

Orthopaedics
Jess Lonner, M.D.
Bryn Mawr, PA
Dr. Lonner is a board certified orthopaedic surgeon who specializes in the treatment of arthritis of the knee, as well as arthroscopic treatments for meniscus tears. He is an internationally recognized leader in minimally invasive partial and total knee replacement surgery, with a unique focus in robotic-assisted techniques. Patients from around the world have sought his care and countless surgeons have learned from him.
35+
Years in Practice
Peer Recognition
- Castle Connolly — Top Doctor
2017-2026 (10 years)
- Healthgrades — Healthgrades Honor Roll
Clinical Focus
Subspecialties
Joint Replacement
Conditions & Treatments
Joint ReplacementMinimally Invasive SurgeryHip ReplacementKnee ReplacementCartilage Restoration
Practice Details
Hospital Affiliations
- Bryn Mawr Hospital
- St Lukes Hospital Bethlehem
- Main Line Health
Experience
35+ years in practice