Bengaluru: KIMS Hospitals, Mahadevapura, has performed Karnataka’s first NitrX medial pivot total knee replacement surgery using a kinematic alignment instrument set, the hospital said on Monday.
The procedure was carried out by a team led by Dr Kumardev Arvind Rajamaniya as part of the hospital’s orthopaedic services.
The surgery was performed on a 65-year-old woman suffering from Grade 4 osteoarthritis, the most advanced stage of the condition, marked by severe pain, deformity and instability in walking. Despite her condition, the patient remained active and sought a solution that would allow her to maintain mobility, including climbing stairs.
The hospital said the procedure marks a milestone in knee arthroplasty in the state, introducing a technique aimed at closely replicating the natural movement of the knee. The patient was discharged within three days of the surgery.
According to the doctors, the medial pivot design differs from conventional knee implants by mimicking natural knee biomechanics. It provides greater stability on the inner (medial) side while allowing more natural front-to-back movement on the outer (lateral) side.
The NitrX implant features a titanium niobium nitride coating, which offers low metal reactivity and may benefit patients with metal sensitivities. It is also bone-conserving and uses a single-radius design to maintain consistent ligament tension across the range of motion.
“This patient had severe Grade 4 osteoarthritis with deformity and instability but was keen to remain active. We opted for a procedure designed to restore knee function in a way that closely replicates natural anatomy. With kinematic alignment, we are recreating the patient’s pre-arthritic knee rather than applying a standard alignment,” Dr Rajamaniya said.
Dr Nitish Shetty, Managing Director, KIMS Hospitals, Bengaluru, said the initiative reflects the hospital’s focus on adopting evidence-based and patient-centric surgical practices.
The development highlights the growing adoption of advanced, bone-conserving and anatomically aligned knee replacement procedures in India, with an increasing focus on precision-driven orthopaedic care.
