Associate Professor, Orthopedics, Case Western Reserve University School of Medicine

Orthopaedic Surgery

Nicholas practices Orthopaedic Surgery. He went to medical school at Harvard Medical School. Harvard Medical School is a one of the best medicals schools. Harvard Medical School has a rank of 1 in research and a 12 in primary care Nicholas U. Ahn is also published. He has 58 publications published. The lastest publication: "The Influence of Diabetes on Surgical Outcomes in Cervical Myelopathy.' Dr. Nicholas U. Ahn is registered with Medicare and accepts Medicare payments.

Publications

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• Bilateral Pars Defects at the L4 Vertebra Result in Increased Degeneration When Compared With Those at L5: An Anatomic Study.
• Chronic Opioid Therapy after Lumbar Fusion Surgery for Degenerative Disc Disease in a Workers' Compensation Setting.
• Lower thoracic pedicle morphometry: male, taller, and heavier specimens have bigger pedicles.
• Single level Lumbar Fusion for Degenerative Disc Disease is Associated with Worse outcomes compared to Fusion for Spondylolisthesis in a Workers' Compensation Setting.
• Analysis of Internet information on the controversial X-Stop device.
• Pedicle Morphometry of Upper Thoracic Vertebrae: An Anatomic Study of 503 Cadaveric Specimens.
• Can Internet Information on Vertebroplasty be a Reliable Means of Patient Self-education?
• Risk factors for nonorganic low Back pain in patients with worker's compensation.
• Disk degeneration in lumbar Spine precedes osteoarthritic changes in hip.
• Does Chronic warfarin cause increased blood loss and transfusion during lumbar spinal surgery?
• Are the left and right proximal Femurs symmetric?
• Application of a correlation between the Lumbar Torg ratio and the area of the spinal canal to predict Lumbar stenosis: a study of 420 postmortem subjects.
• Is congenital bony stenosis of the Cervical spine associated with congenital bony stenosis of the thoracic spine? An anatomic study of 1072 human cadaveric specimens.
• Ten-year clinical and imaging follow-up of dural ectasia in adults with Marfan Syndrome.
• Establishment of parameters for congenital stenosis of the Cervical spine: an anatomic descriptive analysis of 1,066 cadaveric specimens.
• Is Lumbar stenosis associated with thoracic stenosis? A study of 1,072 human cadaveric specimens.
• Establishment of parameters for congenital thoracic stenosis: a study of 700 postmortem specimens.
• Is congenital bony stenosis of the Cervical spine associated with lumbar spine stenosis? An anatomical study of 1072 human cadaveric specimens.
• Cervical Endplate and Facet Arthrosis: An Anatomic Study of Cadaveric Specimens.
• Correlation of SacroPelvic Geometry with Disc Degeneration in Spondylolytic Cadaver Specimens.
• Cement Augmentation Of Refractory Osteoporotic Vertebral Compression Fractures: Survivorship Analysis.
• Anatomic variance of interfacet distance and its relationship to facet arthrosis and disk degeneration in the lumbar Spine.
• Prevalence of concurrent lumbar and Cervical arthrosis: an anatomic study of cadaveric specimens.
• An evaluation of information on the Internet of a new device: the lumbar artificial Disc replacement.
• Reherniation and failure after lumbar Discectomy: a comparison of fragment excision alone versus subtotal Discectomy.
• Does lumbar facet arthrosis precede Disc degeneration? A postmortem study.
• Prevalence of Lumbar facet arthrosis and its relationship to age, sex, and race: an anatomic study of cadaveric specimens.
• Mechanical neck Pain and cervicogenic headache.
• Anatomic considerations for the placement of C2 laminar screws.
• Cauda equina Syndrome resulting from treatment of dural ectasia with fibrin glue injection.
• Protrusio acetabuli in Marfan Syndrome: age-related prevalence and associated hip function.
• Odontoid Fracture in a 50-year-old patient presenting 40 years after cervical spine trauma.
• Operative treatment of the patient with neck Pain.
• Septic arthritis of the hip following cortisone injection: case report and review of the literature.
• Lumbar herniated nucleus pulposus.
• Evaluation of registration methods used in frameless stereotactic surgery for the lumbar and Cervical regions of the spine.
• Posterior decompressive procedures for the Cervical spine.
• Microsurgery for degenerative conditions of the Cervical spine.
• Plain radiography of the lumbosacral spine in Marfan Syndrome.
• Dural ectasia and Back pain: review of the literature and case report.
• The etiology of adolescent idiopathic scoliosis.
• Functional outcome and radiographic correction after spinal osteotomy.
• The hip in Stickler Syndrome.
• A comparison of the Berlin and Ghent nosologies and the influence of dural ectasia in the diagnosis of Marfan Syndrome.
• Early failure associated with the use of Hylamer-M spacers in three primary AMK total Knee arthroplasties.
• Trabecular microFracture precedes cortical shell failure in the rat caudal vertebra under cyclic overloading.
• Orthopedic problems in Lesch-Nyhan Syndrome.
• Disproportionately severe calcinosis cutis in an 88-year-old patient with CREST Syndrome.
• Dural ectasia and conventional radiography in the Marfan lumbosacral Spine.
• The lumbar interpediculate distance is widened in adults with the Marfan Syndrome: data from 32 cases.
• Dural ectasia in the Marfan Syndrome: MR and CT findings and criteria.
• Thoracolumbar spinal abnormalities in Stickler Syndrome.
• Cauda equina Syndrome in ankylosing spondylitis (the CES-AS Syndrome): meta-analysis of outcomes after medical and surgical treatments.
• Osseous anatomy of the lumbosacral spine in Marfan Syndrome.
• Dural ectasia is associated with Back pain in Marfan syndrome.
• Cauda equina Syndrome secondary to lumbar disc herniation: a meta-analysis of surgical outcomes.
• The Influence of Diabetes on Surgical Outcomes in Cervical Myelopathy.

Schools

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• Harvard Medical School

• John Hopkins Hospital

• Johns Hopkins University School Of Nursing

• Rush Presbyterian St Lukes Medical Center

Procedures Preformed

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• Carpal Tunnel Release
• Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
• Dural Repair or Other Spinal Spinal Cord Repair
• Herniated Background: yellow;'>Background: yellow;'>Background: yellow;'>Background: yellow;'>Background: yellow;'>Background: yellow;'>Disc Surgery
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Conditions Treated

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• Adhesive Capsulitis
• Arm Background: yellow;'>Background: yellow;'>Background: yellow;'>Background: yellow;'>Background: yellow;'>Fracture (incl. Elbow and Shoulder)
• Ataxia
• Background: yellow;'>Background: yellow;'>Background: yellow;'>Back Background: yellow;'>Background: yellow;'>Background: yellow;'>Background: yellow;'>Pain
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Doctors Specialties

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• Orthopedic Surgery
• Orthopaedic Surgery

Accepted Insurances

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Education

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• Rush University Medical Center
• Johns Hopkins University
• Harvard Medical School

Hospital

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• University Hospitals Case Medical Center

Drug Facts

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NPI NUMBER		1356369482
NPPES Provider LastName		AHN
NPPES Provider FirstName		NICHOLAS
NPPES Provider ZIPCode		441061716
NPPES Provider State		OH
Specialty Description		Orthopedic Surgery
Total Claim Count		255.0
Distinct Opioid Count		4.0
Opioid Claim Count		131.0
Percent Opioid Claims		51.37

Helpful Reviews

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Medicare Facts

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National Provider Identifier [NPI]	1356369482
Last Name Of The Provider	AHN
First Name Of The Provider	NICHOLAS
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