BIOMET SIDE ACCESS DISTAL FEMORAL EXPANDABLE
Device Facts
| Record ID | K140509 |
|---|---|
| Device Name | BIOMET SIDE ACCESS DISTAL FEMORAL EXPANDABLE |
| Applicant | Biomet Manufacturing, LLC |
| Product Code | KRO · Orthopedic |
| Decision Date | May 28, 2014 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 888.3510 |
| Device Class | Class 2 |
| Attributes | Therapeutic, Pediatric |
Indications for Use
The Biomet Side Access Distal Femoral Expandable offers a treatment option for patients requiring distal femoral replacement who have not yet achieved full skeletal maturity (open epiphysis) or patients who require surgery who have significant residual leg length discrepancy. Indication for use of this device is most commonly tumor resection but could also involve osteoarthritis; rheumatoid arthritis; correction of deformity; and correction or revision of unsuccessful osteotomy, arthrodesis or previous joint replacement. The devices are single use implants intended for implantation with bone cement or with Biomet Compress®.
Device Story
Biomet Side Access Distal Femoral Expandable is an orthopedic implant component for the Orthopedic Salvage System (OSS); designed for distal femoral replacement in patients with open epiphyses or leg length discrepancies. Device features an inner telescoping tube (intercalary segment) adjusted via a coaxial screw; allows for post-operative prosthesis expansion as patient grows. Implanted by surgeons in clinical settings; used with bone cement or Biomet Compress® system. Provides a mechanism to manage limb length without lengthening existing bone. Benefits include simplified expansion process for both surgeon and patient compared to previous iterations.
Clinical Evidence
No clinical data provided. Substantial equivalence determined via bench testing, specifically cyclic fatigue testing.
Technological Characteristics
Constrained knee implant (femorotibial, metal/polymer). Features inner telescoping tube (intercalary segment) with coaxial adjusting screw. Compatible with Biomet OSS and Compress (CPS) systems. Single-use. Mechanical expansion mechanism.
Indications for Use
Indicated for patients requiring distal femoral replacement, including those with open epiphysis (skeletal immaturity) or significant residual leg length discrepancy. Conditions include tumor resection, osteoarthritis, rheumatoid arthritis, deformity correction, or revision of failed osteotomy, arthrodesis, or previous joint replacement.
Regulatory Classification
Identification
A knee joint femorotibial metal/polymer constrained cemented prosthesis is a device intended to be implanted to replace part of a knee joint. The device limits translation or rotation in one or more planes and has components that are linked together or affined. This generic type of device includes prostheses composed of a ball-and-socket joint located between a stemmed femoral and a stemmed tibial component and a runner and track joint between each pair of femoral and tibial condyles. The ball-and-socket joint is composed of a ball at the head of a column rising from the stemmed tibial component. The ball, the column, the tibial plateau, and the stem for fixation of the tibial component are made of an alloy, such as cobalt-chromium-molybdenum. The ball of the tibial component is held within the socket of the femoral component by the femoral component's flat outer surface. The flat outer surface of the tibial component abuts both a reciprocal flat surface within the cavity of the femoral component and flanges on the femoral component designed to prevent distal displacement. The stem of the femoral component is made of an alloy, such as cobalt-chromium-molybdenum, but the socket of the component is made of ultra-high molecular weight polyethylene. The femoral component has metallic runners which align with the ultra-high molecular weight polyethylene tracks that press-fit into the metallic tibial component. The generic class also includes devices whose upper and lower components are linked with a solid bolt passing through a journal bearing of greater radius, permitting some rotation in the transverse plane, a minimal arc of abduction/adduction. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).
Predicate Devices
- Biomet Expandable Knee (K020381)