Bunion (Hallux Valgus) Surgery: What the Latest Evidence Says About Measuring Success
Considering bunion (hallux valgus) surgery and wondering how surgeons judge a good outcome? You’re not alone. With more of us asking for clear, patient-centred results, understanding which scores truly reflect recovery—pain relief, function, and satisfaction—matters. A recent high-quality review sheds fresh light on which patient-reported outcome measures (PROMs) best capture success after bunion surgery, and the findings could influence how we monitor recovery here at Liv Harley Street Hospital.
At a Glance: The Key Takeaway
A 2024 systematic review of prospective comparative studies and randomised trials found that the most commonly used scores after bunion surgery are AOFAS (55% of studies) and VAS pain scores (30%). However, the authors conclude that the MOXFQ may be a more valid alternative for assessing outcomes following hallux valgus surgery (10.1007/s00402-024-05523-y; PubMed 39249134; PMC PMC11582207).
Why PROMs Matter in Bunion (Hallux Valgus) Surgery
For patients, the real-world wins are simple: less pain, better shoe comfort, improved walking, and cosmetic satisfaction. PROMs translate those lived experiences into measurable data. In an era of value-based care, using the right PROMs helps us compare techniques, set expectations, and personalise rehabilitation.
What This 2024 Systematic Review Did
The review analysed prospective, comparative studies over the last decade comparing bunion surgery procedures or severity grades, with two independent reviewers screening and extracting data. In total, 46 studies made the cut: 30 randomised controlled trials and 16 non-randomised prospective studies. The focus was the specific PROMs used to evaluate outcomes after hallux valgus surgery. Evidence level: I (systematic review of level I–II studies). Full citation: Arch Orthop Trauma Surg. 2024 Nov;144(11):4745-4752. doi: 10.1007/s00402-024-05523-y.
Which Outcome Scores Are Most Used After Bunion Surgery?
The review found:
- AOFAS (American Orthopaedic Foot & Ankle Society Hallux MTP-IP scale): used in 55% of studies
- VAS (Visual Analogue Scale for pain): used in 30% of studies
Interestingly, there was no meaningful difference in which scores were chosen based on study design (RCT vs. non-randomised) or osteotomy type. This suggests habit and convention—rather than validity—may be driving score selection.
So, Is There a Better Measure? Enter the MOXFQ
The authors conclude that, based on available literature, the MOXFQ (Manchester-Oxford Foot Questionnaire) is a more valid alternative for hallux valgus outcomes. That aligns with broader UK practice, as MOXFQ was developed for foot and ankle disorders and has strong psychometric properties in bunion cohorts. While AOFAS is popular, it blends clinician-rated elements and has recognised limitations, whereas MOXFQ is fully patient-reported and sensitive to changes that matter to daily life.
Quick Definitions: AOFAS, VAS, and MOXFQ
- AOFAS: Composite score including pain, function, and alignment; part clinician-rated, part patient-reported.
- VAS: A simple 0–10 (or 0–100) pain scale; useful, but narrow (pain only).
- MOXFQ: A validated patient-reported questionnaire with domains covering walking/standing, pain, and social interaction/appearance—highly relevant to bunion recovery.
What This Means If You’re Considering Bunion Surgery
When planning bunion (hallux valgus) surgery, it’s reasonable to ask which outcomes your team will track. We favour tools that capture your perspective, not just what we see on X-rays. In practice, that often means using MOXFQ alongside pain and function metrics to give a fuller picture of recovery—shoe comfort, distance tolerance, and confidence in your foot.
Expert Observations from Clinic
In our experience, patients judge success by returning to desired footwear and activities without persistent forefoot pain. AOFAS can look “good” on paper while patients still struggle with shoe wear or swelling. MOXFQ tends to pick up those nuances. As ever, the best approach blends validated PROMs with clinical assessment and your goals.
FAQs: Bunion (Hallux Valgus) Surgery Outcomes, Answered
What is the most commonly used outcome measure after bunion surgery?
AOFAS is the most frequently used in the literature, followed by VAS pain scores, according to the 2024 review (10.1007/s00402-024-05523-y).
Which measure is more valid for patients?
The review supports MOXFQ as a more valid alternative for hallux valgus outcomes, reflecting real-life function and satisfaction more comprehensively.
Do different surgical techniques require different PROMs?
The review did not find differences in score usage by osteotomy type, but validity still favours MOXFQ across techniques.
How We Apply This Evidence at Liv Harley Street Hospital
We aim to report outcomes that matter to you. For bunion surgery, that typically means using MOXFQ alongside pain scores and functional milestones, documented at baseline and follow-ups. This approach supports shared decision-making and clearer expectations about recovery timelines.
Limitations to Keep in Mind
While this is a level I review, it summarises score usage patterns rather than directly comparing psychometric performance across instruments within the same cohort. Still, the convergence of evidence backing MOXFQ—combined with its adoption in UK foot and ankle practice—makes a compelling case for its routine use.
The Bottom Line on Bunion (Hallux Valgus) Surgery Outcomes
AOFAS and VAS remain the most commonly reported measures after bunion surgery, but for a truly patient-centred assessment, MOXFQ looks the better fit. If you’re preparing for hallux valgus correction, ask about MOXFQ being part of your outcome tracking. It can help ensure we are measuring what matters: pain relief, comfortable footwear, and confident movement.
Sources and Further Reading
Arch Orthop Trauma Surg. 2024 Nov;144(11):4745-4752. doi: 10.1007/s00402-024-05523-y. PubMed: 39249134. PMC: PMC11582207.
Arch Orthop Trauma Surg. 2024 Nov;144(11):4745-4752. doi: 10.1007/s00402-024-05523-y. Epub 2024 Sep 9.
ABSTRACT
INTRODUCTION: In recent years, there has been an increasing demand for patient-reported outcome measures (PROMs) to assess the outcome following orthopedic surgery. But, we are lacking a standard set of PROMs to assess the outcome of hallux valgus surgery. The aim of this study was to analyze the chosen patient rated outcome scores used in studies reporting on hallux valgus surgery.
MATERIALS AND METHODS: The study was based on a previously published living systematic review. Included were prospective, comparative studies of different surgical procedures or the same procedure for different degrees of deformity. Four common databases were searched for the last decade. Study selection, data extraction, and risk of bias assessment were made by two independent reviewers. Data assessed were the individual PROMs used to assess the outcome of hallux valgus surgery.
RESULTS: 46 studies (30 RCTs and 16 non-randomized prospective studies) met the inclusion criteria. The most commonly used clinical outcome measures were the AOFAS (55%) and the VAS (30%). No differences were found between frequency of the individual scores per the level of evidence or the type of osteotomy.
CONCLUSION: Based on a systematic literature review, the AOFAS and VAS are the most frequently used outcome tools in studies assessing the outcome following hallux valgus surgery. Based on the literature available, the MOXFQ is a more valid alternative.
LEVEL OF EVIDENCE: Level I; systematic review of prospective comparative (level II) and randomized controlled trials (level I).
PMID:39249134 | PMC:PMC11582207 | DOI:10.1007/s00402-024-05523-y
