Lateral compartment arthroplasty of the knee.

Fourteen lateral compartment arthroplasties with an average follow-up period of 89 months revealed 11 excellent results. A review of the literature corroborates these follow-up results. In patients with valgus gonarthritis or traumatic deformity, lateral unicompartment replacement is recommended instead of high tibial osteotomy if the angulation is greater than 10 degrees.