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Today's foot and ankle edition covers four open-access studies examining radiographic assessment techniques in pediatric foot deformities, midterm outcomes of large-caliber tendon allograft reconstruction for chronic Achilles ruptures, clinical outcomes of subtalar arthroereisis with or without spring ligament repair, and a clinical consensus statement on perioperative medication management in elective podiatric surgery.
OrthoDigest is a fully AI-generated daily podcast by Joint Venture Orthopaedics — from automated research discovery and manuscript selection to script writing, voice production, and multilingual translation. Every step of the pipeline is powered by artificial intelligence, making it one of the first fully autonomous medical podcasts. Each episode covers six open-access, peer-reviewed manuscripts on a rotating subspecialty schedule — hip, knee, shoulder & elbow, hand & wrist, foot & ankle, spine, trauma, sports medicine, pediatrics, and oncology. Every study discussed is freely available, with links in the episode notes. Whether you're a surgeon, resident, researcher, or allied health professional, OrthoDigest keeps you current in about 20 minutes a day.
Welcome to OrthoDigest, your daily podcast of orthopaedic literature summaries, brought to you by Joint Venture Orthopaedics. Today is Thursday, so we are covering foot and ankle. We have four open-access studies for you today, spanning pediatric foot deformity assessment, Achilles tendon reconstruction, flatfoot surgery, and perioperative medication management. As always, links to every manuscript are in the episode description — all are open access. Let's get started.
Our first study is a retrospective cross-sectional study by Kim and colleagues, published in BMC Musculoskeletal Disorders. This research addresses a fundamental question in pediatric foot and ankle care: how well do our standard radiographic measurements actually correlate with functional loading patterns in children with foot deformities?
The authors retrospectively analyzed sixty-four pediatric patients with hindfoot varus or valgus deformities who underwent both weight-bearing radiographs and pedobarographic testing between two thousand seventeen and two thousand twenty-four. The cohort was evenly split with thirty-two patients in each deformity group. They measured radiographic variables including anteroposterior talo-first metatarsal angle, anteroposterior talo-second metatarsal angle, lateral talo-first metatarsal angle, and naviculocuboid overlap. These measurements were then correlated with pedobarographic outcomes across the forefoot, midfoot, and hindfoot regions.
The key finding was that both anteroposterior talo-first metatarsal and anteroposterior talo-second metatarsal angles correlated significantly with total foot surface area and midfoot loading indices. Particularly noteworthy, the anteroposterior talo-second metatarsal angle demonstrated comparable functional associations to the traditional anteroposterior talo-first metatarsal angle, with larger discriminative effect sizes between hindfoot varus and valgus groups. Age-adjusted partial correlations showed p-values less than zero point zero zero one for group differences. All radiographic parameters demonstrated excellent interobserver reliability with intraclass correlation coefficients ranging from zero point eight seven two to zero point nine nine six.
So what can you do differently? This data suggests considering the anteroposterior talo-second metatarsal angle as a complementary measurement when evaluating pediatric foot deformities. While the traditional anteroposterior talo-first metatarsal angle remains the standard, adding the second metatarsal measurement may provide additional insight into functional loading patterns, particularly when distinguishing between varus and valgus deformities.
As with any retrospective cross-sectional study, the usual caveats around selection bias apply, though the authors note that further validation in broader cohorts and predefined subgroups is needed.
Moving to Achilles tendon pathology, our second study is a retrospective case series by Chu and colleagues from the Orthopaedic Journal of Sports Medicine. This work examines midterm outcomes of large-caliber tendon allograft reconstruction for chronic Achilles tendon ruptures with large defects.
The authors analyzed thirty-two patients treated between October two thousand seven and August two thousand twenty-one by a single surgeon using fresh-frozen large-caliber tendon allografts. The cohort included eighteen women and fourteen men with a mean age of fifty-seven point six years. All patients had chronic Achilles ruptures with large defects, defined as a mean ruptured gap of five point eight centimeters ranging from five to ten centimeters. Mean follow-up was eight point four years, ranging from three to nearly seventeen years.
Clinical outcomes were assessed using multiple validated instruments. Mean preoperative American Orthopaedic Foot and Ankle Society ankle-hindfoot scores improved from sixty-four point eight plus or minus ten point nine to ninety-one point five plus or minus nine point three at six months postoperatively, and further improved to ninety-five point six plus or minus three point seven at twelve months. Visual analog scale pain scores decreased from six point three plus or minus zero point nine preoperatively to two point zero plus or minus zero point eight at six months and one point eight plus or minus zero point nine at twelve months. Achilles Tendon Total Rupture Scores increased from forty-nine point nine plus or minus twelve point six preoperatively to ninety-four point four plus or minus ten point six at six months and ninety-seven point eight plus or minus five point five at twelve months. All improvements showed p-values less than zero point zero zero one.
