Orthopaedic Surgical Associates

01/23/2026

Due to inclement weather, all offices will open at 1:00 pm on Monday, January 26, except Chelmsford Imaging, which will open at 10:00 am.

01/21/2026

Orthopaedic Surgical Associates is proud to announce that 10 of our physicians have been named Castle Connolly Top Doctors, placing them among the top 7% of practicing physicians in the country.

Please join us in congratulating our exceptional team of doctors. Learn more and see the full list of doctors recognized: https://ow.ly/KwrS50Y0QeQ

Orthopaedic Surgical Associates (OSA) is proud to announce that 10 of our physicians have been recognized on this year’s Castle Connolly 2026 Top Doctors and Rising Stars list.

01/19/2026

Today, we honor and reflect on Dr. Martin Luther King Jr.’s vision of freedom and equality for all.

Please note that OSA physician offices will be closed today in observance of the holiday. Imaging services at our North Chelmsford location are open as usual.

12/30/2025

Wishing you a happy and healthy New Year! We look forward to seeing you in 2026. Please see our holiday hours:

1/1/26:
- All locations closed

12/29/2025

With recent headlines in professional football bringing renewed attention to ACL injuries, conversations around treatment, recovery, and return-to-sport are more prevalent than ever.

Dr. Scott Sigman, sports medicine surgeon at OSA emphasizes how ACL care has evolved into a highly personalized process, where individualized rehab and functional benchmarks now play a key role in preparing athletes to return to sport.

Learn more about Dr. Sigman: https://ow.ly/VZS750XNPYr

12/22/2025

Wishing you and your loved ones a joyful holiday. Please see our holiday hours below.

Thursday, 12/25/25:
- All locations closed

Friday, 12/26/25 & Saturday, 12/27/25:
- All locations closed except Chelmsford Imaging

12/12/2025

As we enter this season of celebration, we extend our warmest wishes to all our patients, team members, and their families. Here's to a month of joy and good health!

11/26/2025

All of us at OSA wish you and your loved ones a Happy Thanksgiving filled with gratitude and good health.

In observance of the holiday, all OSA locations will be closed on Thursday, 11/27. On Friday, 11/28, all locations will be closed except for Chelmsford Imaging, which will be open with regular business hours on Friday, 11/28 and Saturday, 11/29.

11/14/2025

This Nurse Practitioner Week, we celebrate the dedication and expertise of our nurse practitioners who provide exceptional care to patients at OSA every day. Thank you for all that you do!

11/11/2025

On Veterans Day, we honor and thank all who have served our country. We are also proud to recognize the veterans and military family members within our own teams who have served or supported loved ones in service.

11/03/2025

This National Radiologic Technology Week, we celebrate the skilled professionals who perform safe, accurate and comfortable imaging for our patients. Join us in thanking our fantastic imaging team at Orthopaedic Surgical Associates.

Pictured: Marie, Renee, Kim, Linda, Kayla, Nicole, Jackie, Paula, Katie

10/30/2025

This Orthopaedic Nurses Day, we are proud to honor the orthopedic nurses whose dedication and expertise are integral to the quality of our care.

Thank you for all that you do.