Dr. Allen has extensive experience and expertise in complex adult reconstruction procedures for deformity/scoliosis and tumors. He specializes in complex disorders of the upper cervical spine, including tumors and degenerative or post-traumatic conditions.Dr. Allen also performs minimally invasive surgical procedures for vertebral fractures, as well as XLIF or DLIF, which are lateral minimally invasive approaches for anterior lumbar interbody fusions for degenerative conditions, scoliosis and trauma.Dr. Allen has contributed to numerous peer-reviewed books and medical journals. He recently completed a book chapter for the American Academy of Orthopaedic Surgeons (AAOS) regarding minimally invasive treatment of vertebral fractures via kyphoplasty and vertebroplasty. It will be included in the upcoming book, Advanced Reconstructive Spine. He is also contributing a review and chapter on complications of occipitocervical fixation for the journal Seminars in Spine Surgery.Dr. Allen is known not only for his excellence as a spine surgeon, but for his personable bedside manner and caring communication skills with his patients and their loved ones.When he is not practicing medicine, Dr. Allen enjoys spending time with his family and participating in such sports as surfing, golf and basketball.