ACMH offers comprehensive services for the full spectrum of musculoskeletal conditions

The ACMH | Armstrong Orthopedic Associates practice specializes in the treatment of arthritis, musculoskeletal conditions and sports medicine. Patients are cared for using the most current operative and non-operative techniques.

Orthopedic Experts

The Armstrong Orthopedic Associates' philosophy on treating patients with arthritis is that before considering surgery, all patients should try a comprehensive approach to non-surgical treatment. Those who fail to find success with conservative treatment and elect to have surgery are thoroughly evaluated with respect to general health, lifestyle, living situation and occupation before the doctor and patient choose the appropriate surgery.

Dr. Hepner and Dr. Formaini have trained at some of the best orthopedic hospitals in the country. In addition, their treatment techniques are on the leading edge, utilizing progressive programs designed to achieve optimal results with physician and patient working as a team toward the goal of full recovery.

Surgical Solutions

When surgery is necessary to correct an orthopedic disorder or injury, ACMH Hospital has state-of the-art operating rooms. Equipped with the most advanced instrumentation and equipment, these operating rooms are staffed by highly-trained professionals who assist Dr. Hepner and Dr. Formaini during surgery, and monitor patients in the recovery room. If surgery is recommended, the operative plan and the recovery process are thoroughly explained to the patient by the physician.

Physical rehabilitation is an integral part of successful recovery, whether it is used as the primary treatment for a disorder or follows a surgical procedure to enhance the healing process. With this in mind, physical therapists (along with the doctors) design individual exercise programs for each patient so that optimum recovery is achieved as soon as possible.


Available services include:
  • Total shoulder replacement
  • Reverse total shoulder replacement
  • Total knee replacement
  • Total hip replacement
  • Arthroscopic rotator cuff repair
  • Total elbow replacement
  • Arthroscopic shoulder, knee & elbow surgery
  • ACL reconstruction
  • Minimally invasive hand surgery
  • Minimally invasive elbow & tendonitis surgery
  • Fracture surgery
  • Carpal tunnel surgery
  • Cubital tunnel surgery

A New Approach - The Rotation Medical Rotator Cuff System

Until now, surgeons have had limited ability to address rotator cuff injury at earlier stages of degeneration. In addition, traditional rotator cuff repair procedures that involve suturing tendon to bone are associated with long rehabilitation, significant lifestyle interruption and variable outcomes. As a result, many people choose to forego surgery until pain is severe and range of motion is significantly impaired.

However, as rotator cuff disease progresses, it can become increasingly difficult for your surgeon to repair. The Rotation Medical Rotator Cuff System is a new technology designed to improve the treatment of rotator cuff disease:

  • The technology can be used in earlier stages of rotator cuff disease to slow progression of your rotator cuff disease. Addressing the injury earlier can shorten recovery time, reduce pain and improve quality of life. Intervening before a full tear has occurred may also decrease your chances of requiring traditional rotator cuff surgery.
  • The technology can also be used in conjunction with traditional repair procedures to improve the tendon biology and decrease the chance of your rotator cuff tendon re-tearing.

What Is It?
The technology includes a collagen based bioinductive implant about the size of a postage stamp. This implant is delivered arthroscopically through a small incision over the location of your rotator cuff tendon injury. Your physician will secure it in place with small staples.

Bert Hepner, DO is the founding member of Armstrong Orthopedic Associates. He formed the practice in August of 2002 after completion of his residency. Dr. Hepner was born and raised in the Kittanning area. He graduated from Kittanning Senior High School and attended Indiana University of Pennsylvania where he graduated with honors. Dr. Hepner then attended Philadelphia College of Osteopathic Medicine, graduating near the top of his class. Following graduation of medical school, Dr. Hepner did a traditional rotating internship at the University of Pittsburgh Medical Center-Shenango Valley. Following this, he then attended Ohio University St. Joseph's Health Center, Warren, Ohio, for his orthopedic surgical residency.

Over the past 15 years, Dr. Hepner has been in practice providing general orthopedic care to the Armstrong County community with an emphasis on hip and knee reconstruction. During this period of time, he has also been involved with local athletic programs, providing support to the teams over the past 15 years.

