Knee replacement surgery, sports medicine, and arthroscopy are few of the areas of expertise of Dr. Rakesh Mahajan. Sports medicine, arthroscopy, and primary arthroplasty procedures of the knee, hip, and shoulder are among his specialties. He is also renowned for treating complicated fractures in adults.

He has been awarded with the Amar Jyoti Award and the Bharat Gaurav Award. Indian Orthopedic Association and Indian Society of Hip and Knee Surgeries are among the notable organizations in which he is a member.