Symptoms of Plantar Plate Injury
Plantar plate injuries typically present with gradual onset forefoot pain, localized edema at the affected metatarsal head (most commonly the second), and metatarsophalangeal (MTP) joint instability demonstrated by a positive drawer sign.
Core Clinical Presentation
The symptom complex is highly characteristic when properly assessed 1:
- Pain pattern: Gradual onset (93% sensitivity) of chronic pain localized to the plantar aspect of the metatarsal head, worsening with weight-bearing 1, 2
- Localized edema: Swelling at the affected metatarsal head (95.8% sensitivity), creating visible fullness on examination 1
- Joint instability: Positive drawer sign (80.6% sensitivity, 99.8% specificity) - the most specific physical finding for plantar plate pathology 1
Progressive Deformity
As the condition advances, structural changes become apparent:
- Toe deviation: Development of "crossover toe" deformity, where the affected toe (typically second) drifts medially over the hallux 2, 3
- Dorsal contracture: The toe assumes a dorsally contracted position at the MTP joint 2
- Multiplane deformity: Combined sagittal and transverse plane malalignment develops with chronic untreated tears 4, 3
Key Physical Examination Findings
Pain with MTP joint range of motion is nearly universal (98% sensitivity for pain at the second metatarsal head) 1. The drawer test remains the cornerstone examination maneuver - dorsal translation of the proximal phalanx relative to the metatarsal head indicates plantar plate disruption 5, 1.
Additional examination findings include:
- Toe purchase test abnormality (inability to grip the ground with the affected toe)
- Kelikian push-up test positivity (toe elevation when pressing on metatarsal head)
- Palpable tenderness directly over the plantar plate insertion 5
Clinical Context
History of previous first ray surgery has 100% sensitivity for subsequent plantar plate injury, reflecting altered biomechanics 1. Previous corticosteroid injections into the MTP joint also increase risk 1.
Common Pitfall
The second MTP joint is affected in the vast majority of cases 4, 6. Do not dismiss forefoot pain as simple metatarsalgia - the combination of gradual onset pain, plantar edema, and positive drawer sign should immediately raise suspicion for plantar plate pathology. The condition is frequently underdiagnosed due to symptom overlap with Morton's neuroma and synovitis 5, 6, but the specific triad of symptoms described above distinguishes plantar plate injury when systematically assessed.
Untreated plantar plate instability progresses to irreversible hammer toe and mallet toe deformities 4, making early recognition based on these clinical symptoms essential for preventing permanent structural damage.