ObjectiveTo review the pathological characteristics of calcaneal fracture malunions and the research progress of surgical treatment, so as to provide a reference for standardized clinical diagnosis and treatment. Methods The relevant research literature on calcaneal fracture malunions at home and abroad in recent years was reviewed. And the pathological characteristics, imaging manifestations, classification and the latest surgical treatment strategies of calcaneal fracture malunions were systematically expounded. Results Malunion may ensue after calcaneal fractures if conservative treatment fails or surgical intervention is improperly performed, leading to abnormal foot biomechanics and severe functional impairment. Typical pathological changes include three-dimensional morphological disorders of the calcaneus (abnormal width, height loss, and varus-valgus deformity), collapse of the subtalar articular surface accompanied by joint mismatch, secondary joint degeneration, Achilles tendon contracture, and lateral soft tissue impingement syndrome. Given the complex pathological anatomy after malunion, surgical plans should be individually tailored. The clinically used Stephens-Sanders classification and Zwipp-Rammelt classification provide a reliable basis for the accurate selection of treatment modalities. Staged treatments such as subtalar arthrodesis, osteotomy correction, and soft tissue release can effectively improve ankle and foot function. ConclusionIn recent years, the biomechanical mechanisms, imaging evaluation systems, and reconstructive surgical strategies of calcaneal fracture malunion have become research hotspots. The selection of treatment plans should take into account specific clinical symptoms and morphological changes of the calcaneus, which is crucial for subsequent recovery. In the future, it is necessary to focus on individual differences, promote the integration of diagnosis and treatment, establish evidence-based guidelines, and achieve accurate and long-term deformity correction and functional reconstruction.
Objective To compare the efficacy of the fourth-generation minimally invasive technique—minimally invasive extra-articular metaphyseal distal transverse osteotomy (META) and Chevron osteotomy in treatment of hallux valgus. Methods A total of 80 patients with hallux valgus, who underwent single-foot surgery between July 2023 and January 2025 and met the inclusion criteria, were included in the study. Among them, 40 patients were treated with META and 40 with Chevron osteotomy. There was no significant difference in baseline data between the two groups (P>0.05), including gender, age, height, weight, body mass index, disease duration, lesion site, hallux valgus deformity degree, as well as preoperative scores of each item (pain, function, alignment, total score) in the American Orthopaedic Foot and Ankle Society Hallux Metatarsophalangeal-Interphalangeal Joint Scale (AOFAS-Hallux-MTP-IP), scores of each item (pain, walking/standing, social interaction, total score) in the Manchester-Oxford Foot Questionnaire (MOXFQ), hallux valgus angle (HVA), intermetatarsal angle (IMA), distal metatarsal articular angle (DMAA), sesamoid position, and the 1st metatarsal head morphology. The postoperative AOFAS-Hallux-MTP-IP scores, MOXFQ scores, as well as HVA, IMA, DMAA, the 1st metatarsal head morphology, and sesamoid position measured based on weight-bearing foot X-ray films were compared between the two groups; the occurrence of postoperative complications was recorded. Results All patients in both groups were followed up 6-18 months, and there was no significant difference in the follow-up time between the two groups (P>0.05). At last follow-up, the scores of all items in AOFAS-Hallux-MTP-IP in both groups were higher than those before operation, and the scores of all items in MOXFQ were lower than those before operation, with significant differences (P<0.05); there was no significant difference in the change values of all items in MOXFQ between the two groups (P>0.05). The change value in AOFAS function score in the META group was significantly higher than that in the Chevron osteotomy group (P<0.05), while there was no significant difference in the change value of AOFAS pain score, alignment score, and total score between the two groups (P>0.05). After operation, 1 case (2.5%) of superficial incision infection and 2 cases (5.0%) of numbness around the incision occurred in the Chevron osteotomy group, while only 2 cases (5.0%) of numbness around the incision occurred in the META group. Imaging reexamination showed that HVA, IMA, and DMAA in both groups were signifncatly smaller than those before operation (P<0.05), and there was no significant difference in the change values of the above angles between the two groups (P>0.05). The 1st metatarsal head morphology and sesamoid position in the META group were better than those in the Chevron osteotomy group after operation, with significant differences (P<0.05). Conclusion Both META and Chevron osteotomy can correct hallux valgus deformity, improve foot function, and relieve pain, but META has more advantages in correcting metatarsal rotation and reducing dislocated sesamoids.
