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OBJECTIVES: To compare percentage of articular exposure of distal humerus between triceps-reflecting anconeus pedicle (TRAP) approach and olecranon osteotomy approach. MATERIAL AND METHODS: 10 fresh cadaveric elbows were randomly allocated into 2 groups. Group 1 (5 elbows) was assigned for olecranon osteotomy approach. Group 2 (5 elbows) was assigned for TRAP approach. After surgical exposures were done, the visible articular surface of distal humerus was painted with oil-based yellow color. Subsequently, all dissected elbows were disarticulated. The remaining invisible articular area was painted with oil-based blue color. A square mesh net was firmly wrapped around the painted articular surface. The number of squares was counted and calculated into percentage of articular exposure. Median was calculated and compared among both groups. RESULT: The olecranon osteotomy exposure group offers median of articular exposure at 57.69%. TRAP exposure group offers 47.45% with statistical significance in the difference between two approaches (Mann-Whitney U test, p = 0.028, 95% CI = 2.1 to 15.9) CONCLUSION: The olecranon osteotomy exposure offers more articular visualization compared with the TRAP approach with statistical significance.

Articular Exposure between Triceps Reflecting Anconeus Pedicle (TRAP) Approach and Olecranon Osteotomy Approach