • Pain occurrence:
    Depending on the load, e.g. when kneeling.
  • External aspects:
    Sometimes swelling and overheating over the kneecap. With bacterial inflammation, severe reddening.

Read more on this topic:

  • Bursitis on the knee

Patellofemoral pain syndrome

The pain is both behind and around the kneecap.
  • Synonyms:
    Chondropathiae patellae, FPS, CPP
  • Place of greatest pain:
    Behind and around the kneecap.
  • Pathology / cause:
    Overuse pain of the kneecap cartilage due to: underdevelopment of the kneecap and the kneecap bearing (patellar dysplasia), too tight kneecap guidance, knock knees, wrong running style (see jogging), muscle shortening of the upper and lower legs, muscle imbalances.
  • Age:
    Often younger age. Athlete.
  • Gender:
    Women a little more often.
  • Accident:
    No
  • Type of pain:
    Indefinite
  • Pain development:
    Load-dependent. Pain at rest possible.
  • Pain occurrence:
    Running downhill. Long sitting.
  • External aspects:
    Possibly small kneecap. Knock knees.

Disease of Hoffa's fat body

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The pain sits along the patella tendon.
  • Synonyms:
    Hoffitis
  • Place of greatest pain:
    In the course of the kneecap tendon (patellar tendon) towards the inside of the knee.
  • Pathology / cause:
    Inflammation or tear in the body of fat in the knee joint.
  • Age:
    Every age. Increasingly younger, physically active people (cross-country skiers).
  • Gender:
    No gender preference.
  • Accident:
    Possibly. Hyperextension trauma to the knee joint.
  • Type of pain:
    Stinging, bright. Sense of stiffness.
  • Pain development:
    Slowly increasing. Suddenly after a trauma.
  • Pain occurrence:
    V.a. after standing for a long time or in a crouching position.
  • External aspects:
    Joint swelling (joint effusion)

Osgood - Schlatter disease

  • Synonyms:
    Osteochondrosis deformans juvenilis of the tibial tuberosity
  • Place of greatest pain:
    On the front of the tibia, attachment of the patellar tendon to the shin (tibial tuberosity)
  • Pathology / cause:
    Relatively frequent necrosis (death) of the tibial apophysis (child's bone core). This disease belongs to the group of aseptic necroses in children, due to a local circulatory disorder.
  • Age:
    Usually occurring between the ages of 10-14 years in active children / adolescents.
  • Gender:
    Boys tend to be affected more often.
  • Accident:
    No
  • Type of pain:
    Piercing, bright.
  • Pain development:
    Slowly increasing.
  • Pain occurrence:
    After or during sporting activity. Especially after jumping sports.
  • External aspects:
    Often swelling in the affected area.

Read more about this:

  • Osgood-Schlatter disease
  • Treatment of Osgood-Schlatter's disease with bandages

Patellar tendon tear

  • Synonym: rupture of the patellar tendon
  • Causes: The patellar tendon is used to transmit power from the quadriceps (anterior thigh muscle) to the lower leg. Since it is deflected over the kneecap, great forces are exerted on it due to the leverage effect. Exercise can therefore lead to a tear or tear in the tendon. Often there was already an impending damage to the tendon, for example due to age-related wear, an old knee injury or long-term use of medication such as cortisone. The most common mechanism of injury is excessive tension in the thigh when the knee is bent, for example when there is an abrupt change in direction.
  • Symptoms: Typical symptoms are sudden pain. Depending on the extent of the injury, the knee can only be partially extended or not at all.The power transmission is considerably reduced and is associated with an unsafe stance or gait pattern.
  • Diagnosis: To diagnose a patellar tendon tear, the kneecap and the tendon are palpated. On the one hand, a high position of the kneecap and a break in the continuity of the tendon can be felt. For a reliable diagnosis, an ultrasound of the tendon is done and usually an X-ray, which should show bony injuries or a displacement of the kneecap. An MRI can also show the injury.
  • Therapy: The therapy of a complete patellar tendon rupture is inevitably an operation with tendon sutures and a fixation of the kneecap with a wire loop to keep it in the right place. A torn patellar tendon can also be treated conservatively with immobilization and physiotherapy if there is little restriction in extension. The prognosis of the patellar tendon rupture is good, but a healing process of several weeks must be expected.

Kneecap fracture

  • Causes: A kneecap often occurs as a result of direct violence on the knee in the course of a fall or a traffic accident. Rarely, a part of the patella can break off when the patella is dislocated.
  • Symptoms and diagnosis: Typically, a joint effusion is also visible here and the extension of the knee joint is painfully restricted. Obvious injuries to the skin and bruises can be an initial indication of the presence of a herniated kneecap. Sometimes the fracture fragments can be palpated. For a reliable diagnosis, however, an X-ray must be made.
  • Therapy: If the fracture fragments are not displaced in relation to each other, the fracture can be treated without surgery with relief by using crutches and immobilization. If the rubble is shifted, however, surgical treatment with wires should be carried out. Overall, the kneecap heals well, but in the later course a painful restriction of movement or a so-called retropatellar osteoarthritis can develop.

