An implantable bone support assembly includes a rigid supporting member, at least a biodegradable ring, and at least a locking part. The rigid supporting member has a first surface, a second surface opposite to the first surface, and at least a hole extending from the first surface to the second surface. The biodegradable ring is fixed in the hole and does not protrude from the first surface of the rigid supporting member. The locking part is inserted into the biodegradable ring from the first surface of the rigid supporting member and fastened with the biodegradable ring. When the locking part fastens with the biodegradable ring, the locking part is not in contact with the rigid supporting member.一種植入式骨支撐組件，其包括支撐剛體、至少一生物可分解套環以及至少一鎖固件。支撐剛體具有第一表面、相對第一表面的第二表面以及至少一從第一表面延伸至第二表面的孔洞。生物可分解套環固定於孔洞內，且不凸出於支撐剛體的第一表面。鎖固件從支撐剛體的第一表面插入於生物可分解套環中，並與生物可分解套環鎖固。當鎖固件與生物可分解套環鎖固時，鎖固件不接觸支撐剛體。
