Core Concepts has a personal and caring approach to working with our clients. Our experienced and qualified physios provide evidence-based care specifically to meet your goals and needs on a very practical level. 

It starts at the Core

We believe that your wellbeing starts from within. We make it our mission to get the the core of an issue and not just treat the symptoms. We provide highly specialised treatment for your individual body.

Core Concepts in Physiotherapy

Have you experienced or are recovering from an injury or ongoing pain? With 30 years in private practice, Nelda is a highly qualified APA Titled Musculoskeletal Physiotherapist. Providing long and short term management with hands on treatment of injuries and pain throughout the whole body.

Core Concepts in Cancer Recovery

Coping with and recovering from cancer treatment can be a confronting experience. We are here to help you through all stages, from pre-surgery, during chemotherapy, radiation and recovery following all cancer treatments. Qualified Pinc & Steel and Next Steps Practitioner.

Core Concepts in Lymphoedema

We are an ALA Accredited Practice treating both primary and secondary lymphoedema. Bioimpedance technology is used for the early detection of fluid changes before and after surgery and radiotherapy. • Lymphoedema monitoring • Manual lymphatic drainage • Garment fitting • Laser and soft tissue physiotherapy

Core Concepts in Women's Health

For women at all stages of life from girlhood to adolescence, during and following pregnancy and with menopause and beyond. No matter what stage you are at we will provide you with the appropriate treatment. • Pelvic and lower back pain • Incontinence, prolapse and pelvic floor management

Core Concepts in Exercise

Working in a small group can be a great way to motivate and support each other. If you would like to join a group or if you have a group of three or four people and would like to get started please get in touch.

Experienced and Personal

Our experienced physiotherapists are best able to treat the problem and the whole person.

Cancer Recovery Specialists

Accredited Lymphoedema practitioners to assist in your recovery of all stages of cancer treatment.

Women's Health

We consider the specific aspects of a woman's body as it adapts through changes in shape and posture.

Clinical Pilates

Physiotherapist led Pilates improves core muscle, strength, posture and flexibility.

Exercise Programs

Join one of our many fun programs and keep moving as you improve your health and wellbeing.

Convenient Times and Locations

We provide services from four convenient locations in Sydney. Please call 0410 685 073 to book an appointment.


Nelda Petschack is an APA titled Musculoskeletal Physiotherapist and Australasian accredited Lymphoedema practitioner. Nelda has over 30 years experience working in private practice in London and Sydney. Graduating with a Bachelor of Physiotherapy in 1988 from the University of Sydney Nelda went on to further her study specialising in Musculoskeletal Physiotherapy completing a Masters in 2002.

Nelda uses a combination of manual techniques, neuromuscular exercise and postural training.

Our Locations

We are conveniently located Drummoyne, Balmain and Kirribilli where we offer a full range of physiotherapy services.



At our CBD rooms we provide individual consultations and one on one pilates programs



At our studio in Drummoyne we provide all physiotherapy services with individual consultations, clinical pilates and group exercises



Our rooms in Balmain are within the Doctors on Darling medical practice. We offer individual consultations with a focus on women's health and lymphoedema



At Kirribilli studio we offer clinical pilates, exercise classes and individual consultations

Have a Question?


We are open everyday and work between our four locations. Please call to find a time and place convenient for you.