Orthop Surg. 2022 Sep 14. doi: 10.1111/os.13479. Online ahead of print.
OBJECTIVE: Traditional lateral soft tissue release (LSTR) was conducted by an additional dorsal first web incision, as the malformed thick scar and neuritis were common after surgery. A new method of lateral soft tissue release in a single medial incision via dorsal flap over the first metatarsal (LSTR-SMI-DFFM) should be recommended. The objective is to investigate the clinical effectiveness and safety of scarf + Akin osteotomy (SAO) combined with lateral soft tissue release in a single medial incision via dorsal flap over the first metatarsal (LSTR-SMI-DFFM) for moderate to severe hallux valgus.
METHODS: Patients who were performed surgery for hallux valgus from April 2014 to June 2020 were retrospectively reviewed. The visual analog scale (VAS) was recorded before surgery and during follow-up, as well as the forefoot score of the American Orthopaedic Foot and Ankle Society (AOFAS). Patient satisfaction was evaluated at the follow-up time. The preoperative and follow-up weightbearing X-ray were conducted in all patients. The radiological parameters of hallux valgus angle (HVA), intermetatarsal angle (IMA), and distal metatarsal articular angle (DMAA) were measured. Tibial sesamoid position (TSP) was also recorded according to seven-part grading system. The quantitative data were performed as mean ± standard deviation or median ± interquartile range. Student’s t test was performed in HVA, IMA, and DMAA. The TSP, VAS, and AOFAS were statistical analyzed by Mann-Whitney U test. p value of <0.05 was considered significant.
RESULTS: There were 123 feet conducted surgery in 96 patients. The AOFAS score improved a lot which was preoperative 39 to 100 at the follow-up time and VAS was 4 to 0 (p < 0.001). A total of 63 (51.2%) patients were very satisfied, 47 (38.2%) were satisfied, five (4.1%) were undecided and eight (6.5%) were not satisfied. The HVA, IMA, DMAA, and TSP were all decreased after surgery and were statistically significant (p < 0.001).
CONCLUSION: The SAO combined with a LSTR-SMI-DFFM for moderate to severe hallux valgus is effective and safe with pretty good clinical and radiographic results, as well as minimal complications. The corrections of AOFAS and VAS conformed to the minimum clinically important difference (MCID).