Minimal Clinically Important Differences for American Orthopaedic Foot &amp; Ankle Society Score in Hallux Valgus Surgery

Chan, Hiok Yang; Chen, Jerry; Zainul‐Abidin, Suraya; Ying, Hao; Koo, Kevin; Rikhraj, Inderjeet Singh

doi:10.1177/1071100716688724

Cited by 95 publications

(76 citation statements)

References 23 publications

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“…The minimal clinically important difference (MCID) of the AOFAS score following calcaneal fracture surgery is not known, but the AOFAS difference between 2D and 3D groups is well below the known MCID for hallux valgus surgery (7.9 points). 8 SF-36 scores are comparable to other large clinical trials. 2 , 17 …”

Section: Discussionsupporting

confidence: 66%

Intraoperative Effect of 2D vs 3D Fluoroscopy on Quality of Reduction and Patient-Related Outcome in Calcaneal Fracture Surgery

et al. 2020

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Background: Three-dimensional (3D) fluoroscopy is thought to be advantageous in the open reduction and internal fixation (ORIF) of calcaneal fractures. The goal of this multicenter randomized controlled trial was to investigate the clinical effect of additional intraoperative 3D fluoroscopy on postoperative quality of reduction and fixation and patient-reported outcome as compared to conventional 2-dimensional (2D) fluoroscopy in patients with intra-articular fractures of the calcaneus. Methods: Patients were randomized to 3D or conventional 2D fluoroscopy during operative treatment of calcaneal fractures. Primary outcome was the difference in quality of fracture reduction and implant position on postoperative computed tomography (CT). Secondary endpoints included intraoperative corrections (prior to wound closure), complications, and revision surgery (after wound closure). Function and patient-reported outcome were evaluated after surgery and included range of motion, Foot and Ankle Outcome Score (FAOS), American Orthopaedic Foot & Ankle Society (AOFAS) score, Short-Form 36 (SF-36) questionnaires, and Kellgren-Lawrence posttraumatic osteoarthritis classification. A total of 102 calcaneal fractures were included in the study in 100 patients. Fifty fractures were randomized to the 3D group and 52 to the 2D group. Results: There was a statistically significant difference in duration of surgery between the groups (2D 125 min vs 3D 147 min; P < .001). After 3D fluoroscopy, a total of 57 intraoperative corrections were performed in 28 patients (56%). The postoperative CT scan revealed an indication for additional revision of reduction or implant position in 69% of the 3D group vs 60% in the 2D fluoroscopy group. At 2 years, there was no difference in number of revision surgery, complications, FAOS, AOFAS score, SF-36 score, or posttraumatic osteoarthritis. Conclusion: The use of intraoperative 3D fluoroscopy in the treatment of intra-articular calcaneal fractures prolongs the operative procedures without improving the quality of reduction and fixation. There was no benefit of intraoperative 3D fluoroscopy with regard to postoperative complications, quality of life, functional outcome, or posttraumatic osteoarthritis. Level of Evidence: Level I, prospective randomized controlled study.

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Section: Discussionsupporting

confidence: 66%

Intraoperative Effect of 2D vs 3D Fluoroscopy on Quality of Reduction and Patient-Related Outcome in Calcaneal Fracture Surgery

et al. 2020

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“…A sample size calculation was done before study onset on the basis of the AOFAS score. Chan et al stated a minimal clinically important difference of 19 points on average [ 21 ]. Other input parameter of the sample size calculation was a standard deviation of 15 points, an alpha of 0.05, and a beta of 0.1.…”

Section: Methodsmentioning

confidence: 99%

Minimally invasive versus open chevron osteotomy for hallux valgus correction: a randomized controlled trial

Kaufmann¹,

Dammerer

Heyenbrock

et al. 2018

International Orthopaedics (SICOT)

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Purpose The purpose of this study was to compare a minimally invasive chevron osteotomy technique (MIS group) and the wellestablished open chevron technique (OC group) for correction of hallux valgus deformity. Methods Patients who were scheduled to undergo a hallux valgus surgery by means of a distal chevron osteotomy were randomly assigned to one of the two groups. Pre-operatively, six weeks, 12 weeks, and nine months post-operatively the following outcome parameters were determined: Visual Analog Scores (VAS) of pain, the American Orthopedic Foot and Ankle Society (AOFAS) forefoot score, radiographic outcome measures, range of motion (ROM), and patient satisfaction. Results Forty-seven cases were analyzed (25 MIS group; 22 OC group). Both operative techniques achieved significant correction of the hallux deformity. The intermetatarsal angle (IMA) improved from 15.1°to 5.8°in the OC and from 14°to 6.8°in the MIS group, whereas the hallux valgus angle (HVA) improved from 28.3°to 8.5°in the OC versus 26.4°to 6.9°in the MIS group. No significant differences were observed between the groups by any of the determined outcome parameters. Regarding patient satisfaction, statistically significant differences were found between MIS and open surgery 12 weeks post-operatively in favour of the MIS group (p = 0.022). Conclusion With the minimally invasive chevron osteotomy, radiological and clinical outcome is comparable to the open technique.

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“…Minimal clinically important difference (MCID) calculates the smallest yet significant improvement perceived by the patient. The MCID score of > 8 and > 30.2, represents good satisfaction in respectively FAAM and AOFAS outcomes (Chan et al, 2017;Martin et al, 2005).…”

Section: Clinical Assessmentmentioning

confidence: 99%

Outcome of the modified Lapidus procedure for hallux valgus deformity during the first year following surgery: A prospective clinical and gait analysis study

Moerenhout

Chopra

Crevoisier

2019

Clinical Biomechanics

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Minimal Clinically Important Differences for American Orthopaedic Foot & Ankle Society Score in Hallux Valgus Surgery

Abstract: Level III, retrospective comparative series.

Cited by 95 publications

References 23 publications

Intraoperative Effect of 2D vs 3D Fluoroscopy on Quality of Reduction and Patient-Related Outcome in Calcaneal Fracture Surgery

Intraoperative Effect of 2D vs 3D Fluoroscopy on Quality of Reduction and Patient-Related Outcome in Calcaneal Fracture Surgery

Minimally invasive versus open chevron osteotomy for hallux valgus correction: a randomized controlled trial

Outcome of the modified Lapidus procedure for hallux valgus deformity during the first year following surgery: A prospective clinical and gait analysis study

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