Dr. Hepner received board certification on March 3, 2007, and was recertified in 2017. He practices general orthopedics, sports medicine, performs arthroscopic procedures to the shoulder and knee, does hip and knee reconstruction, and hand surgery. Patients are cared for using the most current operative and nonoperative treatment. Only after exhaustion of nonoperative treatment does he consider operative intervention.

Nathan Formaini, DO joined Armstrong Orthopedic Associates in August of 2015. Born and raised in the Kittanning area, he graduated from Ford City High School and received his undergraduate degree from the University of Pittsburgh, graduating with honors. Dr. Formaini attended the Lake Erie College of Osteopathic Medicine graduating at the top of his medical school class before completing a five-year orthopedic residency through Ohio University at Doctors Hospital and Grant Medical Center in Columbus, Ohio.

He concluded his surgical training with a one-year shoulder and elbow fellowship under the direction of Dr. Jonathan Levy at Holy Cross Hospital in Fort Lauderdale, Florida. Returning to the area with his wife, Kristen, and son, Leonardo, Dr. Formaini is excited and grateful to be serving the same communities in which he grew up.

Dr. Formaini brings a superior level of care in the fields of general orthopedics, sports medicine, arthroscopic procedures, as well as hip replacement and knee replacement surgery to Armstrong County and the surrounding region. In addition, Dr. Formaini has a special interest in shoulder and elbow surgery, having completed a surgical fellowship focusing on complex shoulder and elbow problems. His diagnostic skills and surgical expertise in this particular area include reverse shoulder replacement, total shoulder replacement, total elbow replacement, arthroscopic shoulder and elbow procedures, and upper extremity fracture management. Dr. Formaini has authored journal and textbook publications on various topics in orthopedic surgery and serves as a reviewer for peer reviewed orthopedic journals.

For more information, visit DoctorNate.com.

Frequently Asked Questions

How do I make an appointment?
Please call 724-545-2205 to make an appointment. Except in the case of an emergency, it is not our policy to see patients without an appointment. We understand that it is tempting to bring someone with you in hopes that they can be seen as well during your appointment time, but in fairness to those who have waited, we are not able to see anyone without a scheduled appointment. We appreciate your cooperation in this matter.

What do I need to bring with me?
Please bring the following items with you to appointments:

  • Your insurance card or other health coverage information. Some insurance carriers require you to have a referral or primary care physician authorization before treatment is given. Please check with your carrier if you are in doubt.
  • X-Rays or MRI’s not older than twelve or eighteen months (if available).
  • Clinic notes or operative reports from your referring physician that relate to your condition.

Can I obtain my medical records from Armstrong Orthopedic Associates?
If you need to request certain medical records from our office, please be aware that the request could take ten days to two weeks before you receive the information. We will make every effort to fulfill all medical records requests as quickly as possible.

How can I pay?
Cash and check are accepted. Co-pays are due upon arrival.

What if I need surgery?
If you require surgery to correct an orthopedic disorder, Dr. Hepner will thoroughly explain the operative procedure, the recovery process and the type of rehabilitation program you will need. Our staff will pre-certify your procedure and discuss any financial implications with you.

What can I do if the office is closed?
We always have a physician on call in case of after hour emergencies. If you need to contact a physician after hours, call the ACMH Hospital switchboard at 724-543-8500. Routine prescription refills will be filled between the hours of 9:00AM and 5:00PM Monday through Wednesday, 9:00AM and 1:00PM Thursdays and between 9:00AM and 3:00PM Fridays.

Tenex Minimally Invasive Procedures
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Orthopedic Surgeons

Nathan Formaini, DO
Nathan Formaini, DO
Shoulder Replacement
View Bio
Bert Hepner, DO
Bert Hepner, DO
View Bio

Armstrong Orthopedic Associates

77 Glade Drive
Kittanning, PA 
Phone: 724-545-2205
Fax: 724-545-2600
Monday - Thursday: 8:00AM - 5:00PM
Friday: 8:00AM - 12:00PM