Floating Toe Deformity: Causes After Hammertoe Surgery and Correction

Floating toe deformity — also called dorsal subluxation of the lesser toe or elevated toe deformity — is a condition where a toe fails to contact the ground during standing and walking, instead hovering above the floor surface. It occurs most commonly as a complication of Weil metatarsal osteotomy performed for metatarsalgia or hammertoe correction, but also arises from plantar plate insufficiency, intrinsic muscle weakness, and aggressive soft tissue release procedures. The toe appears normal in non-weight-bearing but lifts off the ground when the patient stands or walks, losing its ground contact function and creating asymmetric loading of adjacent toes and metatarsal heads. Understanding the causes and surgical correction options is critical for surgeons planning lesser toe reconstruction and for patients counseling about realistic outcomes of foot surgery.

Floating Toe: Causes and Contributing Factors

Cause	Mechanism	Typical Setting	Prevention
Weil metatarsal osteotomy — over-shortening	Metatarsal shortening disrupts intrinsic muscle-tendon unit length; flexor digitorum brevis and lumbricals become relatively lax and cannot maintain toe-ground contact	Most common cause — occurs when metatarsal is shortened more than 4-5mm in a single osteotomy; cumulative shortening with multiple corrections	Limit shortening to 3-4mm per osteotomy; convert to DMMO (minimally invasive metatarsal osteotomy) which carries lower floating toe rate; temporary K-wire to hold toe down 4-6 weeks
Plantar plate insufficiency	Plantar plate tear or chronic attenuation allows MTP joint extension; intrinsic muscle vectors shift dorsally; toe loses plantarward pressure	Crossover toe deformity; rheumatoid forefoot; chronic metatarsalgia with plantar plate progressive tear; prior MTP joint injection history	Repair plantar plate at time of osteotomy; assess plantar plate integrity preoperatively with MRI
Dorsal capsulotomy and extensor tenotomy over-release	Excessive soft tissue release around MTP joint during deformity correction removes stabilizing structures that maintain toe position; toe springs up with no restraint	Hammertoe correction with MTP release; aggressive soft tissue balancing; digital arthroplasty with over-release	Conservative capsular release; preserve intrinsic tendon insertions; K-wire to hold position post-op
Intrinsic muscle atrophy / neuropathy	Loss of intrinsic muscle function removes the flexor force at MTP level; extensor dominance lifts toe; no active plantarflexion of proximal phalanx	Diabetic neuropathy; Charcot-Marie-Tooth disease; other peripheral neuropathies; cavus foot	Address underlying neuropathy; forefoot orthotic to support toes; custom molded toe loops
Excessive resection in arthroplasty	Removal of too much bone at PIP resection arthroplasty shortens the digit and creates a floppy segment; shortened soft tissue envelope cannot maintain contact	Hammertoe arthroplasty with generous bone removal; revision procedures	Minimal bone resection philosophy; preserve 3-4mm of head; implant arthroplasty to maintain length

Floating Toe Treatment: Conservative and Surgical Options

Treatment	Indication	Technique	Success Rate
Toe loop orthotic splint	Mild floating toe; pain from adjacent toe overloading; patient not surgical candidate; temporary measure after surgery waiting for swelling resolution	Silicone loop around proximal phalanx attached to insole holds toe downward; custom-molded; worn in shoe	Adequate for symptom control in mild cases; does not correct deformity; requires continuous use
Flexor tendon transfer	Flexible floating toe (correctable to neutral with passive pressure); intrinsic deficit as primary cause; no fixed MTP subluxation	Flexor digitorum longus split into two slips rerouted to dorsal extensor hood; converts FDL from deforming force to correcting force at MTP; same principle as hammertoe flexor transfer	60-75% improved ground contact; best for neurological intrinsic weakness; less effective for post-osteotomy floating toe
Revision Weil osteotomy — elevation	Post-Weil floating toe; metatarsal shortened too much; plantar declination angle insufficient	Re-open osteotomy site; adjust metatarsal plantarward to restore intrinsic tendon tension; less common — technically demanding	Limited evidence; technically challenging; primary prevention is preferred
Metatarsal lengthening	Floating toe from significant metatarsal shortening; adjacent metatarsal overloading symptomatic	Callus distraction lengthening or allograft intercalary graft to lengthen short metatarsal; restore metatarsal parabola	Good results for restoring length and ground contact; technically demanding; lengthy recovery
MTP fusion	Severe floating toe; fixed MTP subluxation; failed prior procedures; patient preference for definitive solution	First or lesser MTP fusion in slight plantarflexion angle (5-10 degrees) to ensure toe contacts ground; most reliable for permanent ground contact	90%+ ground contact rate; permanent; eliminates MTP joint motion; toe stiffness accepted trade-off

At Balance Foot & Ankle in Howell and Bloomfield Hills, Weil osteotomy candidates are counseled preoperatively about floating toe risk — the surgical plan limits metatarsal shortening to 3-4mm and includes temporary K-wire fixation to maintain toe position during healing, reducing the post-Weil floating toe rate to under 10% compared to 20-30% without these precautions. Call (810) 206-1402.