Abstract | PURPOSE: The effectiveness of minimally invasive surgery (MIS)-distal chevron metatarsal osteotomy (DCMO) for the correction of moderate-to-severe hallux valgus deformity is unclear. This study aimed to compare the radiographic and clinical outcomes of our novel MIS-proximal chevron metatarsal osteotomy (PCMO) with those of MIS-DCMO performed during the same timeframe. METHODS: We prospectively compared the outcomes of patients who underwent MIS-PCMO (n = 20 patients; 22 cases) with those of patients who underwent MIS-DCMO (n = 23 patients; 26 cases) for moderate-to-severe hallux valgus deformity ( hallux valgus angle [HVA] ≥ 30° and first-to-second intermetatarsal angle [IMA] ≥ 13°) between June 2017 and January 2019. The minimum follow-up duration for study inclusion was two years. The HVA, IMA, distal metatarsal articular angle ( DMAA), relative length of the second metatarsal, medial sesamoid position, and Meary's angle to evaluate the degree of deformity correction and its maintenance were measured pre-operatively and at the final follow-up. RESULTS: Compared with MIS-DCMO, MIS-PCMO resulted in significantly greater correction of the HVA (P < 0.001) and IMA (P = 0.01), along with Meary's angle improvement (P < 0.001); however, the DMAA worsened (P = 0 .01). Furthermore, a significantly greater change was found in the relative second metatarsal length in the MIS-DCMO group (P = 0.01). No significant between-group differences were noted in the correction of the medial sesamoid position (P = 0.445). CONCLUSION: Compared with MIS-DCMO, MIS-PCMO can be a better option for correcting moderate-to-severe hallux valgus deformities. However, this technique should be applied carefully when the pre-operative DMAA is already large because the DMAA can become worse post-operatively.
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Authors | Jun Young Choi, Byung Ho Kim, Jin Soo Suh |
Journal | International orthopaedics
(Int Orthop)
Vol. 45
Issue 11
Pg. 2933-2943
(11 2021)
ISSN: 1432-5195 [Electronic] Germany |
PMID | 34272980
(Publication Type: Journal Article)
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Copyright | © 2021. SICOT aisbl. |
Topics |
- Hallux Valgus
(diagnostic imaging, surgery)
- Humans
- Metatarsal Bones
(diagnostic imaging, surgery)
- Metatarsophalangeal Joint
- Osteotomy
- Prospective Studies
- Treatment Outcome
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