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Personalized hip joint replacements using a large diameter head

Published in N°013 - September / October 2021
Article viewed 106 times

Personalized hip joint replacements using a large diameter head

By Pascal-André Vendittoli 1,2,3, Sagi Martinov 1, Mina Wahba Morcos 1 in category UPDATE
1. Hôpital Maisonneuve-Rosemont, Université de Montréal, département de chirurgie, 5415, boulevard de l’Assomption, Montréal, Québec, Canada H1T 2M4 2. Clinique Orthopédique Duval, Laval, Québec, Canada. 3. Société d’arthroplastie personnalisée, Géorgie, USA email : [email protected]

Hip arthroplasty is one of the most common and successful orthopaedic procedures in recent years. The aim of hip replacement is to create a ‘forgotten’ joint, with the same functionality as a native structure.

Abstract

Hip arthroplasty is one of the most common and successful orthopaedic procedures in recent years. The aim of hip replacement is to create a ‘forgotten’ joint, with the same functionality as a native structure. To achieve such goal, the hip arthroplasty should be personalized by restoring the native hip’s centre of rotation, leg length equality, femoral offset, femoral orientation, soft tissue tension, stress transfers, range of motion, and stability. In addition, it should provide an uneventful and fast postoperative recovery, and lifetime implant survivorship with unrestricted activities.

Our preference is for a personalized total hip arthroplasty (THA) with a large diameter head (LDH) and either a monobloc or dual-mobility configuration. LDH THA offers an impingement-free range of motion and a reduced risk of dislocation. The supraphysiological range of motion (ROM) offered by a large head–neck offset can compensate for any abnormal spinopelvic mobility and surgical imprecision. Moreover, an LDH bearing with low clearance exerts a high suction force, providing hip micro-stability. With appropriate biomechanical reconstruction, LDH THA can restore normal gait parameters, allowing unrestricted activities and resulting in high patient satisfaction.

We use LDH...

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