Causes of pain below the kneecap

The patellar tendon is located below the kneecap. Therefore, pain immediately below the kneecap is often due to damage to the patellar tendon.

For example, excessive stress can lead to inflammation of the tendon, which is noticeable as anterior knee pain below the kneecap. People who work a lot on their knees (e.g. tilers and other craftsmen) are particularly affected. Diseases of the kneecap such as Sindig-Larsen's disease or the patellar tendon, e.g. Osgood-Schlatter's disease can trigger the symptoms.

Causes of pain above the kneecap

The quadriceps tendon attaches at the top of the kneecap, so pain above the kneecap is often triggered by the tendon or the quadriceps muscle.

An injury to the muscle such as a torn muscle fiber or simply sore muscles or tension can lead to pain above the kneecap. Injuries to the tendon, such as a quadriceps tendon (torn), can also cause pain. Likewise, knee pain above the kneecap can be triggered by inflammation at the top of the kneecap. This is often caused by overuse and can even cause bone damage.

Concomitant symptoms

swelling

Swelling of the knee is a common symptom of pain.

On the one hand, swelling such as water retention in the knee itself can cause pain; on the other hand, the swelling can also be the expression of an injury in the knee joint. For example, if there is inflammation of the kneecap or neighboring tendons and ligaments, the inflammatory reaction causes swelling. A tear in a tendon, muscle fiber or ligament can also manifest itself as swelling and pain. Such a tear often leads to bleeding, which brings additional volume to the knee joint and therefore makes it swell.

Read more on this topic:

  • Knee joint effusion
  • Cruciate ligament overstretched

Water in the knee

Water in the knee is a typical symptom of degenerative diseases. It often occurs with arthritic changes in the knee joint.

Injury to muscles or the menisci can also cause extra fluid in the knee. The destruction of the tissue causes the liquid to escape from the cells. This fluid remains in the knee joint and is colloquially referred to as water in the knee. The increased fluid accumulation often limits the mobility of the joint. In addition, pain can occur, especially when moving, as the water is displaced from the joint space and presses on other structures.

You might be interested in these topics:

  • Osteoarthritis of the knee
  • Meniscal tear

Crack

The occasional pop in the knee occurs in many people and is usually not due to dire causes.

However, if the cracking occurs regularly with certain movements or if it is associated with pain, the cause should be clarified. A cracking can be triggered, for example, when the tendon of a muscle jumps back and forth between two positions when the knee joint is moved. But it can also be triggered by injured structures that block the knee in one movement, for example. If the joint is moved against this resistance, it will make a clicking sound.

blockade

Restriction of movement in the knee can have many causes.

Often there is pain when moving due to occlusion (e.g. osteoarthritis) or injuries to muscles, ligaments or menisci, which is why the knee can only be bent or stretched against pain. Water retention can also cause movement restrictions due to the increased volume in the joint. When a proper blockage occurs in the joint, an injured structure such as a torn meniscus is often the cause.

Loss of strength

Loss of strength in the knee joint is usually due to muscular problems.

For example, overloading the muscles can lead to a temporary loss of strength. Injuries and inflammation also reduce muscle strength. Diseases of the nerves rarely lead to strength restrictions. Sometimes pain caused by other structural damage can also lead to reduced mobility and, over time, to a reduction in muscles and thus strength.

Pain when climbing stairs

When climbing stairs, the knee joint is subject to particular stress.

The front part of the knee joint is particularly affected when walking down. Front knee pain when climbing stairs is therefore quite unspecific. They can indicate structural damage such as a tear in the meniscus or ligament and tendon disease. But arthritic changes and cartilage damage can also make themselves felt through front knee pain when climbing stairs.

Pain after exercise

If the anterior knee pain occurs after exercise, this usually indicates that the joint is overstressing.

If the pain occurred after a fall or collision, the knee should definitely be examined by an orthopedic surgeon for serious damage. If the complaints are more chronic, inflammation of the tendons or muscular overload can be the cause.

treatment

Therapy for pain in the knee joint is depending on the underlying cause. Is it a disease that conservative (non-surgical) can be treated, so help in the acute phase pain reliever drugs in tablet form (for example diclofenac, ibuprofen) or as an ointment (Voltaren, contains the active ingredient diclofenac). One often helps with injuries Cool of the knee while in other diseases such as osteoarthritis mostly warmth is perceived as more pleasant. Depending on the disease, a temporary full to partial Immobilization or support the knee joint in the form of a Orthosis to be necessary. The indications include, for example, injuries to the Tape apparatus or the menisci.

