Oussama Abousamra

Title(s)Associate Professor of Clinical Orthopaedic Surgery
SchoolKeck School of Medicine of Usc
Address4640 West Sunset Blvd
Off Campus
Los Angeles CA 90027
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    1. Does Size Really Matter? Incidence of Periprosthetic Fractures After Femoral Osteotomy in Patients With Cerebral Palsy. J Pediatr Orthop. 2024 May-Jun 01; 44(5):e452-e456. Wimmer SP, Wren TAL, Rethlefsen SA, Abousamra ON, Kay RM. PMID: 38506352.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    2. Launching telemedicine in a tertiary ambulatory pediatric orthopedic clinic during the coronavirus disease-19 pandemic: a retrospective study. J Pediatr Orthop B. 2024 Jan 01; 33(1):97-102. Wong C, Bent MA, Omar H, Abousamra O. PMID: 36723520.
      View in: PubMed   Mentions:    Fields:    Translation:HumansPHPublic Health
    3. Ankle Mortise Instability in Multiple Hereditary Exostoses. J Foot Ankle Surg. 2022 Nov-Dec; 61(6):1240-1245. Ebaugh MP, Grenier G, Singh S, Abousamra O, Klingele K. PMID: 35370053.
      View in: PubMed   Mentions:    Fields:    
    4. What's New in Pediatric Orthopaedics. J Bone Joint Surg Am. 2022 02 16; 104(4):299-306. Andras LM, Whitlock PW, Abousamra O. PMID: 34932502.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    5. Absence of Peroneus Tertius in Split Anterior Tibialis Tendon Transfer Surgery. J Foot Ankle Surg. 2022 Jul-Aug; 61(4):886-887. Antoniak KS, Abousamra O. PMID: 35307159.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    6. Is Radiographic Imaging Necessary for Identifying Late Developmental Dysplasia of the Hip in Breech Infants with Normal Ultrasounds? Glob Pediatr Health. 2021; 8:2333794X211040977. Antoniak K, Lee C, Goldstein RY, Abousamra O. PMID: 34435084; PMCID: PMC8381449.
      View in: PubMed   Mentions: 2  
    7. Effect of Static Alignment on Dynamic Knee Abduction Moments in Adolescent Athletes with Recent ACL Reconstruction. Med Sci Sports Exerc. 2021 08 01; 53(8):1555-1560. Mueske NM, Abousamra O, Katzel MJ, Vandenberg CD, Pace JL, Feifer D, Wren TAL. PMID: 34261988.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    8. What's New in Pediatric Orthopaedics. J Bone Joint Surg Am. 2021 02 17; 103(4):287-294. Andras LM, Abousamra O. PMID: 33369978.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. Do seizures compromise correction maintenance after spinal fusion in cerebral palsy scoliosis? J Pediatr Orthop B. 2020 Nov; 29(6):538-541. Abousamra O, Sullivan BT, Shah SA, Yaszay B, Samdani AF, Cahill PJ, Newton PO, Sponseller PD. PMID: 31821271.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    10. Four-in-one Extensor Realignment for the Treatment of Obligatory or Fixed, Lateral Patellar Instability in Skeletally Immature Knee. J Pediatr Orthop. 2020 Oct; 40(9):503-508. Danino B, Deliberato D, Abousamra O, Singh S, Klingele K. PMID: 32555049.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    11. Response to: Titanium Elastic Nails Are a Safe and Effective Treatment for Length Unstable Pediatric Femur Fractures. J Pediatr Orthop. 2020 10; 40(9):e898-e899. Illingworth KD, Siddiqui AA, Abousamra O, Compton E, Meisel E. PMID: 32555050.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. Anterior distal femoral hemiepiphysiodesis with and without patellar tendon shortening for fixed knee flexion contractures in children with cerebral palsy. J Child Orthop. 2020 Oct 01; 14(5):415-420. Rethlefsen SA, Hanson AM, Wren TAL, Abousamra O, Kay RM. PMID: 33204349; PMCID: PMC7666790.
