The Biomet, Inc. Custom Performa Knee: Patellofemoral Arthroplast

Indications:

Primary osteoarthritis of patello/femoral joint ⁵
Posttraumatic osteoarthritis secondary to patella fracture ^6,7
Recurrent patella subluxation/dislocation ⁷
Anterior knee pain ^1-7
Chondrocalcinosis of patello/femoral joint ⁴
Chondromalacia ⁸
Failure of conservative treatment ⁷

Contraindications:

Patella baja ⁴
Tibio/femoral osteoarthritis ²

Biomet Custom Patellofemoral Implant Design Rationale:

Little or no loss of underlying bone = easy revision to TKR
Maximum coverage of contact between patella and femur throughout range of motion¹
Relatively simple and quick procedure (60-75 minutes)

Additional Information:

Partial synovectomy required
Lateral release may be required
Billing codes 27442 (Femoral Implant) 24738 (Patellar Implant)

Custom Device Procedure: Average time: 1. CT Scan received by engineer
2. Building the bone model
3. Designing the implant
4. Design Review/Approval - OPTIONAL*
5. Molding and Casting
6. Finishing out the part (including sterilization)

(5-business days)
(2-4-business days)
(5-business days min.)
(13-business days)
(9-business days)
Total: 34-36 business days

* Not usually performed by surgeons that routinely use Biomet PMI for this device.

PATIENT-MATCHED PATELLOFEMORAL IMPLANT SURGICAL TECHNIQUE AS PERFORMED BY JAMES E. BUTLER, M.D.

For additional information, contact Aaron Smits (800-348-9500 ext. 1171) or Adam Finley (800-348-9500 ext. 1175).

References:

Aglietti P, Insall Jn, Walker PN and Trent P. A new patella prosthesis: Design and application. Clin Orthop 107: 175-87. 1975.
Arciero RA and Toomey HE. Patellofemoral arthoplasty. A three- to nine- year follow-up study. Clin Orthop. 236: 60-71. 1988.
Argenson JNA, Guillaume JM, and Aubaniac JM. Is there a place for patellofemoral arthroplasty? Clin Orthop 321: 162-67. 1995.
Cartier P, Sanouiller JL, and Grelsamer R. Patellofemoral arthroplasty. 2-12 year follow-up study. J Arthroplasty 5 (1): 49-55. 1990.
De Cloedt P, Legaye J, and Lokietek W. Femoro-patellar prosthesis. A retrospective study of 45 consecutive cases with a follow-up of 3-12 years. Acta Orthop bleg 65: 170-175 1999.
de Winter WE, Feith R, and van Loon CJ. The Richards type II patellofemoral arthroplasty: 26 cases followed for 1-20 years. Acta Orthop Scand 72: 487-90. 2001.
Krajca-Radcliffe JB and Coker TP. Patellofemoral arthroplasty. A 2- to 18- year follow-up study. Cin Orthop 330: 143-51. 1996.
Worrell RV. Prosthetic resurfacing of the patella. Clin Orthop144: 91-97. 1979.