In the case of most illnesses or injuries, however, you should avoid sparing the knee for too long, so that it should be practiced again quickly - if necessary under physiotherapeutic guidance. Also Shoe insoles and Bandages can be helpful as well as Crutches.
In addition to physiotherapy, physical therapy is also used in conservative treatment. She works among other things with ultrasound as well Alternating and direct current. It comes to one improved blood circulation, one Inhibition of inflammatory processes and the Loosening of tense muscles. Invasive therapy methods for knee damage include Knee reflection (Knee arthroscopy) and surgery. Arthroscopy is often used for diagnostic purposes, but it also enables interventions such as one to be carried out Cartilage smoothing, or the removal of certain structures. The open surgery comes for example with a replacement of ligaments, a correction of Bone malpositions or using a artificial knee joint for use.

Bandages

There are a number of different bandages for the knee joint that can be used depending on the type of discomfort or injury.

For the anterior knee pain, bandages that hold the kneecap in particular are often helpful. If only the kneecap is problematic, a patella bandage may also be sufficient. If the pain is muscular or caused by ligament structures, a larger bandage should be selected.

Further information on this:

  • Knee brace
  • Bandages for patellar tip syndrome

diagnosis

Knee joint pain can have many causes. Accordingly, if symptoms persist, a doctor - usually an orthopedic surgeon - should be consulted to get to the bottom of the cause. At the beginning of the diagnosis there is always the questioning of the patient (anamnese). In the case of knee pain, important questions are, for example, where exactly it is located, when it first appeared, whether it is permanent or only in certain situations, whether it only occurs during exercise or also at rest, whether the pain radiates, whether it is in the There was a previous history of trauma, whether the patient is active in sports and, if so, which sports he does, what kind of occupation the patient does, whether he feels a sense of instability and what therapeutic attempts have been made so far, for example taking pain reliever medication.

Next up is the physical exam. The doctor should only inspect, i.e. look at the knee. Attention should be paid to malpositions, redness, knee swelling and bruise marks as well as the gait pattern. The investigation follows. It should be started carefully and if possible not directly at the most painful point, as this can severely limit the patient's willingness to cooperate.

When examining the knee, there are numerous tests called proper names that can differentiate more precisely where the problem lies. At the beginning, the range of motion should always be carried out according to the neutral-zero method in order to find out whether there is a movement restriction or not. More specific tests such as Steinmann 1, Steinmann 2, Apley and Payr can then be performed if damage to the meniscus or anterior and posterior drawer is suspected if damage to the cruciate ligament is suspected. After completing the anamnesis and the clinical examination, the examiner already has a suspicion in many cases and can adapt the further procedure to this suspicion.

Depending on the suspected cause, the following examinations can follow: a blood sample to find out whether it could be an inflammatory process, the recording of an X-ray image to assess the bony structures, a cross-sectional image examination (mostly magnetic resonance imaging = MRI of the knee joint) for an exact assessment of Soft tissues, ligaments and menisci in the knee joint area.
The minimally invasive diagnostic procedures include, in a broader sense, the knee joint puncture in the case of effusion and the arthroscopy, both of which can provide more precise information about the cause of the pain. During arthroscopy, in addition to inspecting the knee joint, interventions can also be made in the same procedure if necessary.

The diagnosis thus runs from the anamnesis and clinical examination to imaging procedures and minimally invasive interventions. For each patient, it must be weighed individually which examinations are sensible and which are avoidable. However, the history and clinical examination should be given to every patient without exception.

You might also be interested in: Chronic knee pain

To the diagnostic

Using our “Self” diagnostic agent is simple. Follow the respective link offered, where the location and description of the symptoms best match your symptoms. Pay attention to where on the knee joint the pain is greatest.

Medical terms related to the knee joint

For the exact anatomical assignment, we refer to the Anatomy Lexicon our page.

Here are some key terms related to knee pain:

  • Head fibulae - fibula head
  • dorsal- back
  • Fibula - fibula
  • Femur - thighs
  • Femoral condyle - thigh roll
  • Gon - knee, knee joint,
  • Hoffa - Fat body of the knee joint
  • lateral - outside, on the side
  • Medial collateral ligament - inner band
  • Ligamentum collaterale laterale - outer band
  • Ligamentum cruciatum anterius - anterior cruciate ligament
  • Ligamentum cruciatum posterius - posterior cruciate ligament
  • medial - Inside
  • Medial meniscus - medial meniscus
  • Lateral meniscus - External meniscus
  • patella - kneecap
  • Patellar tendon - kneecap tendon
  • popliteal - concerning the hollow of the knee
  • Quadriceps tendon - anterior femoral tendon
  • Tibia - shin
  • Tibial plateau - articular surface of the tibia
  • Tibial tuberosity - Elevation of the kneecap tendon attachment to the shin
  • ventral - front

Anatomy of the knee joint

  1. Thigh bone (femur)
  2. Medial meniscus
  3. External meniscus
  4. Fibula
  5. Shinbone (tibia)

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