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Hallux valgus according to Austin / Chevron

Case Study & Literature on Shark Screw®

The following case documentation shows the pre- and postoperative course of a hallux valgus correction according to Austin / Chevron. The patient was treated with a screw made of human bone (Shark Screw®). Brcic e. al. showed in 2021 that Shark Screw® is colonized by cells within a few months and, like other allografts, remodels into its own bone.1

Case study hallux valgus after Austin / Chevron:

The intermetatarsal angle is well below 20° in the loaded foot, so the Austin / Chevron subcapital metatarsal osteotomy is used.

The patient complained of persistent pain before hallux valgus surgery. These could be permanently gelid by the hallux surgery. Since Shark Screw® is made of human donor bone (allograft), the patient bears no risk of metal removal after Austin / Chevron hallux valgus surgery.2

Surgical Technique

The most common surgical technique for hallux valgus after Austin / Chevron can be found in this hallux valgus after Austin / Chevron surgery video or in these surgical instructions for hallux valgus surgery after Austin / Chevron.

X-ray image preoperatively

Hallux valgus, right

X-ray postoperatively, oblique

Lying Shark Screw® graft recognizable. Correction by subcapital metatarsal osteotomy according to Austin

8 weeks postoperatively

Good build through of the osteotomy and good hold of the graft

6 months postoperatively

Good insertion and remodeling of the bone screw - graft only rudimentarily visible

“As a private physician, it is important to me that I can provide my patients with the best possible, safe and innovative care, and I am able to do this excellently with Shark Screw®. I save my patients the risk of a second operation for metal removal, which is important to me and my patients.”

Case study provided by Dr. Klaus Pastl | orthopedist and foot specialist in Linz / Austria.

Dr. Klaus Pastl

How to stay up to date as an orthopedist:

1 Brcic I, Pastl K, Plank H et al. Incorporation of an allogenic cortical bone graft following arthrodesis of the first metatarsophalangeal joint in a patient with hallux rigidus. Life (Basel). 2021, 11.

2 Pastl K, Schimetta W. The application of an allogeneic bone screw for osteosynthesis in hand and foot surgery: A case series. Arch Orthop Trauma Surg. 2021.

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