Knee pain, meniscus damage, cruciate ligament rupture

Pain in the knee joint often arises suddenly and without warning. These shooting pains are often associated with feelings of blockage or instability. Swelling or overheating often accompany these symptoms.

A distinction must be made between acute and chronic knee pain. Chronic knee pain develops continuously and increases in intensity over months or years. This pain arises most often during or after exposing the joint to increased loads and they are also associated with swelling and overheating. Patients often describe preliminary pain, meaning that pain initially decreases after a few steps only to become more severe with increased loading.

In the kyBoot/on the kyBounder you can actively work against the pain; after only a few steps you will feel the positive effects in your knee joint.


Cruciate ligament rupture:
The cruciate ligaments form the central stabilising pillars of the knee joint. Their central function is to secure the knee joint during acceleration, deceleration and turning movements.
A cruciate ligament rupture causes a severe malfunction in the natural play of the joint. Training the stabilising leg musculature therefore plays an important role in conservative therapy. This compensates for joint instability in many cases and requires no surgical intervention.

  • Anterior cruciate ligament (ACL)
    Over 90 per cent of cruciate ligament injuries affect the anterior cruciate ligament. They are particularly prevalent in high-risk ‘pivoting’ sports such as football, hockey, volleyball, alpine skiing, tennis and basketball.
  • Posterior cruciate ligament (PCL):
    Injuries to the posterior cruciate ligament usually result from violent backward shifts of the lower leg in relation to the thigh, such as a direct frontal impact to the tibial plateau.

Meniscus damage (lesion/tear/rupture):
The human knee joint has a medial meniscus and a lateral meniscus. Each meniscus consists of elastic collagen fibre tissue. The menisci are located between the sliding surfaces of the upper and lower leg. They move in the same direction when the knee contracts or extends, and during rotating movements to the outside or inside. The lateral meniscus is smaller and more mobile than the medial meniscus. The menisci serve to compensate for the incongruence between the upper and lower leg, to expand the contact surface and to transmit power. During power transmission, the menisci facilitate a 30–70 per cent distribution of the entire load (after a meniscus has been completely removed, the load on the cartilage increases). The meniscus is also responsible for shock absorption and joint lubrication and contributes to the stability of the entire knee joint. Meniscus tears can be traumatic or degenerative in nature. Medial tears are three times as common as lateral tears.


  • Acute knee pain often arises in connection with a trauma (accident). The accident, often a twisting trauma during sport, leads to a ligament injury or meniscus damage. The cartilage surface can also be damaged. The most common ligament injury is a tear in theanterior cruciate ligament, which is associated with instability when walking. A meniscus tear, on the other hand, leads to a feeling of restriction and pain caused by pinched tissue.
  • Chronic knee pain can be traced back to degenerative (wear-related) or inflammatory joint disorders. The most common of these disorders is primary gonarthrosis, or wear of the joint cartilage. This cartilage loss leads to a loss of surface smoothness and consequently to constant friction in the joint. This, in turn, leads to articular effusion, movement impairment and pain (for more information, see ‘Osteoarthritis of the knee’). Inflammatory disorders of the knee joint include bacterial infection and joint rheumatism.
  • Other causes of knee pain:
    Tear in the posterior cruciate ligament, luxating patella, leg axis malposition, collateral ligament injury.

Long-term consequences

Insufficient joint stability increases the risk of osteoarthritis and can lead to damage to other knee structures.
That is why training the stabilising leg musculature is so important during conservative therapy or after an operation.

Conventional therapy


  • Physiotherapy
  • Administration of medications


  • diagnostic or therapeutic arthroscopy
  • Modern cartilage therapy methods also include the transplantation of cartilage cells or techniques aimed at forming replacement cartilage tissue (microfracturing, osteochondral transplantation)
  • Endoprosthesis
  • Cruciate ligament reconstruction
  • Meniscus suturing/joint mouse resection

The kybun principle of operation – being proactive

The kyBounder and kyBoot are ideal for bringing more movement to everyday life – without expending additional time. Acute pain is alleviated quickly and, thanks to gentle loading of the knee joints, walking longer distances without pain is possible again.

