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Flatfoot Reconstruction – Calcaneal Osteotomy & Lateral-Column Lengthening

When a collapsing arch progresses beyond what custom orthotics and physical therapy can hold, realignment surgery restores a balanced, plantigrade foot and halts the cascade toward arthritis. The cornerstone operations are:

  • Medialising Calcaneal Osteotomy (MCO) – slides the heel bone inward to realign the rear-foot.
  • Lateral-Column Lengthening (Evans / Zimmer) – lengthens the outer side of the foot to correct fore-foot abduction.

Frequently they’re combined with smaller “tune-up” osteotomies or tendon transfers to correct all three planes of deformity.

Who Is a Candidate?

Objective Findings Typical Symptoms
Stage II posterior-tibial tendon dysfunction (flexible flatfoot) Medial-arch ache after standing, “too-many-toes” sign
Hind-foot valgus > 10 ° and talo-navicular uncoverage on weight-bearing X-ray Inside-ankle pain, fatigued legs, shoe-wear frustration
Failure of 3–6 months of custom orthotics & PT Early lateral-ankle impingement, knee or hip strain

Rigid Stage III/IV flatfoot requires fusion, not realignment.

Surgical Building Blocks

Problem Corrective Move Key Fixation
Heel drifts outward (valgus) Medialising Calcaneal Osteotomy – cut heel bone, slide 8–12 mm medially 7 mm headless compression screw or low-profile plate
Fore-foot abducts (“too-many-toes”) Lateral-Column Lengthening (Evans) – 5–10 mm tricortical iliac crest graft or titanium wedge into anterior calcaneusLateral-Column Lengthening (Evans) – 5–10 mm tricortical iliac crest graft or titanium wedge into anterior calcaneus Two 3.5 mm screws or wedge cage
Fore-foot remains supinated after above Cotton (medial-cuneiform) opening-wedge osteotomy PEEK wedge or allograft
Weakened posterior-tibial tendon FDL tendon transfer to navicular Interference screw
Tight gastrocnemius drives pronation Gastrocnemius recession (Strayer) Endoscopic knife

Typical construct: MCO + Evans + Cotton ± FDL transfer.

Day-of-Surgery Snapshot

  • Regional popliteal + ankle blocks opioid-sparing analgesia.
  • Two 3-4 cm incisions – posterior heel (MCO) and lateral calcaneus (Evans).
  • Saw cut, slide, wedge graft → fluoroscopy confirms angles.
  • Screw/plate fixation; layered closure, waterproof dressings.
  • Splint in slight equinus; non-weight-bearing 6 weeks (MCO heals), then boot PWB → full WB at 8–10 weeks once X-ray shows bridging.

OR time: 90–120 minutes.

Outcomes & Evidence

Metric Data (systematic reviews, 2024)
Radiographic correction (talonavicular coverage) 25–35 % improvement
AOFAS score ↑ 45–50 points (pre-op → 24 mo)
Patient satisfaction 85–95 % good–excellent
Return to low-impact sport 4–6 months
Non-union (calcaneal cut) < 1 %
Graft collapse/revision (Evans) 3–5 % (mostly smokers / osteoporosis)

Post-Op Milestones

Phase Goals
0–6 wk NWB in posterior splint → cast; elevate to curb swelling
6–10 wk Transition to CAM boot, begin ankle ROM, continue NWB pool cardio
10–16 wk Full WB boot → stiff sneaker with custom orthotic; start theraband inversion/eversion
4 mo Single-leg calf raise, bike, elliptical
6 mo Jogging, court drills, hiking once hop-test ≥ 90 %

Benefits & Risks

Benefits Risks (mitigated)
Recreates arch, removes inside-ankle pain Temporary numbness at heel incision (< 5 %)
Preserves joint motion (no fusion) Hardware irritation (< 5 %) – low-profile plate, removable
Prevents progression to arthritis Over- or under-correction (rare with intra-op angles)
> 90 % return to normal shoes DVT – aspirin/LMWH prophylaxis during NWB

Our Reconstruction Philosophy

  • 3-plane blueprint We measure Meary’s angle, hind-foot valgus, talo-first-metatarsal coverage, then choose osteotomies that correct all planes.
  • Bone first, tendon second Realignment off-loads the posterior-tibial tendon; FDL transfer augments if tendon quality poor.
  • Early motion, protected load ROM starts at 6 weeks; progressive WB builds stronger bone graft incorporation.
  • Lifestyle integration Custom orthotics and calf-stretch homework keep correction durable.

Frequently Asked Questions

Usually yes—screws and plates are low-profile titanium; removal only if they irritate (≈ 3 %).

Modern graft wedges or allograft cages avoid hip harvest; if autograft used, pain resolves in 1–2 weeks.

Recurrence is < 5 % when angles are fully corrected and patient maintains calf flexibility and proper footwear.

Rebuild Your Arch—Regain Your Stride

If orthotics no longer tame a collapsing arch, calcaneal osteotomy and lateral-column lengthening can restore foot shape, strength, and comfort. Schedule a flatfoot-reconstruction consult with North Texas Podiatry Associates to map an imaging-guided, stage-matched plan.

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