      View in: PubMed   Mentions: 5  
    13. Titanium Elastic Nails Are a Safe and Effective Treatment for Length Unstable Pediatric Femur Fractures. J Pediatr Orthop. 2020 Aug; 40(7):e560-e565. Siddiqui AA, Abousamra O, Compton E, Meisel E, Illingworth KD. PMID: 31770170.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    14. Hip Dysplasia Is Not More Common in W-Sitters. Clin Pediatr (Phila). 2020 10; 59(12):1074-1079. Rethlefsen SA, Mueske NM, Nazareth A, Abousamra O, Wren TAL, Kay RM, Goldstein RY. PMID: 32659120.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    15. Response to comment on Siddiqui et al: 'Femoral shaft fractures in children with non-ambulatory neuromuscular disorders can be effectively treated using flexible intramedullary nails'. J Child Orthop. 2020 Jun 01; 14(3):243-244. Illingworth KD, Siddiqui AA, Abousamra O, Meisel EM, Kay RM. PMID: 32582394; PMCID: PMC7302417.
      View in: PubMed   Mentions:
    16. Split Tibialis Anterior Tendon Transfer to The Peroneus Brevis or Tertius for the Treatment of Varus Foot Deformities in Children with Static Encephalopathy: A retrospective case series. J Am Acad Orthop Surg Glob Res Rev. 2020 05; 4(5):e2000044. Lullo B, Nazareth A, Rethlefsen S, Illingworth KD, Abousamra O, Kay RM. PMID: 33970577; PMCID: PMC7434038.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    17. Femoral shaft fractures in children with non-ambulatory neuromuscular disorders can be effectively treated using flexible intramedullary nails. J Child Orthop. 2020 Apr 01; 14(2):132-138. Siddiqui AA, Illingworth KD, Abousamra OA, Meisel EM, Kay RM. PMID: 32351626; PMCID: PMC7184642.
      View in: PubMed   Mentions: 3  
    18. Occiput-to-pelvis spinal arthrodesis: a case series. Spine Deform. 2020 02; 8(1):147-148. Hadad MJ, Abousamra O, Sullivan BT, Sponseller PD. PMID: 31981145.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    19. Deep Infections After Pediatric Spinal Arthrodesis: Differences Exist with Idiopathic, Neuromuscular, or Genetic and Syndromic Cause of Deformity. J Bone Joint Surg Am. 2019 Dec 18; 101(24):2219-2225. Sullivan BT, Abousamra O, Puvanesarajah V, Jain A, Hadad MJ, Milstone AM, Sponseller PD. PMID: 31609894.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    20. Occiput-to-Pelvis Spinal Arthrodesis: A Case Series. Spine Deform. 2019 11; 7(6):992-1002. Hadad MJ, Abousamra O, Sullivan BT, Sponseller PD. PMID: 31732013.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    21. Cervical Spine Deformities in Children With Rhizomelic Chondrodysplasia Punctata. J Pediatr Orthop. 2019 Oct; 39(9):e680-e686. Abousamra O, Kandula V, Duker AL, Rogers KJ, Bober MB, Mackenzie WG. PMID: 31503224.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    22. Closed vs open reduction in developmental dysplasia of the hip: The short-term effect on acetabular remodeling. J Clin Orthop Trauma. 2020 Mar-Apr; 11(2):213-216. Abousamra O, Deliberato D, Singh S, Klingele KE. PMID: 32099282; PMCID: PMC7026546.
