Paediatric Orthopaedics

Dr Claudia Maizen

MBBS, BSc (Hons), MRCS, FRCS (Tr&Orth)
Over 20 years experience in treating all paediatric orthopaedic conditions including paediatric fractures and injuries with a specific interest and expertise in the management of developmental dysplasia of the hip (DDH) and treatment of neuromuscular conditions (ie cerebral palsy).

Dr Claudia Maizen

Holds MBBS and BSc (HONS) degrees in paediatric orthopaedics
49+ publications and 428 citations in her field
Fluent in both English and German

BIO

Ms. Claudia Maizen is a leading children’s orthopaedic consultant renowned for her compassionate approach and unwavering dedication to her young patients. As an accomplished surgeon based at The Royal London Hospital, part of the Barts Health NHS Trust, she delivers top-tier medical care, specializing in the full range of paediatric orthopaedic disorders for children of all ages.

Her clinical focus is substantial, with a particularly strong interest in children’s trauma and the comprehensive treatment of neuromuscular conditions, such as cerebral palsy. However, her expertise does not end there. Dr. Maizen is exceptionally skilled in managing hip conditions like hip dysplasia (DDH), Perthes disease and slipped capital femoral epiphysis (SCFE), as well as various complex conditions that require deformity correction with guided growth surgery, and treatments for foot and ankle issues in children.

In her practice, Dr. Maizen prioritizes non-surgical interventions wherever possible. She values taking time with her patients and their families to educate them on the nature of orthopaedic care and the potential for non-invasive treatments. Surgery is reserved for cases where it is deemed absolutely necessary, as Ms. Maizen strongly believes that not all orthopaedic concerns warrant surgical procedures. Her comprehensive initial consultations ensure a thorough understanding of each child’s unique situation before recommending effective treatment.

A graduate of the prestigious University Children’s Hospital Graz in Austria, one of the country’s largest paediatric referral centres, Dr. Maizen was mentored by the esteemed Professor Graf. Under his tutelage, she honed her special interest in hip ultrasound screening and treatment for DDH, co-authoring the influential book “Sonography of the Infant’s Hip.” Her academic prowess is reflected in her substantial body of work, which includes numerous book chapters and publications in peer-reviewed journals. She is also a primary investigator for various multicentre studies and serves as a reviewer and subspecialty editor in her field.

As a founding and board member of the International Interdisciplinary Consensus Committee for DDH Evaluation (ICODE), and chair of the education committee, she is actively involved in shaping the future of international hip Ultrasound training and DDH screening. In addition, she takes an active role in various committees dedicated to promoting excellence in her field.

Her passion for education is evident in her involvement in international courses, including the prestigious Graf hip Ultrasound courses that she organises in London. Beyond her practice, Dr. Maizen’s humanitarian spirit shines through her work in Africa and Mongolia, where she not only delivers essential orthopaedic care to children but also shares her expert knowledge, training local surgeons to elevate the standard of care in these regions.

Since joining The Royal London Hospital as a consultant in 2010, Dr. Maizen has played a pivotal role in developing an esteemed paediatric neuromuscular service including a BTX service for children with cerebral palsy. Embracing a comprehensive approach, Dr. Maizen expertly treats a wide range of paediatric orthopaedic conditions, leveraging her extensive background also in paediatric trauma management to meticulously cater to the intricate needs of her young patients, aiding in their recovery and reintegration into normal childhood activities and growth. Dr. Maizen, drawing on her profound experience and innate compassion, is fervently dedicated to improving the orthopaedic health and well-being of children both in her immediate community and globally.


SPECIAL INTERESTS

Dr Maizen exclusively treats paediatric patients under 18 years with orthopaedic conditions.

Paediatric Orthopaedics;

Childrens Fractures & Injuries;

Diagnosis and treatment of Hip Dysplasia (DDH)

Perthes

SCFE

Neuromuscular Patients (ie Cerebral Palsy);

Hip dislocations

Gait improvement surgery

Botulinum toxine injections for treatment of spasticity

Paediatric and adolescent foot and ankle deformities

Bunions

Flat feet

Clubfoot

Cavovarus foot deformity

Newborn Orthopaedic Assessment

Gait assessment

Scoliosis Assessment

Skeletal Dysplasias

PROFILES

PROFESSIONAL BACKGROUND

MBBS BSc (Hons) MRCS FRCS (Trauma & Orth)

Books

R. Graf, C. Maizen, T. Seidl

Sonography of the infants hip: Principles, implementation and therapeutic consequences, Springer, Ed. 2024, ISBN-10 3031719484, ISBN-13 978-3031719468

Book Chapters

Maizen C. Chlapoutakis K., Persaud T.: Comparison of Sonographic Techniques, Developmental Dysplasia of the hip 01/2022. DOI: 10.1007/978-3-030-94956-3_10

Chlapoutakis K., Kolovos S., Tarrant A.,  Maizen C.: Hip Sonography According to Graf, Developmental Dysplasia of the hip 01/2022. DOI: 10.1007/978-3-030-94956-3_9

