[Minimally invasive osteotomy and manual reduction for hallux valgus]

To explore clinical effects of minimally invasive osteotomy and manual reduction in treating hallux valgus.

From January 2018 to May 2019, 31 patients (42 feet) with hallux valgus were treated with minimally invasive osteotomy and manual reduction, including 3 males and 28 females aged from 18 to 76 years old with an average of (50.1± 4.9) years old. Preoperative and postoperative hallux valgus (HVA), intermetatarsal angles(IMA), length difference between 1 and 2 metatarsals were recorded and compared, and American Orthopedic Foot and Ankle Society (AOFAS)score were observed and measured.

Thirty-one patients (42 feet) were followed up from 14 to 18 months with an average of (15.1± 1.2) months. HVA, IM before operation were (38.5±5.4)°, (13.0± 1.1)°, and improved to (14.3±4.7)°and (9.1±1.5)°after operation respectively(P<0.05). Preopertaive length difference between 1 and 2 metatarsals was 2-4(-0.59±1.80) mm, and 0 to -6(-3.53±1.60) mm after operation, the average shortening of the first metatarsal was 2.94 mm. There were significant difference between preoperative and postoperative. Preoperative AOFAS score was 57.8±9.7, increased to 92.1±9.3 at the final follow-up, there was significant differences (P<0.05). According to standard of AOFAS score, 32 feet obtain excellent results, 16 good and 3 moderate.

Minimally invasive osteotomy and manual reduction in treating hallux valgus have advantages of shorter operation time, less length of incision, and could correct hallux valgus deformity, improve front feet and receive good clinical effect in further.