Blount's disease - an up-to-date insight with contemporary treatment guidelines deduced from critical analysis of a large 146 surgical case series

摘要

To elucidate an up-to-date insight and derive clear treatment guidelines for Blount's disease deduced from critical analysis of 146 surgical case series. Cases were presented and analyzed separately under its two basic clinical groups and the author further derived four subcategories under each of these two groups; the first basic group was the early onset clinical variant; infantile tibia vara (ITV) included 56 cases. The second group was the late onset clinical variant; late onset tibia vara (LOTV) included 90 cases. Different operative procedures used for treatment of these cases were proximal tibial osteotomy (PTO), temporary eight-plate proximal lateral tibial hemiepiphyseodesis (PLTH), or medial plateau elevation either on a monomodal or multimodal line of treatment. After a mean follow-up period of similar to 5 (2-12) years, the results were critically analyzed using case series descriptive analysis. In ITV variant, both PTO and temporary eight-plate PLTH monomodal line of treatment gave satisfactory results for de-novo (stages I, II, and III) subcategory while multimodal line of treatment was needed for achieving satisfactory results for neglected (stages IV, V, and VI) and relapsed subcategories. For LOTV variant, PTO monomodal line of treatment gave satisfactory results when applied for treatment of its de-novo subcategory. The derived treatment guidelines for Blount's disease can be of value for recruiting the most suitable treatment modality for each case entity of the disease, leading to satisfactory outcome with prevention of recurrence.