The soft, elastic foam material acts as a ‘crumple zone’, greatly dampening impact on the joints when running and walking.

Movement becomes more comfortable again and knee complaints are reduced, usually after just a few minutes. Those who like to exercise frequently find it much easier to shed extra pounds, which in turn reduces strain on the joints. Nearly all customers suffering knee complaints report a reduction in pain after they start wearing the kyBoot.

It’s not only the cushioning effect that helps alleviate pain. When standing the soft, elastic supporting underlay, one automatically keeps moving very slightly. Standing and walking on soft, elastic materials forces the core stabilising musculature to make a major contribution to stabilising the joints. The ability to stabilise the joints under load can be improved through proprioceptive, sensorimotor and coordination training on an unstable surface. Strong core stabilising musculature ensures an upright posture, resulting in more precise movements in the joints. This is especially important after a knee injury; it allows the knee to be treated and reduces the risk of long-term effects such as osteoarthritis. The improvement in joint stability reduces knee pain.

Prevention with kybun:

Everyone knows that the body exhibits signs of wear over time , and that problems while walking and running are bound to occur sooner or later. Yet most people only start to consciously perceive their body as a fragile and transient structure once they experience problems. In most cases, however, it is already too late because irreversible damage such as cartilage wear has already occurred.

That is why it is important not to wait for the pain to begin or increase before you act. The kyBounder and kyBoot help protect the joints and prevent osteoarthritis even in youth.

Beware! Short-term effects are often confused with long-term ones.

The adjustment processes in the body triggered by the kyBoot can take months or even years. Achieving lasting change is a protracted process.

Despite that, the effect of the soft, elastic material can also be felt quickly, for example in the relaxation of tense muscles and the alleviation of pressure points. These short-term effects must not be confused with the effects in the long run, since the long-term adjustment process cannot progress far enough in a week to be perceptible.

Short-term effects, on the other hand, can disappear again just as quickly as they came, or can even turn into complaints if you do not take the necessary breaks in the beginning.

This makes it important to understand that an initial reaction and a reduction of the positive feeling in the first few weeks with the kyBoot does not mean that the kyBoot is no longer working, but merely that the short-term sense of well-being is declining!

Initial reactions

Specific initial reactions with knee pain or after a knee injury:

When they experience knee pain, or after an acute injury, affected individuals automatically try to avoid the pain by limping.
The absorption of impact in the kyBoot makes it possible to walk without a limp. With the kyBoot, the regained joy in movement resulting from the reduction in pain may prompt the user to attempt much longer distances from one day to the next, thereby overtaxing the knee. The pain may return or intensify during the resting period after placing loads on the leg.
When you begin to use the kyBoot, try not to increase your walking distance too quickly despite the regained joy of walking, and always remember to allow your knee frequent breaks during a walk so that you have an opportunity to notice initial reactions such as pain early on.


Click here for the general initial reactions experienced by kyBounder and kyBoot beginners: Initial reactions

kybun exercises

For information about the special kyBoot exercises or the basic kyBounder exercises , please click here: kybun exercises

The following adaptations to the standard implementation of interval walking are important in case of knee pain or knee injuries :

Knee pain:

  1. Focus on slow exercises to promote stability and muscle coordination
  2. Slow exercise version: walking backwards (stability is provided by the transverse arch in the forefoot)
  3. Advanced: Walking downhill (forward)
    - high requirements for stabilisation of the knees

Knee injuries:

