Surgical Treatment for Perthes Disease

Mazloumi MDAssociated professorOrthopaedic surgeon

A 14-year-old boy who had Legg-Calve´-Perthes disease at age 8 years and was treated with nonoperative methods

Pathomechanical environment

• Structural instability• Femoroacetabular impingment• Articular incongruity (localized joint overload)• Abductor inefficiency (articular overload)• Combinations

Perthes deformities

Proximal femur ( spectrom and variabilities of deformities)

• Large and aspherical femoral head• High grater throchanter (over growth)• Short femoral neck• Head neck offset deformity• Varus neck- shaft angle• Osteochondral disease

Perthes deformities

Acetabulom ( spectrom and variabilities of deformities)

• Decreseade anterolateral and/or posterolateral femoral head coverage.

• Increased acetabular inclination.• Relative acetabular deficiency.• Variable acetabular version

Long term outcome of Legg-Calve-perthes at middle age

• Risk of sever OA and clinically poor outcome after 40-50 years of age irrespective of prior successful surgical treatment and good outcome at skeletal maturity

• Increased incidence of OA and THA in patients with a Stulberg class III / IV / V who were treated with conservative methods

Surgical approaches for treatment of sequelae of Perthes disease

Extraarticular methods Intertrochanteric valgus osteotomy 1- Valgus extension: best corrects limb deformity 2- Valgus flexion: may better correct anterior impingement Trochanteric transfer with relative neck lengthening To correct greater trochanteric abutment) Noncontainment acetabular procedures 1- Shelf acetabuloplasty 2- Chiari procedure

Intraarticular methods Osteochondroplasty of the head and neck (open or via arthroscopy) Note: residual dysplasia may also require treatment Femoral head reduction (central “downsizing”) Unproved method Excision of osteochondritis dissecans Labral repair

Proximal femoral varus osteotomy

Proximal femoral valgus osteotomy

Valgus osteotomy

Triple pelvic osteotomy

Triple ost.

Double-level osteotomy

Shelf acetabuloplasty

Chiari osteotomy

Greater trochanteric advancement

Biomechanical effect of coxa breva

Coxa breva

Neck lengthening

Morscher osteotomy

Morscher osteotomy

biomechanical effects of the surgical reconstruction

Femoral head reduction osteotomy (FHRO) technique ( Coxa magna )

Femoral head reduction osteotomy

Femoral head reduction osteotomy

periactabular osteotomy

Thank you