Report summary

For University of Pennsylvania Department of Orthopaedic Surgery in 2021-2023, the graph shows 45 visible PIs and 68 internal PI collaborations. The main research signal is Medicine as the leading field (56% of slots across 41 PIs; 41 labels), Surgery as the leading subfield (21% of slots across 25 PIs; 25 labels), and Spine and Intervertebral Disc Pathology as the leading topic (4% of slots across 6 PIs; 6 labels). That is a healthy pattern, with enough links to reveal several interpretable groups rather than one undifferentiated component. The most prominent PIs by weighted works are Robert L. Mauck (17.6 weighted works; Osteoarthritis Treatment and Mechanisms, Knee injuries and reconstruction techniques); Stephen J. Kovach (17.4 weighted works; Reconstructive Surgery and Microvascular Techniques, Bone fractures and treatments). The clearest collaboration lines are Stephen J. Kovach and L. Scott Levin (14 shared works, weight 5.9); John D. Kelly and Robert L. Parisien (8 shared works, weight 5.3). The strongest breakdown groups are group 1 with 10 PIs, 11 internal connections, weight 23.9, around Surgery, Rheumatology, Pathology and Forensic Medicine, led by Robert L. Mauck, Michael W. Hast, Ling Qin.