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'; endif; wp_reset_postdata(); ?> Dr. Nathan Angerett is a fellowship-trained orthopedic surgeon specializing in adult hip and knee reconstruction and total joint replacement, including robotic joint replacement surgery and the direct anterior total hip replacement procedure. Dedicated to helping patients regain mobility and improve their quality of life, he focuses on advanced surgical techniques and personalized patient care.
Dr. Angerett completed his specialty training in Hip and Knee Replacement Surgery through The Baltimore Adult Hip and Knee Reconstruction Fellowship. This esteemed program—a collaboration between LifeBridge Health and The University of Maryland—provided the opportunity to master complex hip revision and knee replacement techniques under the mentorship of some of the nation’s leading joint replacement surgeons.
Before his fellowship, Dr. Angerett completed his Orthopedic Surgery residency at UPMC Harrisburg, where his peers elected him to serve as the Executive Chief Resident. During this time, he spearheaded numerous patient care and quality improvement initiatives. His leadership and dedication earned him the C. McCollister Evarts Resident Leadership Award and induction into the prestigious American Orthopaedic Association’s Emerging Leaders Program.
Dr. Angerett’s academic journey began with pre-medical coursework at the University of Pittsburgh and the University of Pennsylvania. He earned his Doctorate from the Lake Erie College of Osteopathic Medicine, where he was inducted into the National Osteopathic Medicine Honors Society and awarded the Pennsylvania Outstanding Osteopathic Medical Student Award for his exceptional achievements.
A respected researcher, Dr. Angerett has published numerous peer-reviewed articles on a wide range of orthopedic topics. Click here to explore his research publications. His work has been nationally recognized by the American Association of Hip and Knee Surgeons and the American Osteopathic Academy of Orthopedics. Locally, his research has received the Outstanding Research Award multiple times at the UPMC Central PA Annual Medical Education Day. Dr. Angerett serves as a reviewer for the Journal of Arthroplasty and the Journal of Bone and Joint Surgery (JBJS), two of the leading journals in orthopedic surgery.
Dr. Angerett is passionate about providing care tailored to each patient’s needs. He prioritizes non-operative measures whenever possible, offering compassionate and evidence-based treatments designed to restore independence and improve quality of life. For patients requiring surgery, he employs state-of-the-art techniques to achieve the best possible outcomes.
When he’s not caring for patients, Dr. Angerett enjoys spending time with his wife and their three children—two daughters and a son. The family loves cheering on their kids during sports events and relaxing with movie nights. Dr. Angerett’s commitment to family life reflects his understanding of the importance of helping his patients return to what matters most: spending time with the people they love.
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1. Suspicious mass or tumor
a. On initial evaluation or follow up
2. Staging of known cancer
3. Suspected or known infection (septic arthritis or osteomyelitis)
4. Suspected Osteonecrosis
5. Evaluation of Rheumatoid Arthritis or other autoimmune diseases
6. Evaluation of Post-op Complications
a. Infection, delayed union, other
7. Suspected fracture with prior imaging non-diagnostic
8. Abnormal bones scan with non-diagnostic Xray
9. Significant injury with suspected ligament, cartilage, tendon, nerve or bone injury with non-diagnostic prior imaging
a. Suspected massive rotator cuff tear
10. Evaluation of pain or more minor injury with initial imaging non-diagnostic:
a. Pain lasting 3 months or greater
b. Failed conservative therapy: Must include each one:
i. Rest: modified activities or assistive devices/rigid splints or braces
ii. Ice or heat
iii. Medications and/or injections
iv. Physical therapy or a physician directed home exercise program
or chiropractic care
1. Document instructions given
2. Document compliance and results
3. Document duration and dates
1. Tumor, masses, or cancer: suspected or known
2. Neurological Deficits
