Core Concepts

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.

We have Titled Musculoskeletal Physiotherapists

“They employ advanced clinical assessment and diagnosis methods, and have been trained in a broader range of treatment techniques than many other health professionals. As a result, APA Musculoskeletal Physiotherapists are world-leaders in the diagnosis, treatment and prevention of muscle and joint problems, especially low back and neck pain.” – Australian Physiotherapy Association

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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. Nelda is a 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 and Men's Health

For women and men at all stages of life we will provide you with the appropriate treatment. • Pelvic and lower back pain • Incontinence, prolapse and pelvic floor management

Core Concepts in Exercise

Whether as an individual in pairs or in a small group there is an exercise program available to suit you. • Individual exercise programs • Group and One on One reformer pilates • Back strengthening programs • Knee strengthening programs (GLA:D)

GLAD Australia

Telehealth Services

Our experienced physiotherapists provide online consultations for your convenience and safety.

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.

Online Bookings

Use our convenient online booking calendar to make an appointment at a time that suits you.

Nelda Petschack - Principal Physiotherapist

Nelda 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 is an ALA accredited Lymphoedema Practitioner and the NSW representative for PINC & STEEL Australia. Nelda uses a combination of manual techniques, neuromuscular exercise and postural training.

Heather York - Associate Physiotherapist

Heather is a skilled physiotherapist, completing her Master of Physiotherapy at the University of Sydney in 2014. She has a particular interest in caring for those who have experienced a breast cancer diagnosis and for those who have developed lymphoedema. To this end, she gained her Level 1 qualification as a specialised lymphoedema therapist in 2016 and has since worked primarily in this field. Heather is passionate about listening to the concerns of her clients and helping them to understand their condition better and achieve their individual goals.

Robyn Dearnley - Associate Physiotherapist​

Robyn specialises in keeping seniors active and independent. She is a physiotherapist with over 30 years' experience in private practice, residential aged care and community services. Robyn has spent 7 years leading the Stepping On Falls Prevention Program for seniors on Sydney’s North Shore and now focuses on exercise classes and home visits to keep seniors moving well at home.

Ciara Longworth - Admin Assistant

Ciara is our wonderful admin assistant and a great asset to our team, Ciara has recently moved to Sydney and is currently splitting her time between jobs. She's hoping to attend uni and, as a keen athletics fan, is excited about the opportunity to throw herself into sport while she's here.

Our Locations

We are conveniently located in Drummoyne and Mosman where we offer a full range of physiotherapy services.



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

Book at Drummoyne


At our Mosman location we operate from the Pilates Centre where we provide individual consultations and one on one pilates programs

Book at Mosman

Have a Question?


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