      View in: PubMed   Mentions: 5  
    23. Long-term outcome of knee hyperextension in children with cerebral palsy. J Pediatr Orthop B. 2019 Jul; 28(4):345-350. Abousamra O, Connor J, Church C, Taylor D, Lennon N, Del Pilar Duque Orozco M, Henley J, Sees J, Miller F. PMID: 30649088.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    24. Valgus Hip Osteotomy in Children With Spondyloepiphyseal Dysplasia Congenita: Midterm Results. J Pediatr Orthop. 2019 Jul; 39(6):282-288. Bayhan IA, Abousamra O, Rogers KJ, Bober MB, Miller F, Mackenzie WG. PMID: 31169747.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    25. Thoracic Lordosis, Especially in Males, Increases Blood Loss in Adolescent Idiopathic Scoliosis. J Pediatr Orthop. 2019 Mar; 39(3):e201-e204. Abousamra O, Sponseller PD, Lonner BS, Shah SA, Marks MC, Cahill PJ, Pahys JM, Newton PO, Harms Study Group. PMID: 30260921.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    26. Three Methods of Pelvic Fixation for Scoliosis in Children With Cerebral Palsy: Differences at 5-year Follow-Up. Spine (Phila Pa 1976). 2019 Jan 01; 44(1):E19-E25. Abousamra O, Sullivan BT, Samdani AF, Yaszay B, Cahill PJ, Newton PO, Sponseller PD. PMID: 29939974.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    27. Sagittal Spinopelvic Parameters in Children With Achondroplasia. Spine Deform. 2019 01; 7(1):163-170. Abousamra O, Shah SA, Heydemann JA, Kreitz TM, Rogers KJ, Ditro C, Mackenzie WG. PMID: 30587311.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    28. Radiographic Analysis of the Pediatric Hip Patients With Hereditary Multiple Exostoses (HME). J Pediatr Orthop. 2018 Jul; 38(6):305-311. Duque Orozco MDP, Abousamra O, Rogers KJ, Thacker MM. PMID: 27328120.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    29. Foot and ankle deformities in children with Down syndrome. J Child Orthop. 2018 Jun 01; 12(3):218-226. Perotti LR, Abousamra O, Del Pilar Duque Orozco M, Rogers KJ, Sees JP, Miller F. PMID: 29951120; PMCID: PMC6005220.
      View in: PubMed   Mentions: 4  
    30. Prophylactic antibiotics in soft-tissue procedures in children with cerebral palsy. J Child Orthop. 2018 Jun 01; 12(3):279-281. Perotti LR, Abousamra O, Rogers KJ, Miller F, Sees JP. PMID: 29951128; PMCID: PMC6005213.
      View in: PubMed   Mentions: 1  
    31. Knee Deformities in Children With Down Syndrome: A Focus on Knee Malalignment. J Pediatr Orthop. 2018 May/Jun; 38(5):266-273. Duque Orozco MDP, Abousamra O, Chen BP, Rogers KJ, Sees JP, Miller F. PMID: 27328121.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    32. The effect of plantar flexor lengthening on foot pressure in ambulatory children with cerebral palsy. J Pediatr Orthop B. 2018 May; 27(3):200-205. Abousamra O, Schwartz J, Church C, Lennon N, Henley J, Niiler T, Miller F. PMID: 28953163.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    33. Risk factors for pancreatitis after posterior spinal fusion in children with cerebral palsy. J Pediatr Orthop B. 2018 Mar; 27(2):163-167. Abousamra O, Nishnianidze T, Rogers KJ, Er MS, Sees JP, Dabney KW, Miller F. PMID: 27509481.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    34. Magnetic Resonance Imaging in Symptomatic Children With Hereditary Multiple Exostoses of the Hip. J Pediatr Orthop. 2018 Feb; 38(2):116-121. Duque Orozco MDP, Abousamra O, Rogers KJ, Thacker MM. PMID: 27137903.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    35. What's New in the Management of Foot Deformities in Children With Cerebral Palsy. J Pediatr Orthop. 2018 Jan; 38(1):e20-e24. Heydemann JA, Abousamra O, Franzone JM, Kaufman BE, Sees JP. PMID: 27861211.