Human lower limbs are naturally engineered to maintain a mechanical axis passing directly through the center of the hip, knee, and ankle joints. When this alignment is altered due to congenital conditions, adolescent growth anomalies, rickets, or malunited fractures, angular deformities such as Bowlegs (Genu Varum) or Knock Knees (Genu Valgum) occur. Beyond aesthetic concerns, untreated deformities create severe asymmetric joint overload, accelerating painful cartilage destruction.
Common Lower Limb Deformities
- Genu Varum (Bowlegs): The knees curve outward, shifting the mechanical weight axis inward and causing excessive compressive force on the medial knee compartment.
- Genu Valgum (Knock Knees): The knees angle inward and touch while the ankles remain separated, overloading the lateral joint compartment.
- Post-Traumatic Malunion: Improper healing of past fractures resulting in limb rotation, angulation, or limb-length discrepancy.
Why Realignment Surgery Protects Your Natural Joints
In young and active individuals, subjecting a misaligned knee to high mechanical stress causes the inner or outer cartilage to wear out prematurely by age 35 to 45. Realignment surgeries, such as High Tibial Osteotomy (HTO) and Distal Femoral Osteotomy (DFO), realign the limb’s mechanical weight-bearing axis toward the healthy, undamaged compartment. This redistributes load, relieves chronic joint pain, and delays or eliminates the need for artificial joint replacement by decades!
Modern Surgical Options
- High Tibial Osteotomy (HTO): A controlled wedge cut is made in the upper shin bone, opening or closing the angle under fluoroscopic measurement, followed by rigid fixation with anatomical locking plates.
- Guided Growth (Epiphysiodesis): In growing children with open growth plates, small tension band plates (8-plates) temporarily tether one side of the growth plate, allowing the opposite side to naturally straighten the leg over 6 to 12 months.
- Ilizarov & Hexapod External Fixators: Utilized for complex three-dimensional multi-apical deformities accompanied by limb shortening, allowing gradual millimeter-by-millimeter lengthening and angular correction.
Dr. Emad Ansari utilizes advanced long-leg mechanical axis full-length radiograph planning to deliver precise realignment, restoring both cosmetic confidence and long-term joint health.
Authored by Dr. Emad Ansari
MBBS, MS Ortho, FIJR — Consultant Orthopaedic, Joint Replacement & Trauma Surgeon, Bhiwandi, Maharashtra.
Providing evidence-based orthopedic care, minimally invasive trauma surgery, and comprehensive joint restoration across Maharashtra.
