Publications

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2014
Youssef, A. R., W. F. Hafez, khaled ayad, and E. S. B. Saweeres, "Mobilization and taping in treatment of shoulder impingement syndrome", APTA CSM, Las Vegas, Nevada, USA, 2014.
Hafez, W. F., A. R. Youssef, khaled ayad, and E. S. B. Saweeres, "Mobilization with Movement Combined With Taping Restores Shoulder Function and Mobility in Shoulder Impingement Syndrome", 15th EFORT Congress, London, UK, 2014.
Moursi, A., khaled ayad, and A. R. Youssef, "Mulligan compared to Maitland mobilization in treatment of diabetic frozen shoulder", APTA CSM, Las Vegas, Nevada, USA, 2014.
Menam, E. A. E., A. R. Youssef, and A. Balbaa, "Multi-modal versus patient centered treatment for cervical radiculopathy", APTA CSM, Las Vegas, Nevada, USA, 2014.
Bakry, M. G., A. R. Youssef, E. S. B. Saweeres, and A. A. Balbaa, "Photogrammetric Analysis (PA) In Assessing Lower Limb Static Alignment", 15th EFORT Congress, London, UK, 2014.
Youssef, A. R., and M. G. Bakry, "Shaken Baby Syndrome: A Biomechanical Drastic Event", the Fifth Forensic Summer School "Domestic Violence Prevention: Challenges and Opportunities", Learning Resource Center (LRC), Kasr Al-Aini Medical School, 2014.
Ali, H., khaled ayad, A. R. Youssef, and W. Awadallah, "Shoulder Recovery with Glenoid Labrum Removal versus preservation During Latarjet Repair of Anterior Shoulder instability", 15th EFORT Congress, London, UK, 2014.
Bakry, M. G., and A. R. Youssef, "Static Lower Limb Alignment Asymmetry in Healthy Adults", APTA NEXT Conference and Exposition , Charlotte, North Carolina, USA, 2014.
2013
Youssef, A. R., and M. G. Bakry, "Bilateral Static Lower Limb Asymmetry in Egyptian Young Adults", 9th International Deformity Correction Conference, Mena House Oberoi Hotel, Cairo, Egypt, 2013.
Bakry, M. G., A. R. Youssef, S. ES, and B. AA, "Clinical assessment of lower limb static alignment using the Photogrammatic method", 9th International Deformity Correction Conference, Mena House Oberoi Hotel, Cairo, Egypt, 2013.
Youssef, A. R., A. AO, and M. NF, "Clinical Measurement of Head and Neck Posture: Normative values", 9th International Deformity Correction Conference, Mena House Oberoi Hotel, Cairo, Egypt, 2013.
Youssef, A. R., and H. GA, "Effects of Functional weight-bearing exercises on patients undergoing tibial ‎lengthening", 9th International Deformity Correction Conference, Mena House Oberoi Hotel, Cairo, Egypt, 2013.
NF, M., A. R. Youssef, N. AO, B. MG, M. DM, and B. AA, "Forward head posture as a function of head and neck anthropometry. :Physical Therapy: The future of the Treatment", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
A., O., M. NF, A. R. Youssef, R. H., and B. AA., "Measurement of cranio-vertebral angle with electronic head posture instrument and head posture spinal curvature instrument: a reliability study", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
AM, I., A. R. Youssef, and A. KE, "Mulligan’s versus Maitaland’s mobilization in the treatment of diabetic frozen shoulder", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
A, K., A. R. Youssef, A. KA, and H. GA, "Muscle Recovery with Exercise During Distraction Osteogenesis", 9th International Deformity Correction Conference, Mena House Oberoi Hotel, Cairo, Egypt, 2013.
A, A., N. A, A. R. Youssef, and I. MM, "Neuro-Muscular Electrical Stimulation Combined with Ponseti Method for Correction of Idiopathic Club", 9th International Deformity Correction Conference, Mena House Oberoi Hotel, Cairo, Egypt, 2013.
A, N., A. R. Youssef, A. A, and I. MM, "Neuromuscular electrical stimulation combined with Ponseti method for correction of idiopathic clubfoot.", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
Youssef, A. R., "Rehabilitation of Patients during distraction osteogenesis procedures. The future of pediatric rehabilitation", The 1st annualconference of Resala center for special needs in collaboration with the faculty of Physical Therapy, Cairo university, cairo, 2013.
AO, A., A. R. Youssef, M. NF, R. H, and B. A, "The Role of Exercise in Preventing Forward Head Posture.", 9th International Deformity Correction Conference, Mena House Oberoi Hotel, Cairo, Egypt , 2013.
WF, H., A. R. Youssef, S. ES, and A. KE, "Shoulder function and mobility after mobilization with movement and taping in treatment of impingement syndrome. :Physical Therapy", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
Bakry, M. G., A. R. Youssef, S. ES, and B. AA, "Validity and reliability of photogrammetric method in assessing lower limb static alignment", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
E, A. E. - M., A. R. Youssef, and B. AA, "What should we choose to treat cervical radiculopathy: a multimodal or individualized physical therapy program?", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
2011
Fortuna, R., M. A. Vaz, A. R. Youssef, D. Longino, and W. Herzog, "Changes in contractile properties of muscles receiving repeat injections of botulinum toxin (Botox).", Journal of biomechanics, vol. 44, issue 1, pp. 39-44, 2011 Jan 04. Abstract

Botulinum toxin type A (BTX-A) is a frequently used therapeutic tool to denervate muscles in the treatment of neuromuscular disorders. Although considered safe by the US Food and Drug Administration, BTX-A can produce adverse effects in target and non-target muscles. With an increased use of BTX-A for neuromuscular disorders, the effects of repeat injections of BTX-A on strength, muscle mass and structure need to be known. Therefore, the purpose of this study was to investigate the changes in strength, muscle mass and contractile material in New Zealand White (NZW) rabbits. Twenty NZW rabbits were divided into 4 groups: control and 1, 3 and 6 months of unilateral, repeat injections of BTX-A into the quadriceps femoris. Outcome measures included knee extensor torque, muscle mass and the percentage of contractile material in the quadriceps muscles of the target and non-injected contralateral hindlimbs. Strength in the injected muscles was reduced by 88%, 89% and 95% in the 1, 3 and 6 months BTX-A injected hindlimbs compared to controls. Muscle mass was reduced by 50%, 42% and 31% for the vastus lateralis (VL), rectus femoris (RF) and vastus medialis (VM), respectively, at 1 month, by 68%, 51% and 50% at 3 months and by 76%, 44% and 13% at 6 months. The percentage of contractile material was reduced for the 3 and 6 months animals to 80-64%, respectively, and was replaced primarily by fat. Similar, but less pronounced results were also observed for the quadriceps muscles of the contralateral hindlimbs, suggesting that repeat BTX-A injections cause muscle atrophy and loss of contractile tissue in target muscles and also in non-target muscles that are far removed from the injection site.

2010
Youssef, A. R., L. D, S. E, S. R, L. T, and W. Herzog, "Cartilage Degeneration in Different Models of Osteoarthritis in the New Zealand Rabbit", 11th Alberta Biomedical Engineering conference, Banff, Alberta, Canada, 2010.
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