Malunion is when a fractured bone heals in an incorrect position -- with angular deformity, rotational malalignment, or shortening. Malunion differs from nonunion (failure to heal) in that the bone has healed, but in a suboptimal position. Walking cane need after malunion depends on what deformity resulted, which bone was involved, and whether the malunion causes functional impairment of gait.
Common Malunions Affecting Gait
- Femoral shaft malunion: rotational deformity (most common) causing in-toeing or out-toeing; angular deformity causing leg length discrepancy or knee alignment change
- Tibial malunion: angular deformity (varus/valgus) creating asymmetric knee/ankle loading; rotational malunion causing foot progression angle abnormality
- Distal radius malunion: does not affect gait but may affect cane grip comfort
- Calcaneal malunion: heel widening, subtalar joint restriction, or heel valgus -- causes painful gait pattern
- Ankle malunion: fibular shortening or rotational malunion leads to mortise incongruity and tibiotalar OA risk
Walking Cane for Malunion: By Bone and Deformity
| Malunion Location | Common Deformity | Cane Indication |
|---|---|---|
| Femoral shaft | Rotation, LLD, angular | If LLD greater than 2cm or antalgic gait; cane contralateral |
| Tibial shaft | Varus/valgus, rotation | If significant varus/valgus causing knee pain; cane contralateral |
| Calcaneus | Heel widening, valgus, subtalar restriction | Cane contralateral if painful antalgic heel gait |
| Ankle (fibula) | Mortise incongruity, rotation | Cane if post-traumatic ankle OA pain; contralateral |
Malunion vs Corrective Osteotomy
For symptomatic malunion causing significant gait impairment, corrective osteotomy (surgical re-fracture and realignment) may be indicated. This is the definitive treatment. Post-osteotomy, the patient returns to protected weight-bearing with a walking cane -- essentially restarting a fracture recovery protocol. The cane is then used for 6-12 weeks depending on the bone and osteotomy type.
Leg Length Discrepancy From Malunion
Femoral or tibial malunion with shortening (greater than 1.5-2cm) creates limb length discrepancy. A walking cane reduces the compensatory gait mechanisms (vaulting on the long side, hip circumduction on the short side) that develop to accommodate LLD. A shoe raise may be the primary intervention, with a cane as a supplementary measure.
Explore DaiWalk walking canes. Related: Walking Cane for Limb Length Discrepancy | Walking Cane for Knee Valgus and Varus.
