UNASSIGNED: A prospective case series of patients with moderate to severe HV who underwent MICA was performed. The HV deformity correction was analyzed by comparing the preoperative and 12-week postoperative hallux valgus angle (HVA) and the intermetatarsal angle between the first and second rays (1-2 IMA). The ability of the radiographic first-ray squeeze test to predict the varus displacement of the first metatarsal was done by comparing the preoperative 1-2 IMA measured in the AP radiographic first-ray squeeze test (IMA-ST) with the intermetatarsal angle between the second metatarsal and the axis of the first metatarsal osteotomy proximal fragment (IAPF) taken 12 weeks postoperatively.
UNASSIGNED: Between July 2022 and May 2023, a total of 39 feet in 28 patients underwent MICA. The mean IMA improved from 13.8 (SD = 2.2) to 3.8 degrees (SD = 1.5) (P < .001), and the mean HVA improved from 27.8 (SD = 6.1) to 4.9 degrees (SD = 2.5) (P < .001). A linear regression analysis revealed that IMA-ST is highly associated with the 12 week assessed IAPF (P < .001).
UNASSIGNED: The preoperative radiographic first-ray squeeze test appears to predict with high fidelity the varus displacement of the proximal fragment of the first metatarsal that can occur after the MICA procedure.Level of Evidence: Level III, prospective cohort study.
■对接受MICA的中度至重度HV患者进行了前瞻性病例系列研究。通过比较术前和术后12周的外翻角(HVA)以及第一和第二射线(1-2IMA)之间的meta骨间角,分析了HV畸形的矫正。通过比较在AP射线照相第一射线挤压试验(IMA-ST)中测得的术前1-2IMA与在术后12周进行的第二meta骨和第一meta骨截骨碎片(IAPF)的轴之间的meta骨间角,可以得出射线照相第一射线挤压试验预测第一meta骨内翻移位的能力。
■在2022年7月至2023年5月之间,共有28名患者的39英尺接受了MICA。平均IMA从13.8度(SD=2.2)提高到3.8度(SD=1.5)(P<.001),平均HVA从27.8度(SD=6.1)提高到4.9度(SD=2.5)(P<.001)。线性回归分析显示IMA-ST与12周评估的IAPF高度相关(P<.001)。
■术前射线照相第一射线挤压试验似乎可以高保真度地预测MICA手术后可能发生的第一meta骨近端碎片的内翻移位。证据级别:三级,前瞻性队列研究。