J Korean Foot Ankle Soc.  2020 Dec;24(4):129-134. 10.14193/jkfas.2020.24.4.129.

A Comparison of Proximal and Distal Chevron Osteotomy for the Correction of Severe Hallux Valgus Deformity

Affiliations
  • 1Department of Orthopaedic Surgery, College of Medicine, Chosun University, Gwangju, Korea

Abstract

Purpose
This study compared the results of proximal and distal chevron osteotomy in patients with severe hallux valgus. Several recent studies have shown that the indications for distal metatarsal osteotomy with a distal soft-tissue procedure could be extended to include severe hallux valgus.
Materials and Methods
This study analyzed 127 severe hallux valgus surgeries. Of these, 76 patients (76 feet) were excluded for lack of adequate follow-up and additional procedures (Akin procedure), leaving 51 patients (51 feet) in the study. The mean age of the patients was 58 years (21~83 years), and the mean follow-up duration was 18 months (12~32 months). The patients were divided into two groups. Group 1 underwent distal chevron osteotomy, and group 2 underwent proximal chevron osteotomy performed sequentially by a single surgeon. The patients were interviewed for the American Orthopaedic Foot and Ankle Society (AOFAS) score before and one year after surgery. The anteroposterior weight-bearing radiography of the foot was taken before and one year after surgery.
Results
There were no significant differences in pain and function after one year in either group. Both groups experienced significant pain reduction and an increase in the AOFAS score. Significant improvement of the hallux valgus and intermetatarsal angle corrections was observed in both groups, and the sesamoid position was similar in each group. More improvement in radiographic correction of intermetatarsal angle was noted in group 2. Both procedures gave similar good clinical and radiological outcomes.
Conclusion
This study suggests that a distal chevron osteotomy with a distal soft-tissue procedure is as effective and reliable a means of correcting severe hallux valgus as a proximal chevron osteotomy with a distal soft-tissue procedure.

Keyword

Foot; Severe hallux valgus; Distal metatarsal osteotomy

Figure

  • Fig. 1 Modified distal chevron osteotomy. Compared to distal chevron osteotomy, apex of modified distal chevron osteotomy is more proximal to the subchondral bone and in the center of the first metatarsal head.

  • Fig. 2 Position of medial sesamoid was divided into 7 groups. Data from the article of Bluth et al. (Biomechanical considerations. In: Hara B, Locke R, Lowe W; American college of foot surgeons, editors. Complications in foot surgery: prevention and management. 1976:41-66).7)

  • Fig. 3 The left foot of 47-year-old female shows severe hallux valgus deformity. The deformity was corrected with distal chevron osteotomy and distal soft tissue procedure. (A) The right foot shows preoperative hallux valgus angle was 43° and the 1st intermetatarsal angle was 21°. (B) Postoperative radiography. (C) At postoperative 1 year, the radiograph shows correction. Hallux valgus angle 10°, the 1st intermetatarsal angle was 7°. Clinical result is good. No pain, no limitation of activity was complained.

  • Fig. 4 The left foot of 66-year-old female shows severe hallux valgus deformity. The deformity was corrected with proximal chevron metatarsal osteotomy and distal soft tissue procedure. (A) The left foot shows preoperative hallux valgus angle was 40° and the 1st intermetatarsal angle was 22°. (B) Postoperative radiography. (C) At postoperative 1 year, the radiograph shows correction. Hallux valgus angle 10°, the 1st intermetatarsal angle was 7°. Clinical result is good. No pain, no limitation of activity was complained.

  • Fig. 5 The right foot of 63-year-old female shows severe hallux valgus deformity. The deformity was adequately corrected with distal chevron osteotomy and distal soft tissue procedure. (A, B) The right foot shows preoperative hallux valgus angle was 44° and the 1st intermetatarsal angle was 20°. (C) Postoperative radiography. (D) At postoperative 1 year, the radiograph shows well maintained correction of the deformity. Hallux valgus angle 9°, the 1st intermetatarsal angle was 6°. (E) At postoperative 1 year, the deformity was well corrected and there was no soft tissue problem.


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