proxima hip replacement
DESCRIPTION
The Proxima hip replacement is one of the few short stem hip prosthesis that eliminate undesirable side effects of a total hip replacement. With the proxima hip, there is less bone loss, less risk of dislocation and no thigh pain. A variety of bearing options are also possible like ceramic, metal, polyetheylene. Dr. Venkatachalam offers this procedure at affordable costs at the Madras Joint Replacement Center ( MJRC)TRANSCRIPT
Proxima Hip replacement – Less is Proxima Hip replacement – Less is MoreMore
Dr.A.K.Venkatachalam
MS, DNB, FRCS, MCh Orth
Consultant Orthopaedic surgeon
www.hipsurgery.in, www.kneeindia.com
Proxima- What does it meanProxima- What does it mean
Proxima - refers to the anatomy in the proximal portion of the “Femur’ or thigh bone. It is shaped by the inner contours of the proximal femur
Conventional Total Hip Conventional Total Hip replacements replacements Introduced in 1960’s by Dr.John Charnley,
an English Orthopedic surgeon. Upper end of the femur is resected
consisting of the head and neck portion . Socket of the pelvic bone is deepened Prosthesis is implanted with bone cement. Metal articulates with High density
polyetheylene. Risk of dislocation results in poor function Recovery takes upto three months
Surface hip replacementsSurface hip replacements
Developed in late nineties in UK by Dr.Derek Mcminn
Head of femur is sculpted and not chopped off to receive a cap or resurfaced.
Socket is deepened and a new socket banged in
Could survive for long term as bearings are made of metal on metal – Unknown at present
Recovery is faster. Function is better.
Proxima is a bone preserving hip Proxima is a bone preserving hip replacementreplacement
Neck portion of femur is preserved
Only head is removed.
The shaft of the femur is not entered or reamed, once again preserving bone.
Design features of Proxima hip.Design features of Proxima hip.
Designer- Italian surgeon Dr. F.Santori Ten year follow up of a similar implant. Implant is fixed in the spongy upper part of
the thigh bone. Large diameter head – less chance of
dislocation Metal on metal possible longer survivor ship Can be implanted by a small incision as less
bone is resected ( Minimally invasive surgery)
Advantages of ProximaAdvantages of Proxima
Less soft tissue dissectionLess bony resectionLarge diameter Head- less chance of
dislocationFluid film lubrication – leads to less
wear of the implantMetal on metal bearings- less wearHence less is More
Intelligent Hip surgeryIntelligent Hip surgery
Maximising survivorship Optimising function
Accelerating recovery
Indications for Proxima HipIndications for Proxima Hip
Any patient with Hip arthritis for whom a total hip replacement is the permanent solution but Proxima will preserve more bone than a total hip replacement. Bone stock should be intact.
Those patients with disease in the head which is more extensive making “ Resurfacing” unsuitable. For eg- Avascular necrosis
Minimally invasive Hip & Knee Minimally invasive Hip & Knee surgery - What is it?surgery - What is it?
Skin incisions are smaller than conventional surgery
It is not Key hole or arthroscopic surgery
Inside soft tissue dissection is less.More Bone, tendons, soft tissues are
preserved
Benefits of Minimally invasive Benefits of Minimally invasive surgerysurgery
Less Blood lossLess Post op painLess requirement for narcotic analgesiaShorter hospitalizationEarly functional recoveryCosmesis
Thank youThank you