Medicine and Health Sciences Commons^™

Biomechanical Investigation Of A Novel Ratcheting Arthrodesis Nail, Jeremy Mccormick, Xinning Li, Douglas Weiss, Kristen Billiar, John Wixted

Kristen L. Billiar

BACKGROUND: Knee or tibiotalocalcaneal arthrodesis is a salvage procedure, often with unacceptable rates of nonunion. Basic science of fracture healing suggests that compression across a fusion site may decrease nonunion. A novel ratcheting arthrodesis nail designed to improve dynamic compression is mechanically tested in comparison to existing nails. METHODS: A novel ratcheting nail was designed and mechanically tested in comparison to a solid nail and a threaded nail using sawbones models (Pacific Research Laboratories, Inc.). Intramedullary nails (IM) were implanted with a load cell (Futek LTH 500) between fusion surfaces. Constructs were then placed into a servo-hydraulic test frame (Model …

The Fate Of Spacers In The Treatment Of Periprosthetic Joint Infection., Miguel M Gomez, Timothy L Tan, Jorge Manrique, Gregory K Deirmengian, Javad Parvizi Md

Rothman Institute Faculty Papers

BACKGROUND: Two-stage exchange arthroplasty remains the preferred method to treat periprosthetic joint infection. The aim of this study was to investigate the clinical course of periprosthetic joint infection following resection arthroplasty and insertion of a spacer.

METHODS: Our institutional database was used to identify 504 cases of periprosthetic joint infection (326 knees and 178 hips) treated with resection arthroplasty and spacer insertion as part of a two-stage exchange arthroplasty. A review of the patient charts was performed to extract information relevant to the objectives of this study that included the details of the clinical course following resection arthroplasty.

RESULTS: The …

Management Of Complications Of Wrist Arthroplasty And Wrist Fusion., Michael P. Gaspar, Patrick M Kane, Eon K. Shin

Department of Orthopaedic Surgery Faculty Papers

The human wrist joint is unique from functional and anatomic standpoints. Numerous articulations exist within the wrist that allow for many options for partial wrist fusion and arthroplasty. In cases of pancarpal disease, fusion or arthroplasty of the entire wrist joint can be performed. Because of the high functional demand of the wrist, many of these surgical options can fail, leading to devastating complications. This article addresses the types of fusions and arthroplasties available for the wrist and discusses the potential complications associated with each. Methods to prevent these complications are presented and those to treat them once they have …

Use Of Circular External Fixation For Combined Subtalar Joint Fusion And Ankle Distraction., Thomas Zgonis, John Stapleton, Thomas S Roukis

John J Stapleton DPM, FACFAS

The authors discuss a novel technique not previously published that incorporates a subtalar joint arthrodesis with an ankle joint arthrodiastasis as an alternative to a tibiotalocalcaneal arthrodesis. Young and active patients who experience refractory pain and stiffness to the rearfoot and ankle secondary to combined severe subtalar and ankle arthrosis are suitable candidates for this surgical procedure. This new approach is based on sound principles in the treatment of severe arthrosis affecting the ankle and subtalar joint. The authors are currently prospectively reviewing their surgical experience with this procedure and believe that it provides an alternative option for the patient, …

Internal And External Fixation Approaches To The Surgical Management Of Calcaneal Fractures., John Stapleton, Gennady Kolodenker, Thomas Zgonis

John J Stapleton DPM, FACFAS

Calcaneal fractures are one of the most difficult fractures to surgically manage and often require a steep learning curve to achieve consistent results. They usually occur in young individuals with labor intensive occupations and are associated with major complications. Conservative treatment of intraarticular calcaneal fractures with displacement often results in significant deformity, bone loss, and posttraumatic arthrosis. Optimally, an open approach is required in most cases to achieve anatomic reduction and successful long-term outcomes.

Diabetic Lisfranc Fracture-Dislocations And Charcot Neuroarthropathy., Bradley A Levitt, John Stapleton, Thomas Zgonis

John J Stapleton DPM, FACFAS

The goal with Lisfranc fracture-dislocations is to regain joint congruity and reestablish midfoot stability to avoid debilitating posttraumatic arthrosis and chronic pain in the sensate patient. In the diabetic population, dense peripheral neuropathy and/or vascular disease are equally important and may alter the surgical approach to traumatic tarsometatarsal injuries. The initial diagnosis in the diabetic population may be delayed due to subtle radiographic findings and/or patient unawareness of trauma in the insensate foot. Failure to initiate treatment in the early stages of acute diabetic neuropathic Lisfranc injuries can predispose the patient to midfoot instability, potential ulceration, infection, and Charcot neuroarthropathy.

Combined Lateral Column Arthrodesis, Medial Plantar Arteryflap, And Circular External Fixation For Charcot Midfoot Collapse With Chronic Plantar Ulceration., Thomas Zgonis, Thomas S Roukis, John Stapleton, Douglas T Cromack

John J Stapleton DPM, FACFAS

No abstract provided.

Salvage Of The First Ray With Concomitant Septic And Gouty Arthritis By Use Of A Bone Block Joint Distraction Arthrodesis And External Fixation., John Stapleton, Roberto H Rodriguez, Luke C Jeffries, Thomas Zgonis

John J Stapleton DPM, FACFAS

Gouty arthropathy about the first metatarsal-phalangeal joint with a superimposed deep infection poses a great challenge to the foot and ankle surgeon. The inflammatory nature of gout compromises the soft-tissue envelope and vasculature to the area. Acute gouty arthropathy is usually a contraindication to surgical intervention secondary to wound-healing complications and possible vasospasm leading to tissue necrosis. However, if deep infection is present this must be managed with adequate surgical débridement followed by delayed soft-tissue and osseous reconstruction to prevent amputation. The authors present an exceptional clinical manifestation of gouty arthropathy of the first metatarsal-phalangeal joint concomitant with deep abscess …

Combined Medial Displacement Calcaneal Osteotomy, Subtalar Joint Arthrodesis, And Ankle Arthrodiastasis For End-Stage Posterior Tibial Tendon Dysfunction., John Stapleton, Ronald Belczyk, Thomas Zgonis, Vasilios D Polyzois

John J Stapleton DPM, FACFAS

Combining an ankle arthrodiastasis with a medial displacement calcaneal osteotomy and a subtalar joint arthrodesis offers surgeons a joint-sparing procedure for young and active patients who have end-stage posterior tibial tendon dysfunction and ankle joint involvement. An isolated subtalar joint arthrodesis or triple arthrodesis combined with an ankle arthrodiastasis is an option that can be used in certain case scenarios. Delaying the need for a joint destructive procedure through an ankle arthrodiastasis, however, may have a great impact in the near future, as advancements are underway to improve the use of ankle endoprosthesis.

Concomitant Osteomyelitis And Avascular Necrosis Of The Talus Treated With Talectomy And Tibiocalcaneal Arthrodesis, John Stapleton, Thomas Zgonis

John J Stapleton DPM, FACFAS

The goal with Lisfranc fracture-dislocations is to regain joint congruity and reestablish midfoot stability to avoid debilitating posttraumatic arthrosis and chronic pain in the sensate patient. In the diabetic population, dense peripheral neuropathy and/or vascular disease are equally important and may alter the surgical approach to traumatic tarsometatarsal injuries. The initial diagnosis in the diabetic population may be delayed due to subtle radiographic findings and/or patient unawareness of trauma in the insensate foot. Failure to initiate treatment in the early stages of acute diabetic neuropathic Lisfranc injuries can predispose the patient to midfoot instability, potential ulceration, infection, and Charcot neuroarthropathy.