  1. Objective: Build up joint-stabilising muscles
  2. see knee pain!

Application tips

  • Upright body posture
  • Do not make your steps too long
  • Everyday/leisure: Walk with the kyBoot or use the kyBounder as much as possible. Take note of fatigue > perform the kybun exercises regularly and take a short break if needed.
  • Job: Sit as little as possible. Alternate sitting and standing in the beginning, and take along replacement shoes to change into
  • If you feel unsafe/too unstable in the kyBoot even after a test walk, we recommend a second generation kyBoot model. These have a somewhat wider sole in the area of the midfoot, providing added stability. Seek advice from your local kyBoot expert.
  • If you find the second generation kyBoot model too unstable for you as well, we recommend the kyBounder. You can choose the thickness you are comfortable with (the thicker, the less stable, the more intensive the training). You can also hold on to a fixed object. This can be helpful especially in the beginning after the operation, until you regain confidence in the hip.
  • Precise movements are essential with knee pain or a knee injury. Pay attention to exact movements and be sure to take a break in case of fatigue or weakness. Lateral/medial rolling of the ankle joint on the soft, elastic material has to be corrected so that the load is applied to the foot, knee and hip with proper axial alignment. Read more under ‘Lateral/medial rolling of the ankle joint’.
  • Contact a kybun dealer you trust if you have further questions, feel insecure or if there is no alleviation of pain when using the kyBoot even though you are following the tips.