Importantly, no reruptures occurred in this series, and only three complications were reported overall. Among the eleven patients who underwent screw fixation, no nonunion was observed.
So what can you do differently? When facing chronic Achilles ruptures with large defects greater than five centimeters, this data supports considering fresh-frozen allograft reconstruction. The procedure offers advantages including the ability to reconstruct larger defects, shorter surgical times, avoidance of donor site morbidity, and provision of adequate tendon strength and length.
The authors acknowledge several important limitations. First, this is a retrospective case series from a single surgeon's experience, which may limit generalizability and introduce selection bias. Second, while this represents one of the largest cohorts on large-gap Achilles reconstructions, the sample size remains relatively small, particularly for patients undergoing reconstruction with patellar tendon and quadriceps tendon allografts. Third, outcome assessments primarily relied on subjective scoring systems, and additional objective biomechanical evaluations would strengthen the findings.
Staying with surgical outcomes, our third study is a retrospective analysis by Xin and colleagues from BMC Musculoskeletal Disorders examining clinical outcomes of subtalar arthroereisis in pediatric flatfoot with or without spring ligament repair.
The authors analyzed fifty-eight pediatric flatfoot patients treated between January two thousand eighteen and February two thousand twenty-three, comparing outcomes between subtalar arthroereisis alone versus combined with spring ligament repair. They assessed visual analog scale scores, American Orthopaedic Foot and Ankle Society midfoot scores, patient-reported satisfaction, and radiographic measurements including Meary angle, pitch angle, and talonavicular coverage angle.
Both treatment groups demonstrated significant clinical improvements. Pain scores as measured by visual analog scale improved to zero point one two plus or minus zero point three three in the subtalar arthroereisis alone group versus zero point two eight plus or minus zero point four six in the combined group, with p-values less than zero point zero zero one for both. American Orthopaedic Foot and Ankle Society scores increased to ninety-five point nine one plus or minus three point zero two and ninety-four point eight four plus or minus four point six eight respectively, again with p-values less than zero point zero zero one. Patient satisfaction rates were seventy-eight point eight percent for subtalar arthroereisis alone and seventy-six percent for the combined procedure.
However, the combined procedure demonstrated superior radiographic correction. All radiographic angles showed significantly greater improvements in the combined group, with p-values less than zero point zero five for all measurements. The authors found that while both interventions resulted in clinically meaningful improvements in pain relief and functional outcomes, the radiographic analysis demonstrated that the combined procedure provided superior corrective efficacy.
So what can you do differently? When treating pediatric flatfoot deformity, this data suggests considering the addition of spring ligament repair to subtalar arthroereisis when seeking maximal radiographic correction. While both procedures provide excellent clinical outcomes, the superior imaging improvements with the combined approach may offer greater long-term clinical benefits, though this remains to be proven with longer follow-up studies.
As with any retrospective analysis, inherent limitations around selection bias and confounding variables apply.
Our final study shifts focus to perioperative care. This is a clinical consensus statement by Tang and colleagues from the Journal of Foot and Ankle Research, addressing perioperative management of prothrombotic agents, antiplatelets, anticoagulants, and disease-modifying antirheumatic drugs in elective podiatric surgery.
A five-member panel conducted a comprehensive literature review to assess available data and identify evidence gaps in this clinically relevant area. Using a modified Delphi method, they formulated nineteen questions grouped within four key areas. These questions were then presented to delegates at the two thousand twenty-two Faculty of Podiatric Surgery Conference to develop consensus recommendations.
The panel developed clinical consensus recommendations for perioperative management across all four medication categories. The nineteen questions and their corresponding recommendations are summarized in the paper's appendix, with the strength of each recommendation highlighted. Rather than providing definitive guidelines, the statement offers valuable interim guidance for elective foot surgery based on available evidence and current practice patterns.
So what can you do differently? This consensus provides practical interim guidance for managing complex medication decisions in foot and ankle surgery. When encountering patients on anticoagulants, antiplatelets, or immunosuppressive therapies, the nineteen consensus recommendations can help inform your perioperative planning. However, these should complement, not replace, your institution's existing protocols and guidelines.
The authors acknowledge important limitations. More high-level evidence is needed to inform decision-making in this area, and the consensus does not replace local trust policies and guidelines. The statement represents current practice patterns rather than evidence-based mandates.
And that wraps up today's edition of OrthoDigest. We covered radiographic assessment in pediatric foot deformities, allograft reconstruction for large Achilles defects, subtalar arthroereisis outcomes, and perioperative medication management consensus. As always, links to all manuscripts are in the episode description — they are all open access, so please do take a look. Thanks for listening, and we will see you tomorrow for hand.