THE MARGRON HIP REPLACEMENT SYSTEM
Device Facts
| Record ID | K992815 |
|---|---|
| Device Name | THE MARGRON HIP REPLACEMENT SYSTEM |
| Applicant | Portland Orthopaedics Pty. , Ltd. |
| Product Code | MEH · Orthopedic |
| Decision Date | Feb 7, 2000 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 888.3353 |
| Device Class | Class 2 |
| Attributes | Therapeutic |
Indications for Use
The Margron™ Hip Replacement System is intended for primary or revision restruction, without bone cement, of the femoral portion of a severely disabled and/or very painful hip ioint. where radiographic evidence of sufficient sound bone is present. The patient should be skeletally mature. The patient's condition should be due to one or more of the following: - Osteoarthritis . - Rheumatoid arthritis ● - Ankylosing spondylitis . - Psoriatic arthritis ● - Old osteomvelitis with a long infection free period and a normal WBC, C-. Reactive protein and ESR - Non union of femoral neck fracture or avascular necrosis of the femoral head ● - Post-traumatic fracture/dislocation of the hip . - Revision of an unsuccessful arthrodesis with either poor positioning or pain in ● the hip. or where low back pain or knee pain is becoming disabling - Revision of an unsuccessful uncemented or cemented hip replacement stem, ● providing sufficient bone stock is present - Revision of a previous unsuccessful femoral osteotomy, Girdlestone resection, . cup arthroplasty or hemi arthroplasty.
Device Story
Modular femoral hip replacement system; designed for uncemented fixation in high-quality bone. Components include tapering stem cone with external threads and longitudinal derotation columns; adjustable neck component for anteversion selection. Surgical procedure involves precision milling and tapping of femur; stem insertion via 'screw home' rotation. Unique instrumentation provided for insertion and extraction. Used by orthopedic surgeons in clinical settings. Provides stable femoral fixation; restores joint function; reduces pain in patients with severe hip disability. Materials include Chrome Cobalt (ASTM F-799-96) with Calcium Phosphate coating on upper stem half.
Clinical Evidence
Bench testing only. No clinical data provided. Substantial equivalence supported by fatigue, torque, and corrosion testing.
Technological Characteristics
Modular femoral prosthesis; Chrome Cobalt (ASTM F-799-96) construction; Calcium Phosphate coating on upper stem. Features tapering stem cone with external threads and longitudinal derotation columns. Mechanical fixation via 'screw home' rotation. No software or electronic components.
Indications for Use
Indicated for skeletally mature patients requiring primary or revision femoral hip reconstruction without bone cement due to osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, old osteomyelitis, femoral neck fracture non-union, avascular necrosis, post-traumatic hip dislocation, or revision of prior failed hip procedures (arthrodesis, uncemented/cemented stems, osteotomy, Girdlestone resection, cup/hemi-arthroplasty). Requires sufficient sound bone stock.
Regulatory Classification
Identification
A hip joint metal/ceramic/polymer semi-constrained cemented or nonporous uncemented prosthesis is a device intended to be implanted to replace a hip joint. This device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. The two-part femoral component consists of a femoral stem made of alloys to be fixed in the intramedullary canal of the femur by impaction with or without use of bone cement. The proximal end of the femoral stem is tapered with a surface that ensures positive locking with the spherical ceramic (aluminium oxide, A12 03 ) head of the femoral component. The acetabular component is made of ultra-high molecular weight polyethylene or ultra-high molecular weight polyethylene reinforced with nonporous metal alloys, and used with or without bone cement.
Predicate Devices
- Modular Femoral Hip System (K980020)
- Impact (K942027)
- Mallory-Head (K921181)
- S-ROM (K851422, K912713, K913231)
- Infinity (K942115)
- Modular Hip System (RMHS) (K912593)