Effects of metaphyseal XXXX removal with preservation of the epiphysis and knee arthroplasty.

@entity1 @entity2 @entity5 @entity3478
In this study, the effects of surgical removal of @entity3478 with epiphysis preservation and knee arthroplasty were analyzed. A total of 15 @entity1 with @entity3478 were investigated. Six of these @entity1 underwent epiphyseal preservation surgery with preoperative physeal distraction, termed the physeal distraction (PD) group. Nine @entity1 underwent resection of the knee joint, combined with metal prosthesis transfer, termed the knee arthroplasty (KA) group. Tumor control, limb length discrepancy, range of movement (ROM) of the knee and functional outcome of lower limb [Musculoskeletal Tumor Society (MSTS) score and the Toronto extremity salvage score (TESS)] were assessed for these two groups. All 15 @entity1 were followed-up after the surgery. One @entity1 in the PD group was found to have @entity2 metastasis; however, no local @entity5 recurrence was found. In the KA group, local @entity5 recurrence was found in one @entity1 , and lung metastases were observed in two cases postoperatively. The limb length discrepancy in @entity1 of the PD group was 2.58  0.27 cm, which was significantly less compared with that in @entity1 in the KA group (4.01  0.13 cm; P<0.05). In addition, the lower limb knee ROM in @entity1 in the PD group was 127.70  14.63  , which was increased compared to that in @entity1 in the KA group (105.70  15.48  ; P<0.05). The mean MSTS score was 86.67% with a mean TESS of 82.33% in @entity1 from the PD group, which showed no significant difference compared with the respective scores for @entity1 in the KA group (P>0.05). Therefore, epiphyseal sparing limb-saving surgeries should be considered for the treatment of @entity3478 in @entity1 , when certain indications are satisfied.