Persaud T., Chlapoutakis K., Maizen C., Baltas C.: Freehand Sonographic Techniques, Developmental Dysplasia of the hip 01/2022. DOI: 10.1007/978-3-030-94956-3_8

AlQuemzi M., Maizen C., DePellegrin M., Alshryda S.: Early Detection of Hip Dysplasia, Developmental Dysplasia of the hip 01/2022. DOI: 10.1007/978-3-030-94956-3_7

Kolovos S., Maizen C., DePellegrin M., Placzek R.: Sonographic Based Treatment, Developmental Dysplasia of the hip 01/2022. DOI: 10.1007/978-3-030-94956-3_11.

Placzek R., Maizen C., DePellegrin M., Kolovos S.: Further Treatment, Developmental Dysplasia of the hip 01/2022 DOI: 10.1007/978-3-030-94956-3_12

Tzatzairis T., Nivatsi M., Maizen C.: Child Safeguarding, Paediatric Orthopaedics for Primary Healthcare, 06/2021, pages 283-292, DOI: 10.1007/978-3-030-65214-2_12

Joanna Thomas, Claudia Maizen: Trauma of the Knee. Paediatric Orthopaedic Trauma in Clinical Practice, 01/2015: pages 105-127; , ISBN: 978-1-4471-6755-6

Anna C. Peek, Claudia Maizen: Ankle Injuries. Paediatric Orthopaedic Trauma in Clinical Practice, 01/2015: pages 145-159; , ISBN: 978-1-4471-6755-6

Journal Publications

A. Cosgrove, C. Maizen. Detection and treat,ment of developmental dysplasia of the hip (DDH) in infants: Updates and recommendations. Current opinion in Paediatrics 2025 Feb 1;37(1):88-93. Doi: 10.109/MOP.0000000000001420.Epub 2024 Nov 28.PMID: 39699106

K. Chlapoutakis, J O’Beirne, B. Dubs, C. Maizen, S. Placzek, C. Casini, T.Tzatzairis ICODE hip US calculator: a mobile phone aid to screening with Graf’s sonographic technique. Journal of Ultrasonography. 2024 Dec 23;24(99):1-5.doi:10.15557/jou.2024.0033. PMID:39720469; PMCID: PMC11665053

N. Burkitt, E. Karam, d. Ferguson, D. Pinto, C. Maizen: A systematic review of DDH screening practices in the UK. Explor Musculoskeletal Dis. 2024; 2:181–8. https://doi.org/10.37349/emd.2024.00047

Jones NJ, Zarook E, Ayub A, Manoukian D, Maizen C, Bijlsma P, Ramachandran M, Firth G. Postoperative Immobilization Period for Pediatric Supracondylar Fractures: The Shorter the Better? J Pediatr Orthop. 2024 Apr 1;44(4):203-207. doi: 10.1097/BPO.0000000000002636. Epub 2024 Feb 8. PMID: 38329322.

K. Chlapoutakis, C. Maizen, S. Placzek, J O’Beirne, B. Dubs, C. Casini, T.Tzatzairis: Hip sonography according to Graf: practical notes for the student, the examiner and the reviewer. Med Ultrason 2023:0, 1-13 Online first, DOI 10.11152/mu-4194

A. Ayub, C. Graff, L.M. Horvath, C. Maizen: Hip reconstruction in cerebral palsy: Lessons from a single center and 137 hips, J Childrens Orthopaedics, Sept 23, DOI:10.1177/18632521231196846, CC BY-NC4.0

A Zaghloul, D Manoukian, M Barrett, I Geronta, C Maizen: Functional and ClinicalOutcomes of Combined Simultaneous Bilateral Anterior Distal Femoral Plate Hemiepiphyseodesis and Hamstrings Release in Management of Knee Flexion Contractures in Children With Neuromuscular Disorders. J Pediatric Orthopedics 10/2021; Vol41-9: p559-565. DOI:10.1097/BPO.0000000000001942

T Tzatzairis, G Firth, P Bijlsma, C Maizen, M Ramachandran: Radiation Exposure in The Treatment of Paediatric Supracondylar Humerus Fractures: Comparison of Two Fixation Methods. Open Orthopaedic Journal, 04/2021; Vol 15: p22-26. DOI:102174/1874325002115010022

T Tzatzairis, S McMahon, J Shilpa, C Maizen: Safety and efficiacy of tranexamic acid in children with cerebral palsy undergoing femoral varus derotation osteotomy: a double cohort study. European Journal of Orthopaedic Surgery & Traumatology, 08/2020, 30, 1039-1044. DOI: 10.1007/s00590-020-02663-w

R Tillmann, C Maizen, H Jefferson, E Woodward, L Burkwood: Reaching out to children with disabilities: setting up an outreach service to bring patient care closer to home. Physiotherapy 05/2020, Vol 107/1,E70. DOI: 10.1016/j.physio.2020.03.095

