This purpose of this study is to analyze the results of resection, reconstruction and functional results for malignant humeral lesions.

Thirty-five cases were eligible to this study. There were stages IB (3) , IIB (26) , and IIIB (6) . Resection type varied from extraarticular humeral resection (3) , intraarticular humeral resection (31) , to humeral segmental resection (1) . Reconstruction consisted of spacer arthroplasty (18) , shoulder fusion (4) , composite arthroplasty (8) , fibular graft (2) , intercalary reconstruction with autogenous recycled bone (1) , and tumor prosthesis (2).

138 months actual/continuous disease free survival rate for 16 osteosarcomas were 47/25%. Complications needed operation were local recurrence (4) , failure of distal fixation (1) . Overall functional score of the 35 cases was 24, spacer arthroplasty (23) , composite arthroplasty (25) and shoulder fusion (22) , respectively.

There were no functional difference among reconstructive options and shoulder fusion and arthroplasty. More biologic reconstructions such as living fibula or autogenous recycled bone are recommendable options for cases which nesessitate resection up to 3/4 of humerus.