Welcome to the Joint Centre Berlin (Gelenkzentrum)

Click on the terms to go directly to the section:

    1. Introduction
    2. Your Experte – Dr. Rahmanzadeh
    3. Case studies and insights
    4. The advantages of our surgical method
    5. Hallux rigidus
    6. Portrait & Vita – Dr. Rahmanzadeh
    7. Current case studies
    8. About the Joint Centre Berlin (Gelenkzentrum)
    9. Contact us



Your mobility and agility are
Basic requirements for an active life.


The Joint Centre Berlin is a highly specialized institution for hip and knee joint replacement as well as foot surgery. With innovative operating methods and many years of experience, the Joint Centre Berlin aims at helping restore mobility and agility for patients – as a prerequisite for an active lifestyle – whilst offering patients a high level of comfort and quick healing process. The Joint Centre attaches special importance to individual care of patients by the entire team, also during hospitalization.

Our three surgical disciplines are characterized, in particular, by mild treatment of soft parts (muscles, tendons) and bone-sparing techniques which usually allow a rapid return to everyday life. The Joint Centre Berlin uses the most widespread and proven implants, thus also meeting the highest demands regarding scientific certification.

Your expert in forefoot surgery, hip surgery and knee surgery – Dr. Rahmanzadeh

Since August 2012, Dr. Masyar Rahmanzadeh has been manager and medical director of the Hygiea clinic. Already at the beginning of the year, Dr. Rahmanzadeh had acquired the Hygiea clinic, built in 1909 as a hospital in Berlin. Since the mid-1950s, the Hygiea clinic has served as an attending physician’s hospital encompassing several departments such as surgery, orthopaedics, urology, ophthalmology, plastic surgery and ENT medicine.

The endoprosthetic section is currently being extended. In his new function, Dr. Rahmanzadeh has also relocated his entire surgical program to the Hygiea clinic (endoprosthetics for hip and knee joints as well as and foot surgery). A use of internationally best proven implants, as well as Dr. Rahmanzadeh’s many years of experience contribute to optimization of surgical results. The healing process is supported by first-class medical care provided on an individual basis by nursing staff during hospitalization, as well as spacious patient rooms. Because the Hygiea clinic is not a training hospital, patients there enjoy the benefit of being operated exclusively by experienced physicians.

Dr. Masyar Rahmanzadeh – manager and medical director of the Hygiea clinic

Visit us at Instagram – Case studies and insights

Satisfied patients are the best business card. On our Instagram profile, interested parties can get an impression of the chances and possible results of a surgical correction intervention on the forefoot. Furthermore, Dr. Rahmanzadeh regularly posts insights and news from his professional and private environment.

instagram-gelenkzentrum You will find current case studies here:

The special features and advantages of the surgical method according to Dr. Rahmanzadeh

With more than 11,000 hallux valgus corrections performed, Dr. Rahmanzadeh is considered a luminary in forefoot surgery. The highly qualified surgeon is constantly perfecting the surgical technique he has specially developed. These are always small nuances that contribute to the further optimization of the procedure. For example, the titanium plate developed and used by Dr. Rahmanzadeh is already in its fourth generation and enables even more precise correction of the interlocking bone structure of the foot.

One of the special features of the technique according to Dr. M. Rahmanzadeh is without doubt the early loading capacity of the foot or feet after the surgical procedure. After three days at the latest, patients can usually put full weight on the treated area again without having to rely on a plaster cast or walking aids. The postoperative complications and pain are also significantly lower with the method according to Dr. Rahmanzadeh than with other methods.

The fast healing process is made possible by the special sawing technique on the first metatarsal bone and by the specially shaped and extremely stable titanium plate. A simultaneous surgical correction on both sides is also usually possible without problems. The inpatient stay is limited to about three days, even if both feet are operated on.

In about two thirds of his hallux patients, Dr. Rahmanzadeh immediately operates on both feet in one session. These often include extreme malpositioning and revision procedures of previous (failed) hallux corrections, which were considered inoperable by other clinics and colleagues in the field. In addition, the special surgical technique according to Dr. Rahmanzadeh reduces the recurrence of a malposition to a minimum.

