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Published on: January 24, 2018
The modified Lapidus arthrodesis: a retrospective analysis
A R Catanzariti1, R W Mendicino, M S Lee
1Department of Surgery, Western Pennsylvania Hospital, Pittsburgh 15224, USA.
Summary
The modified Lapidus arthrodesis effectively corrects hallux abducto valgus, showing significant improvement in intermetatarsal angles. This procedure is predictable and durable, with most patients healing uneventfully and returning to activity within 13 weeks.
Area of Science:
- Orthopedic Surgery
- Foot and Ankle Surgery
Background:
- Hallux abducto valgus is a common foot deformity.
- The Lapidus arthrodesis is a surgical technique used for correction.
Purpose of the Study:
- To review the outcomes of modified Lapidus arthrodesis procedures.
- To evaluate the effectiveness and complication rates of this surgical technique.
Main Methods:
- Retrospective review of 47 modified Lapidus arthrodesis procedures.
- Evaluation using weight-bearing radiographs, clinical examination, and chart review.
- Preoperative and postoperative measurement of intermetatarsal angles and first metatarsal length.
Main Results:
- Significant reduction in intermetatarsal angle (mean improvement of 10.8 degrees).
- Variable effects on first metatarsal length (shortening without graft, lengthening with graft).
- Low recurrence rate of hallux abducto valgus; 42 of 47 procedures healed uneventfully.
Conclusions:
- Modified Lapidus arthrodesis is a predictable and durable procedure for hallux abducto valgus.
- Complications are manageable, with a high rate of successful healing.
- The procedure facilitates a return to activity within an average of 13 weeks.