Opinions/customer testimonials

I’ve spent 30 years working in retail while wearing shoes that were stylish but far too uncomfortable. This has unfortunately taken its toll on my legs. I was suffering from Morton’s neuroma, a bunion, pain in my knees and lumbar spine, and on top of that, I fractured my femoral neck last summer after having an accident. It was virtually impossible for me to walk or stand without feeling pain, even when wearing flat shoes with insoles. Fortunately, a friend of mine recommended the kyBoot shoes to me. She had been wearing a pair for a while herself, and was familiar with how the shoe’s enormous benefits. Purchasing a pair was definitely worth it for me as well. The comfortable air-cushioned insole makes walking a genuine pleasure – like you are walking on cotton. I also find the shoe very stylish, and people often come up to me to give their compliments. It was quite hard for me to choose just one pair from the large selection of models available – I’m sure this won’t be the last pair that I will buy. 
My daughter was aware of the shoes and said I should go to the Zurich Oberland region and try on a pair. I wasn’t that keen because I didn’t think they would work. When I had to go to hospital because of my foot problem, she told me about  the shoes there, too. Then she said she’d have a look and see if they had kyBoot shoes in Bern, too. She said the shop was really close by and we should drop in. We asked if I could try on a pair and  I was given a lovely pair of red shoes. I slipped them on and my knee pain completely disappeared.
I’ve already noticed an improvement when I’m out jogging after wearing kyBoot shoes for just one week. I’ve always had knee pain when I was jogging and always had to wear a bandage. After wearing kyBoot shoes for a week, I noticed that my knee wasn’t causing me any pain anymore. It’s great!
Guten Tag
Was ich in den letzten 16 Monaten erlebt habe, klingt wie ein Wunder. Zu verdanken habe ich es, davon bin ich überzeugt, zu einem sehr grossen Teil Ihrem Schuhwerk. Ich (56) trage regelmässig, passend zur Situation, den Trekkingschuh, die Sandale und im Winter den Winterstiefel. Sport gehört zu meinem Leben, seit ich Kind bin: Kunstturnen bis ich sechzehn war, Skifahren seit ich zwei bin und dazu gelegentlich zehn weitere Sportarten. An der Schule unterrichte ich Sport, habe nach dem Skirennsport (nationale Ebene, kein Spitzensport) die Berufsausbildung zum Ski- und Snowboardlehrer gemacht. Von Dezember bis Mai fahre ich leidenschaftlich gerne Ski und unterrichte auch.
Am 15. Februar 2013 bin ich in Montafon beim Freeriden nach einem Sprung über eine natürliche Geländeform in ein Loch gesprungen. Resultat s. Beurteilung aus folgendem MR -Bericht, Originaltext:
"Grad III- Läsion des medialen Seitenbandes proximal. Schräg von der Basis in die Unterfläche verlaufende Rissbildung im medialen Meniskushinterhorn. Lateraler Meniskus intakt. Nicht dislozierte Impressionsfraktur am latero-ventralen Tibiakopf, Spongiosafraktur am lateralendorsalen Kondylus. Keine Ruptur des vorderen oder hinteren Kreuzbandes.Wahrscheinlich vorbestehende leichte retropatelläre Chondropathie (Grad I). Grosser Erguss. Bakerzyste an typischer Stelle."
Nach langem Hin-und Her folgte ich mit meinem Entschluss dem Rat des Chirurgen, der von einer Operation abgesehen hatte. Das bedeutete, erst gar keine Belastung, dann das Eigengewicht des Beines und schliesslich nach 8 Wochen, Krücken gänzlich weglassen. Dank des weichen Auftritts, wagte ich von Beginn weg in Schritten zu gehen(durch positive psychische Beeinflussung). Es folgten erste Veloversuche und am 6. Juli die erste grosse Biketour von Interlaken über Habkern, Lombachalp, Sörenberg, Panoramastrasse, Giswil. Ohne Schmerzen!!! Am 31. Oktober stand ich auf dem Diableretsgletscher erstmals wieder auf den Skiern. Dann folgte eine lange Saison, natürlich inklusive (nachgeholte) Freeride-Week im Montafon, die ich vor einem Jahr leider nicht hatte beenden können. Seit Mai ist die Saison abgeschlossen und ich zeige im Turnen meinen Schülern ab und zu Sprünge vom Minitramp vor. d.h.:
Volle Bewegungsfreiheit und seit August 2013 NIE MEHR SCHMERZEN gehabt, dafür aber fast rund um die Uhr (Sandalen trage ich im Winter als Hausshuhe) einen Kybun-Schuh an den Füssen.
Dazu kommt, dass bei mir vor Jahren ein Bandscheibenvorfall diagnostiziert worden ist. Damals habe ich MBT-Schuhe getragen. NIE MEHR RÜCKENPROBLEME gehabt!
Dem Schicksal, dem behandelnden Arzt, der Therapeutin- ihnen allen bin ich zu grossem dank für besten Beistand verpflichtet.
Das grosse Erstaunen in meinem Freundes-Familien-Sportlerkreis über den sensationellen Heilungsverlauf meines Unfallknies (seit November 2013 ist das Dossier beim Arzt abgeschlossen, seit Oktober gehe ich nicht mehr in die Physio) und meine Überzeugung, dass Ihre Schuhe mit höchster Wichtigkeit zur Genesung beigetragen haben, bewogen mich zu diesem Schreiben.
Vielleicht tragen Antworten Ihrer Kunden, wie diese hier, auch dazu bei, dass Krankenkassen künftig einen Beitrag an die Anschaffungskosten leisten.
Ich hoffe, dass Sie weiterhin innovativ forschen und entwickeln und freue mich, bei Ihnen als Kunde in besten Händen zu sein.
