BioPro Hemiarthroplasty Publications

Long-Term Results of Hemiarthroplasty Compared with Arthrodesis for Osteoarthritis of the First Metatarsophalangeal Joint.

Stefan R. Beekhuizen, MD, Timothy Voskuijl, MD, Ron Onstenk, MD

The Journal of Foot & Ankle Surgery

A total of 31 patients underwent hemiarthroplasty with the BioPro Hemi and 47 patients underwent arthrodesis with a mean follow-up of 8.3 years. Hemiarthroplasty with the BioPro Hemi reported higher AOFAS-HMI scores (89.7 vs 72.8), lower pain scores (74% vs 38%), higher patient satisfaction (97% vs 60%), faster return to activity (6.7 weeks vs 11.7 weeks), similar revision rates (3.2% vs 8.5%), and lower repeat surgery rates (9.6% vs 70.2%).

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Short-Term Clinical Outcome of Hemiarthroplasty Versus Arthrodesis for End-Stage Hallux Rigidus

Karin H. Simons, MD, Pieter van der Woude, MD, Frank W.M. Faber, MD, PhD, Paulien M. van Kampen, PhD, Bregje J.W. Thomassen, PhD

The Journal of Foot and Ankle Surgery

A total of 46 patients underwent hemiarthroplasty with the BioPro Hemi and 132 patients underwent arthrodesis with a mean follow-up of 38 months. The study reported higher patient satisfaction rates (81.6% vs 64%) for the BioPro Hemi. A total of two hemiarthroplasties (4.1%) required conversion to arthrodesis. The arthrodesis group reported five (3.7%) non-unions and (11.1%) required a second surgery due to pain or infection.

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A Retrospective Cohort Study of the BioPro Hemiarthroplasty Prosthesis

Christine C. Salonga, DPM, David C. Novicki, DPM, FACFAS, Martin M. Pressman, DPM, FACFAS, Scot Malay, DPM, MSCE, FACFAS 

The Journal of Foot and Ankle Surgery 

A retrospective study of 76 patients who underwent hemiarthroplasty with the BioPro Hemi with a mean follow-up of 2.91 years showed an increase of 26° range of motion and concluded that the BioPro Hemi is a useful option for the treatment of first metatarsophalangeal joint degeneration.

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First metatarsophalangeal hemiarthroplasty for hallux rigidus

Eric Giza, MD, Martin Sullivan, MD, Dan Ocel, MD, Gregory Lundeen, MD, Matt Mitchell, MD, Lauren Frizzell, MD

International Orthopaedics

20 patients that underwent hemiarthroplasty with the BioPro Hemi reported an increase of 15° range of motion and a reduction in VAS pain score from 5 to 2.5. Painless ambulation occurred after six weeks with max improvement by six months. Authors recommend that the use of the MTP hemiarthroplasty is limited to patients with hallux rigidus and that it be avoided in those with hallux–sesamoid arthritis, hallux valgus, and inflammatory arthritis.

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A Prospective Investigation of the Biopro Hemi-Arthroplasty for the First Metatarsophalangeal Joint

Charles G. Kissel, DPM, FACFAS, Zeeshan S. Husain, DPM AACFAS, Paul H. Wooley, PhD, Michael Kruger, MS, Mark A. Schumaker, DPM, Michael Sullivan, DPM, and Todd Snoeyink, DPM

The Journal of Foot and Ankle Surgery

23 patients with metatarsal head cartilage degeneration of 71.8% reported an ACFAS Universal Foot and Ankle Score increase of 41.2 to 80.4 and with an increase of 46.9° (20.6 to 67.5) range of motion.  These outcomes showed drastic improvements despite the amount of double-sided cartilage degeneration.

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Contemporary Approaches to Stage II and III Hallux Rigidus: The Role of Metallic Hemiarthroplasty of the Proximal Phalanx

Warren S. Taranow, DO, Michael J. Moutsatson, DO, Jonathan M. Cooper, DO

Foot and Ankle Clinics

28 patients that underwent hemiarthroplasty with the BioPro Hemi were evaluated under the Foot Function Index (FFI). Mean pain scores improved (76.14 to 18.80), mean disability scores improved (75.43 to 18.40), and mean activity scores improved (29.33 to 8.09).  A total of 26 patients (92.9%) would recommend the procedure.

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First Metatarsophalangeal Hemiarthroplasty for Grade III and IV Hallux Rigidus

Eric Giza, MD and Martin R. Sullivan, MD

Techniques in Foot & Ankle Surgery

No cases of infection or loosening of 103 hemiarthroplasties performed over a span of four years. The authors report that the BioPro Hemi is a reliable option and particularly beneficial when used in middle-aged females with grade III or IV hallux rigidus who wish to wear shoes of varying heel height

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BIOPRO Resurfacing Endoprosthesis Versus Periarticular Osteotomy for Hallux Rigidus: Short-Term Follow-Up and Analysis

Thomas S. Roukis, DPM, AACFAS, and Charles O. Townley, MD

The Journal of Foot and Ankle Surgery

7 patients (9 procedures) were reviewed in a prospective hallux rigidus study at one year postoperative. The mean hallux Metatarsophalangeal-Interphalangeal Score increased 26.7 points (51.1 to 77.8). Range of motion was increased by 7 degrees.

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Metallic Proximal Phalangeal Hemiarthroplasty for Hallux Rigidus

Warren Taranow, DO, Charles O Townley, MD

Foot and Ankle Clinics

Hemiarthoplasty procedure has been shown to provide excellent long-term results in a high percentage of patients. It is viewed as a sensible alternative to cheilectomy and fusion in cases of moderate to severe arthrosis.

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A metallic hemiarthroplasty resurfacing prosthesis for the hallux metatarsophalangeal joint

Charles O Townley, MD, Warren Taranow, DO

Foot & Ankle International

279 joints that underwent hemiarthroplasty with the BioPro Hemi over a 40-year period were reviewed.  Follow-up at 8 months to 33 years after surgery revealed good or excellent clinical results in 95%. The time to follow-up was in excess of 5 years in 101 (36%) of the procedures, beyond 10 years in 62 (22%), and longer than 20 years in 23 (8%).

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Hallux Rigidus: A Treatment Algorithm

Warren S. Taranow, DO and Judson R. Moore, PA-C, JD

Techniques in Foot & Ankle Surgery

A treatment algorithm for hallux rigidus is discussed. The algorithm recommended Hemiarthroplasty for patients over 50 years of age with stage II and III with less than 50% ROM. Phalangeal-based implants avoid the shear forces, preserve some motion while decreasing pain through joint decompression and resurfacing.

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Metallic hemiarthroplasty or arthrodesis of the first metatarsophalangeal joint as treatment for hallux rigidus: A systematic review and meta-analysis

Robin T.A.L. de Bot, Hidde D. Veldman, Roxanne Eurlings, Jasper Stevens, Joris P.S. Hermus, Adhiambo M. Witlox

Foot and Ankle Surgery

A meta-analysis of 33 studies on arthrodesis and metallic hemiarthroplasty. The review shows that both metallic hemiarthroplasty and arthrodesis have excellent clinical outcomes and acceptable complication/revision rates.

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