J Korean Foot Ankle Soc.  2011 Jun;15(2):72-78.

Comparison of Clinical Outcome of Excision versus Osteosynthesis in Type II Accessory Navicular

• Lee J
• Youn H
• Choi WJ
• Lee JW

Abstract

PURPOSE
The purpose of this study is to compare the clinical outcome of excision versus osteosynthesis of type II accessory navicular performed by a single surgeon.
MATERIALS AND METHODS
Cases of 14 feet treated with excision and 13 feet by osteosynthesis for type II accessory navicular of 25 patients from 2002 to 2009 were included in this study. Radiological measurements and American Orthopaedic Foot and Ankle Society (AOFAS) midfoot scale was evaluated.
RESULTS
AOFAS midfoot scale of both excision and osteosynthesis groups at last follow-up showed improvement from pre-operation. However, there was no statistical difference in AOFAS midfoot scale and subjective satisfaction between the two groups at last follow-up. In detail of AOFAS midfoot scale, pain and footwear requirements showed statistically favorable results for the excision group, while activity limitation and support showed statistically favorable results for the osteosynthesis group. Subjective recovery time returning to daily activities and starting rehabilitation exercise were 14.6 weeks in the excision group and 13.7 weeks in the osteosynthesis group (p=0.025, Mann-Whitney). Suture anchor loosening was observed in one case in the excision group and non-union in two cases in the osteosynthesis group.
CONCLUSION
Both excision and osteosynthesis are favorable surgical methods, but each method has advantages and possible complications such as suture anchor loosening or non-union. Surgeon's preference, patient's chief complaint, specific needs of patient after the operation and consideration of the size of accessory navicular can be a criteria to consider when selecting a surgical method.

Keyword

Accessory navicular; Excision; Osteosynthesis

MeSH Terms

Animals
Ankle
Follow-Up Studies
Foot
Humans
Suture Anchors