Orthopädie am Rhy

Basel, Rheinfelden, Liestal

ORTHOPÄDIE AM RHY
Your specialists for knee problems

Don’t let knee pain bring you to your knees!

Knee problems can be painful and significantly impact your daily life as well as your ability to take part in sports and other physical activities. But why is that?
The knee is a complex joint that functions like a hinge and is made up of several components: the thighbone (femur), shinbone (tibia), fibula, and kneecap (patella).
The menisci – cartilage cushions between the thigh and shin – distribute pressure and act as shock absorbers. They are vulnerable to injury, especially during twisting movements.
Four key ligaments stabilise the knee: two cruciate ligaments and two collateral ligaments. Injury to any of these often results in instability.
The muscles also play an essential role: the front thigh muscles (quadriceps) straighten the knee, while the rear thigh muscles (hamstrings), supported by the calf muscles, bend it.

State-of-the-art support for knee osteoarthritis – precise, gentle, personalised

Are you suffering from painful knee osteoarthritis and considering a knee replacement?

We use innovative, robot-assisted surgical techniques with the VELYS™ system or patient-specific instruments with the MyKnee system. These methods allow for particularly precise implantation of the knee prosthesis – tailored to your individual anatomy. The high level of accuracy helps preserve surrounding tissue, improves mobility, and facilitates recovery.

Rely on our experience and advanced technology to regain a new quality of life with pain-free movement.

Knee – an overview of our treatments

In recent years, a variety of new, highly effective and increasingly gentle treatments of the knee joint have been developed, including joint-preserving, conservative (non-surgical) and surgical measures. For example, nowadays treatment of osteoarthritis of the knee by means of a total knee prosthesis can be delayed further and further.
In addition to traditional applications such as physiotherapy and physical measures, conservative measures also include the infiltration (injection) of cartilage-protecting "lubricants" and selective treatment with stabilising and axis-correcting knee splints. If conservative treatment is no longer sufficient, almost all ligament, meniscus and cartilage regenerative operations can be performed in the course of minimally invasive "keyhole surgery" (arthroscopy). The best individual treatment is carried out for you using the latest techniques and biocompatible materials:

Read more about the treatment options by our experts on the following pages!
The following treatments can be applied individually according to the symptoms and age:
- Cartilage healing with ACP
- Microfracture knee surgery
- Chondrocyte transplantation
- Corrective osteotomies
- Partial replacement of the knee joint
- Total prosthesis of the knee joint 

The VELYS system is a robot-assisted tool that supports surgeons during knee replacement surgery. It helps to precisely align and position the artificial joint according to the patient’s individual anatomy. The robot does not operate independently; instead, it provides real-time data and assists in the accurate planning and execution of the procedure.

The goal is to replace the knee joint in a way that restores mobility, stability, and function as naturally as possible. The system is used directly in the operating theatre and does not require any prior CT or MRI scans.

The anterior and posterior cruciate ligaments stabilise the knee joint and prevent the lower leg from sliding away from the thigh bone. Injuries to the anterior cruciate ligament are much more common than injuries to the posterior cruciate ligament. Typically, the anterior cruciate ligament can tear when the lower leg rotates outwards with the knee joint bent and tilted inward.

In principle, the following procedures are available for treating a rupture of the anterior cruciate ligament: conservative therapy, replacement of the anterior cruciate ligament or the healing response. The choice of the procedure depends on the age of the injury, the extent of the instability and the level of physical activity of the patient. The patient’s own cruciate ligament can be preserved in the healing response. During a small arthroscopic procedure, the displaced fibres of the cruciate ligament are restored to their correct position. Small holes are drilled in the bone in the area where the cruciate ligament attaches so that stem cells can escape from the bone marrow. These lead to the healing of the cruciate ligament. Advantages of this technology: The patient’s own cruciate ligament is preserved. There is no need to remove a tendon from anywhere else on the body. It is a minor procedure with a significantly lower risk of complications compared to replacing the cruciate ligament. Sporting activities can be resumed earlier. A healing response can only be carried out in the first few weeks after the anterior cruciate ligament injury.

Our practice specialises in this technique. 

The inner and outer meniscus have a shock absorbing function in the knee joint. They act as a buffer between the heads of the two bones, the femoral condyle and the tibial plateau. Meniscus damage can result from general wear and tear in the knee or from an accident (twisting of the knee joint). The inner meniscus is affected far more frequently. Not all meniscus damage requires immediate surgery. Conservative treatment is often possible, especially in the case of wear-related damage. Depending on the extent of the meniscus tear, an operation may be necessary; this is carried out arthroscopically. As a rule, the damaged parts of the meniscus that have lost their buffering function are removed. A rupture of the meniscus caused by an accident should be reaffixed (sutured) under certain circumstances. In rare cases, meniscus replacement is required. A synthetic meniscus implant is sewn into the defective area of the damaged meniscus. 

If there is significant, wear-related damage to the cartilage covering on the knee joint and there is pain and restricted mobility, and if the conservative treatment options have been exhausted, the fitting of a knee prostheses may have to be considered. The worn cartilage coating (wear and tear) is replaced by a state-of-the-art metal surface. In the event of unilateral wear, a partial knee prosthesis can be implanted, in which only the affected section of the knee is replaced. However, if the cartilage damage has affected a large part of or the entire knee, we recommend a full prosthesis with renewal of the entire surface. The meniscus, which among other things serves as a shock absorber between the respective bone surfaces, is replaced by a durable special plastic. In certain cases, computer navigation, or personalised knee prosthesis created for the patient on the basis of a 3D reconstruction, has also proven its worth.

All of the above methods are only performed by our highly specialised knee experts. 

Your knee specialists in our practice

Dr Carsten Helfrich

Specialist for Orthopaedic Surgery and
Traumatology of the Musculoskeletal System

Main focus: hips, knees


Dr Caspar Steiner

Specialist in orthopaedic surgery and traumatology of the musculoskeletal system FMH

Main focus: Foot, Ankle joint

Dr Christian Mauch

Specialist in orthopaedic surgery and traumatology of the musculoskeletal system FMH

Main focus: Shoulder, knee


Dr Urs Kohlhaas

Specialist for Orthopaedic Surgery and
Traumatology of the Musculoskeletal System
Sports medicine, SEMS

Main focus: hips, knees



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