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    36. Long-term Outcome of Internal Tibial Derotation Osteotomies in Children With Cerebral Palsy. J Pediatr Orthop. 2017 Oct/Nov; 37(7):454-459. Er MS, Abousamra O, Rogers KJ, Bayhan IA, Church C, Henley J, Niiler T, Miller F. PMID: 26491913.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    37. Long-term Outcome of External Tibial Derotation Osteotomies in Children With Cerebral Palsy. J Pediatr Orthop. 2017 Oct/Nov; 37(7):460-465. Er MS, Bayhan IA, Rogers KJ, Abousamra O, Church C, Henley J, Miller F. PMID: 26491914.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    38. Upper Cervical Fusion in Children With Spondyloepiphyseal Dysplasia Congenita. J Pediatr Orthop. 2017 Oct/Nov; 37(7):466-472. Serhan Er M, Abousamra O, Rogers K, Akyol Y, Palocaren T, Takemitsu M, Campbell JW, Mackenzie WG. PMID: 26683502.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    39. Persistence and Recurrence Following Femoral Derotational Osteotomy in Ambulatory Children With Cerebral Palsy. J Pediatr Orthop. 2017 Oct/Nov; 37(7):447-453. Church C, Lennon N, Pineault K, Abousamra O, Niiler T, Henley J, Dabney K, Miller F. PMID: 26636742.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    40. Infections of Intrathecal Baclofen Delivery Systems and Ventriculoperitoneal Shunting Systems: Clinical Series Discussion. Pediatr Neurosurg. 2018; 53(1):1-6. Abousamra O, Duque Orozco MDP, Rogers KJ, Miller F, Sees JP. PMID: 28866663.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansPHPublic Health
    41. Scoliosis in Down's syndrome. J Pediatr Orthop B. 2017 Jul; 26(4):383-387. Abousamra O, Duque Orozco MDP, Er MS, Rogers KJ, Sees JP, Miller F. PMID: 27548438.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    42. Hip Reconstruction in Children With Unilateral Cerebral Palsy and Hip Dysplasia. J Pediatr Orthop. 2016 Dec; 36(8):834-840. Abousamra O, Er MS, Rogers KJ, Nishnianidze T, Dabney KW, Miller F. PMID: 26057069.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    43. Hip Instability in Down Syndrome: A Focus on Acetabular Retroversion. J Pediatr Orthop. 2016 Jul-Aug; 36(5):499-504. Abousamra O, Bayhan IA, Rogers KJ, Miller F. PMID: 25887825.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    44. Reliability and validity of Edinburgh visual gait score as an evaluation tool for children with cerebral palsy. Gait Posture. 2016 09; 49:14-18. Del Pilar Duque Orozco M, Abousamra O, Church C, Lennon N, Henley J, Rogers KJ, Sees JP, Connor J, Miller F. PMID: 27344448.
      View in: PubMed   Mentions: 13     Fields:    Translation:Humans
    45. Correction of Pelvic Obliquity After Spinopelvic Fixation in Children With Cerebral Palsy: A Comparison Study With Minimum Two-Year Follow-up. Spine Deform. 2016 May; 4(3):217-224. Abousamra O, Nishnianidze T, Rogers KJ, Bayhan IA, Yorgova P, Shah SA. PMID: 27927506.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    46. Factors predicting postoperative complications following spinal fusions in children with cerebral palsy scoliosis. Eur Spine J. 2016 Feb; 25(2):627-34. Nishnianidze T, Bayhan IA, Abousamra O, Sees J, Rogers KJ, Dabney KW, Miller F. PMID: 26410446.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    47. Evaluation of intrathecal baclofen delivery system malfunction by computed tomography scan. Dev Med Child Neurol. 2016 Apr; 58(4):409-15. Abousamra O, Rogers KJ, McManus M, Miller F, Sees JP. PMID: 26358299.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
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