3. Trauma or acute injury
a. With neurological deficits
b. With progressive symptoms during conservative treatment
4. Infection: known or suspected
5. Inflammation: Ankylosing Spondylitis
6. Pre-op Evaluation
7. Post-op Complications
8. Acute or Chronic Axial or radicular pain
a. Pain lasting 6 weeks or greater
b. ADLs must be affected
c. Progressive neurological deficit or an abnormal EMG
i. Must document specific dermatome, muscle weakness, reflex
abnormalities
d. Failed conservative therapy: Must include each one:
i. Rest: modified activities or bracing
ii. Ice or heat
iii. Medications, acupuncture or stimulators
1. Specific name of medication start date and duration and
results
iv. Epidurals or other injections (not trigger point injections)
v. Physical therapy or a physician directed home exercise program
or chiropractic care
1. Document instructions given
2. Document compliance and results
3. Document duration and dates
1. Musculoskeletal Pelvic MRI:
a. Mass or tumor
b. Significant injury to rule out fracture or other injury
c. Osteonecrosis of hips
d. Sacroiliitis
e. Sacroiliac joint dysfunction
f. Pain lasting 3 months or greater
g. Failed conservative therapy: Must include each one:
i. Rest: modified activities or assistive devices/rigid
splints or braces
ii. Ice or heat
iii. Medications and/or injections
iv. Physical therapy or a physician directed home
exercise program or chiropractic care
1. Document instructions given
2. Document compliance and results
3. Document duration
h. Persistent Pain not responsive to 4 weeks of conservative treatment
2. Prostate Cancer Evaluation, follow up, and surveillance
3. Mass or Tumors
4. Cancer detection, staging, or surveillance
a. 3, 6, or 12 month follow up
5. Infection:
a. Appendicitis
b. Diverticulitis not responding to conservative care
c. Inflammatory bowel disease
d. Abscess suspected
e. Fistula
f. Abnormal fluid collection
6. Pelvic Floor failure
7. Uterine abnormalities
8. Undescended Testes
9. Pre-op Evaluation
10. Post-op Complication
1. Suspicious Mass or Tumor
a. On initial evaluation or follow up
2. Staging of known Cancer
3. Known or suspected infection
4. Suspected Osteonecrosis or Legg-Calve-Perthes Disease
5. Suspected SCFE, tarsal coaltion
6. Evaluation of Post-op complication:
a. Infection, delayed union, other
7. Suspected fracture with prior imaging non-diagnostic
8. Abnormal bone scan with non-diagnostic xray
9. Significant injury with suspected ligament, cartilage, or bone injury
10. Evaluation of pain or more minor injury with initial imaging negative:
a. Pain lasting 3 months or greater
b. Failed conservative therapy: Must include each one:
i. Rest: modified activities or assistive devices/rigid splints or braces
ii. Ice or heat
iii. Medications and/or injections
iv. Physical therapy or a physician directed home exercise program orchiropractic care
1. Document instructions given
2. Document compliance and results
3. Document duration
1. Mediastinal or hilar mass
2. Myasthenia gravis with suspected thymoma
3. Brachial Plexus Dysfunction
4. Thoracic/Thoracoabdominal aneurysm
5. Suspected or confirmed Congenital Heart Disease
6. Thoracic Outlet Syndrome
1. Suspected or known MS
2. Seizure disorder, known or suspected new or refractory
3. Suspected Parkinson’s disorder
4. Neurological symptoms or deficits
a. Acute, new or fluctuating deficits
5. Mental status changes
6. Trauma to the head with neurological changes, vomiting, headache
7. Evaluation of headaches
a. Chronic with change in pattern/character
b. Sudden onset severe headache
c. New onset headache in pregnancy
8. Suspected brain tumor or cancer
9. Known or suspected stroke
10. Suspected Infection
11. Suspected Congenital abnormality
12. New onset tinnitus or vertigo associated with visual changes
MRI
1. Suspicious Mass or Tumor
2. Surveillance of Mass, Tumor, or Cancer
a. 3, 6, 12 month follow up
3. Suspected infection:
a. Appendicitis
b. Peritonitis
c. Pancreatitis
d. Inflammatory bowel disease
e. Cholecystitis
f. Abscess
g. Fistula
h. Hepatitis C
4. Preoperative Evaluation
5. Post-op complication
MRCP
1. Suspected Congenital Abnormality
2. Chronic pancreatitis or related complications
3. Biliary tree symptoms
4. Pre-op Evaluation
5. Post-op complication or surveillance
6. Inconclusive abnormalities identified on other imaging