Mit riesiger Dankbarkeit und freundlichen Grüssen,
Doris Blum
Lesen Sie hier  PDF (103 KB) das Original-Mail als pdf.
I suffered with pains in my legs and knees. I work as a waitress and we do 8 hours shifts. I looked for shoes that could help me endure the entire shift. Then I discovered kyBoot and bought a pair. I adjusted to them very quickly, I had no problems.  I enjoy working in them; it feels like walking on pillows, or clouds… It's been a year and I use only them. I recommended to the chefs at the restaurant to buy them because they are very comfortable for standing and they do not slip in the kitchen, which is good for both, chefs and waiters. And that's it – it's wonderful.
I am an event producer and while working I walk many hours during the day, from morning till afternoon. I wear my working clothes and at 5 pm I change into formal dress, so I look elegant. I haven’t found a pair of shoes that are comfortable, that I can wear and walk in up to 6 pm. By the time the event began I would be in pain: pains in my knees, in my back, I used pain killers, ointments and so on. The event had not started yet and I would be in tatters. Until I came across the ideal thing: kyBoot shoes. From the moment I put them on my body felt differently immediately, really, no kidding. There was a different feeling in my body. I felt less pains, until they disappeared completely, after the third or fourth time I walk in the shoes. I was not in pain. I started to produce my events in leisure, without pain killers or ointments. I recommend them to anyone, whatever the pain, they can help everyone.
Seitdem ich mein tägliches Bewegungspensum mit dem kyBoot erledige, spüre ich auch nach längerem Asphalttreten keine Knie- und Hüftschmerzen mehr.
Seit ich den kyBoot trage habe ich keine Rückenschmerzen mehr und die Kniebeschwerden haben auch abgenommen.
I feel good in these shoes. I can walk and stand in them as long as I like. My hips don't hurt, my knees don't hurt. I simply feel fine.  Watch the video
It's simply like being on an air mattress. It's much softer and shocks are absorbed. I can walk around normally without having to put too much thought into taking the pressure off my knee to stop the pain. That means that – in these shoes – I can walk absolutely normally, and I have the feeling that I walk much more gently, and I don't have any pain any more.
 Watch the video
"I am 74 years old and a passionate pilgrim. I first wore the kyBoot on my last 250-mile walk along the French Way. Walking was very pleasant and my knee pain was a thing of the past. I was especially surprised at how cushioned and agreeable it feels to walk on asphalt. I could feel the kyBoot strengthening the muscles in my legs and feet. I now only ever wear my sandals or my kyBoot."
I have a heel bruise on my left foot and torn ligaments on my right knee. I tried everything - anti inflammatory medication, anti inflammatory patches, crutches, knee pads, heel pads. They all helped a little. But nothing helped me as much as the kyBoot. I have two pairs and they are the only shoes that I wear now. The leather model is particularly comfortable.
One advantage is that you're not as tired in the evening, and don't have such bad knee pain. One disadvantage is that you have to get used to the shoes at the start. At first it's tough, until you've built up the muscles. But at some point it's no longer an issue. In the winter I'll have to try out the shoes with a higher shaft, or the snow will get in the top.
The kyBoot is of greatbenefit to me. First of all, it helped with my knee problem, and then it helped with my heel spurs. That was the key thing. But my knees even hurt less, too,and it stimulates your circulation.
Als aktive Wanderin und Hundehalterin bin ich oft stundenlang in der Natur unterwegs. Ich spüre, dass nur Gehen auf weichem, unebenem Untergrund echtes Wohlbefinden bedeutet. Waldböden, Alpweiden und abwechslungsreiche Wurzelpfade lösen ein tolles Laufgefühl aus. Seit meinen unfallbedingten Meniskusoperationen spüre ich das noch viel deutlicher als vorher. Durch Zufall entdeckte ich den kyBoot. Mit ihm habe ich genau das, was die Naturböden schenken, nun auch für den Alltag auf den Asphaltstrassen gefunden. Vom ersten Moment an war ich restlos glücklich. Heute bin ich eine fröhliche und überzeugte kyBoot-Trägerin.
Der kyBoot erleichtert mir den Alltag, weil ich in diesen Schuhen meine Knieschmerzen auf ein Minimum reduzieren kann!
The kyBoot is really kind on your jointsat work. In the evening I have less knee pain than before.That makes you far more rested and you can work more, andabove all longer.
I damaged my knees early on, when I was young. I didn't look out for my knees enough when riding my motorbike; they often got too cold. So I had to deal with knee problems from early on. Because of the hard sole in my work shoes, I very often had knee trouble in the evening. It's got much better since I've worn kyBoot shoes. The knee pain hasn't gone away entirely, but it really makes a big difference.

Experiences/further questions about knee pain or knee injuries

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