A Hebda-Boon, C Maizen, P Bijlsma, G Firth, D Morrissey: Maximising impact of gait analysis reports on non-surgical management of children with neurodisability-clinical service evaluation. Physiotherapy, 05/2020, Vol107-1, E68. DOI: 10.1016/j.physio.2020.03.092

R Tillmann, C Maizen, P Bijlsma, G Firth: Cerebral Palsy integrated pathway (CPIP) of hip surveillance, for children with non- cerebral palsy diagnosis? Physiotherapy, 05/2020. Vol 107-1, E208-E209. DOI: 10.1016/j.physio.2020.03.307

J O’Beirne, K Chlapoutakis, […] C Maizen […] A Tarrant: International Interdisciplinary consensus meeting on evaluation of developmental dysplasia of the hip. Ultraschall in der Medizin, 06/2019. DOI: 10.1055/a-0924-5491

J Wright, D Coggings, C Maizen, M Ramachandran: Reverse Ponseti-type treatment for children with congenital vertical talus: Comparison between idiopathic and teratological patients. Bone and Joint Journal 02/2014; 96-B(2):274-8. DOI:10.1302/0301-620X.96B2.32992

P Puchwein, B Jester, B Freytag, K Tanzer, C Maizen, R Gumpert, W Pichler: The three-dimensional morphometry of the odontoid peg and its impact on ventral screw osteosynthesis. Bone and Joint Journal 04/2013; 95-B(4):536-42. DOI:10.1302/0301-620X.95B4.30949

Ernst B Zwick, Tanja Kraus, Claudia Maizen, Gerhardt Steinwender, Wolfgang E Linhart: Comparison of Ponseti versus Surgical Treatment for Idiopathic Clubfoot: A Short-term Preliminary Report. Clinical Orthopaedics and Related Research 05/2009; 467(10):2668-76. DOI:10.1007/s11999-009-0819-5

M. Švehlík, E. B. Zwick, G. Steinwender, V. Saraph, F. Schneider, C. Maizen, T. Kraus, W. Linhart: O016 Peak lengthening velocity differs between fixed versus dynamic equines deformity in children with cerebral palsy. Gait & Posture 09/2008; 28. DOI:10.1016/S0966-6362(08)70016-X

Vinay Saraph, Ernst Bernhard Zwick, Gerhardt Steinwender, Claudia Auner, Frank Schneider, Wolfgang Linhart: Leg lengthening as part of gait improvement surgery in cerebral palsy: An evaluation using gait analysis. Gait & Posture 02/2006; 23(1):83-90. DOI:10.1016/j.gaitpost.2004.12.003

Vinay Saraph, Ernst-Bernhard Zwick, Claudia Auner, Frank Schneider, Gerhardt Steinwender, Wolfgang Linhart: Gait Improvement Surgery in Diplegic Children. Journal of Pediatric Orthopaedics 05/2005; 25(3):263-7. DOI:10.1097/01.bpo.0000151053.16615.86

Vinay Saraph, Ernst-Bernhard Zwick, Claudia Maizen, Frank Schneider, Wolfgang E Linhart: Treatment of unicameral calcaneal bone cysts in children: Review of literature and results using a cannulated screw for continuous decompression of the cyst. Journal of Pediatric Orthopaedics 09/2004; 24(5):568-73. DOI:10.1097/00004694-200409000-00019

Vinay Saraph, Ernst-Bernhard Zwick, Claudia Maizen, Frank Schneider, Wolfgang E. Linhart: Treatment of Unicameral Calcaneal Bone Cysts in Children. Journal of Pediatric Orthopaedics 01/2004; 24(5):568-573. DOI:10.1097/01241398-200409000-00019

H W Auner, C Tinchon, R I Brezinschek, M Eibl, S Sormann, C Maizen, W Linkesch, R Schmon-Kampel, F Quehenberger, A Tiran, H Sill: Monitoring of cardiac function by serum cardiac troponin T levels, ventricular repolarisation indices and echocardiography after conditioning with fractioned total body irradiation and high-dose cyclophosphamide. European Journal Of Haematology 08/2002; 69(1):1-6. DOI:10.1034/j.1600-0609.2002.01661.x

BJ Yazdani-Biuki, RI Brezinschek, T Doerner, AM Jakobi, C Maizen, HP Brezinschek: Preferential utilization of D segments in hydrophobic reading frames in antibodies is a specific feature of SLE but not RA or normal B-cells.. Arthritis & Rheumatology 09/2001; 44(9):S76-S76.

Applications:

ICODE hip US calculator for medical professionals (2023 App Store and Google play)

SPECIALISM CONDITIONS

TREATMENT LOCATIONS

UME Health
17 Harley Street
London W1G 9QH

Cromwell Hospital
164-178 Cromwell Road
London SW5 0TU

Refuah Medical Centre
91-93 Stamford Hill
London N16 5TP

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