Hallux rigidus – correction without stiffening

In our Berlin Joint Center, Dr. Rahmanzadeh not only assists patients with hallux valgus of all degrees of severity, but the treatment of hallux rigidus is also one of the core competencies of the experienced surgeon. Hallux rigidus is an arthrosis of the base of the big toe. This is the joint between the first metatarsal bone and the big toe. Often the oblique position of the big toe (hallux valgus) leads to a hallux rigidus.

The conventional treatment of hallux rigidus usually involves stiffening when the metatarsophalangeal joint of the big toe is already severely worn and causes pain. The so-called arthrodesis (stiffening operation) completely eliminates mobility through bone fusion. Although this usually reduces movement pain and restores resilience, most patients are dissatisfied with the stiffened result.

Dr. Rahmanzadeh’s surgical method is performed without the need for joint stiffening. Moreover, Dr. Rahmanzadeh’s technique – which is unique in the world – is able to restore mobility to joints that have already been stiffened. For many of the patients, this “origin surgery” means a significantly improved quality of life.

Dr. Masyar Rahmanzadeh – Portrait

Dr. Masyar Rahmanzadeh_Porträt

Dr. Masyar Rahmanzadeh’s professional career has taken him to nationally and internationally renowned orthopedic surgical clinics. These include Heidelberg University Hospital, Charité Berlin, Mayo Clinic in Rochester (Minnesota, USA), Hospital for Special Surgery in New York City (New York, USA) and Harvard Medical School in Boston (Massachusetts, USA).

Dr. Masyar Rahmanzadeh specializes in the surgical treatment of degenerative joint diseases of the lower extremities. The focus of his surgical activities is on artificial joint replacement of the hip and knee as well as on the surgical correction of complex deformities of the forefoot.


short vita:

1995: 3rd state examination and doctorate at the Free University of Berlin; assistant doctor at the Surgical Clinic of the Krefeld Clinic and at the Orthopaedic University Hospital Heidelberg

2001: Specialist in surgery; licensed by the Berlin Medical Association

2001: Foundation of the Berlin Joint Center – Center for Hip and Knee Joint Replacement and Foot Surgery

2011-2015: Managing Medical Director of Hygiea Clinic

2016: Chief physician of the Vivantes Klinikum Am Urban (KAU) for the sections endoprosthetics hip and knee as well as foot surgery


Special Fields:

  • Conventional joint replacement of hip and knee
  • Surface replacement at the hip joint
  • Corrective interventions for axial misalignments at hip and knee joint
  • Surgical correction of complex forefoot deformities (hallux valgus, hallux rigidus)


  • German Society for Endoprosthetics (Deutsche Gesellschaft für Endoprothetik e. V. (AE))
  • Association of South German Orthopedists and Trauma Surgeons (Vereinigung Süddeutscher Orthopäden und Unfallchirurgen e. V. (VSOU))
  • Society for Foot and Ankle Surgery (Gesellschaft für Fuß- und Sprunggelenkchirurgie e. V. (GFFC))
  • German Association for Foot and Ankle (Deutsche Assoziation für Fuß und Sprunggelenk e. V. (D.A.F.))

Case study:
Hip joint – surface replacement according to McMinn

Case study:
1 week after surgery – right knee endoprosthesis

Joint Center Berlin – 1 week after knee endoprosthesis (right)

Case study:
1 week after surgery – right knee joint replacement

Gelenkzentrum Berlin – 1 week after knee joint replacement surgery (right)

Case study: Patient, male – 3 DAYS AFTER OP

Left patient with knee prosthesis left, right patient with hip surface replacement left.
In both cases walking under full load is possible already 3 days after surgery.



With this information portal, we would like to offer you the opportunity to familiarize yourself in advance with our facility, our techniques and methods, as well as our operational focus. For this purpose we have prepared some general information for you on the following pages.

The next step on the way to solving your health problem is an individual recording of your findings. There are various ways of contacting us for this purpose.

Our staff will be happy to provide you with further information or to arrange an examination or consultation appointment with the treating physicians.

Joint Centre Berlin

phone-blaue-icon Tel.: +49 30 310 13 007

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Address & Postbox:
Kurfürstendamm 170
10707 Berlin

Email: info@gelenkzentrum.de

Opening times (phone):
Monday - Friday: 10 am - 2 pm

Phone: +49 30 310 13 007
Telefax: 030 – 959 998 709

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