The Libra® range of implant is composed by self locking stems dedicated to primary total hip arthroplasty. The stems have a 11/13 (4°) taper.
Characteristics and materials
- Standard or lateralised, collared or collarless version.
- Cemented or cementless versions, with or without support.
- CCD angle of 130°.
- A 11/13 (4°) taper which needs to be combined with SERF “SI” or “SD” heads with the same 11/13 taper.
- Cementless stems: titanium alloy and HAP
- Cemented stems: fully polished high-nitrogen stainless steel.
- Femoral heads: “SI” made from stainless steel or “SD” made from Biolox® delta ceramic.
- An unique instrumentation
- A wide choice of broach handles for the different approaches : posterior, posterolateral, anterior and anterolateral.
The Libra® stem range is indicated in the following cases:
- Primary or secondary osteoarthritis.
- Advanced joint destruction resulting from rheumatoid or post-traumatic arthritis.
- Fracture or avascular necrosis.
- Following previous surgery, including hip arthroplasty.
- Libra® implants are mainly indicated in the case of primary or secondary osteoarthritis, displaced subcapital and transcervical fracture and Paprosky type I to IIB bone defects.
Contraindications of the Libra® stem range are as follows:
- Acute or chronic local or systemic infection (cardiopathy, decompensated diabetes, continuous haemodialysis, reduced immune response, etc.).
- Severe muscular, neurological or vascular deficiencies affecting the extremity concerned.
- Bone destruction or loss, or poor bone quality likely to affect implant stability, severe osteoporosis, major deformity of the joint to be replaced, local bone tumours.
- All related conditions which could compromise the function or implanting of the prosthesis.
- Systemic or metabolic disorders,
- Mental incapacity of patients to understand the surgeon’s instructions,
- Drug addiction, alcohol, tobacco or medicine abuse,
- Local bone tumours,
- Obesity, excess weight, high level of physical activity, intense exercise, after a fall.