Smith and nephew

Alignment of the prosthesis is one of the most significant factors that affect the long-term clinical outcome following total knee arthroplasty (TKA). There is conflicting evidence whether patient-specific instrumentation (PSI) for TKA improves the component position compared to standard instrumentation. This study aimed to compare the rotational alignment of the femoral and tibial components in TKA patients when performed with either conventional or PSI. Sixty patients with primary knee osteoarthritis were randomly divided into two groups treated surgically with TKA: one with conventional instrumentation and the other with the Visionaire PSI system (Smith and Nephew, Memphis, TN)...

This study was to report the comparison of outcomes between Ilizarov ring fixator (IRF) and Taylor Spatial Frame® (Smith & Nephew, Memphis, Tenn.; TSF) in terms of the effectiveness of ankle-foot deformities correction, follow-up results, and complications. Fourteen patients with ankle-foot deformities were corrected using circular external fixation (IRF group = 7 patients; TSF group = 7 patients) and related procedures. Baseline data and treatment variables were recorded. The patients' mean age was 42...

INTRODUCTION: The growing trends of total knee arthroplasty (TKA) foreshadow an inevitable increase in the financial burden on healthcare expenditure estimated to almost nine billion dollars annually. This study aims to demonstrate the potential savings when using all-polyethylene (AP) compared to metal-backed (MB) tibial components and describes the cost variability amongst three major commercially available implants. MATERIALS AND METHODS: The cost of AP versus MB implants was analyzed using a large nationwide database, Emergency Care Research Institute (ECRI)...

A new design of the so-called "guided-motion" total knee arthroplasty (TKA) is expected to produce normal-like kinematics. The implant behaves strictly as a mechanically constraint-guided motion system. However, no previous reports have demonstrated the most appropriate surgical technique or soft-tissue balance that would reproduce ideal kinematics. The purpose of this study was to clarify the relationship between soft-tissue balance and the intraoperative kinematics of guided-motion TKA. In this study, intraoperative kinematics of 95 patients whose TKA was performed with a guided-motion prosthesis (Journey II BCS Smith and Nephew) were measured using the computed tomography (CT)-free navigation system...

BACKGROUND: The long-term aesthetic appearance of scars is of great importance to patients. Biobrane (Smith and Nephew, Fort Worth, Texas), a biosynthetic skin dressing, is a successfully established dressing for the treatment of superficial wounds. A new silk barrier dressing (Dressilk; Prevor, Moulin de Verville, France) has also shown good results in wound healing. This study evaluated the long-term scar quality of superficial wounds treated with these dressings. METHODS: From February 2012 to May 2013, 11 patients with burns in need of skin grafting received donor site treatment...

Suture button-based femoral cortical suspension constructs of anterior cruciate ligament grafts can facilitate a fast and secure fixation. However, there are several case reports showing button malpositioning resulting from the inability to visualize the "flipped" button. Many current surgical techniques do not allow direct visualization of EndoButtons (Smith & Nephew, Andover, MA) in their final position, making it difficult to ensure that both buttons are fully flipped and that there is no soft-tissue interposition between the button and femur...

Anterior cruciate ligament injury is one of the most common ligament injuries of the knee in sports medicine. The treatment of choice is anterior cruciate ligament reconstruction, which requires an experienced surgeon. Complications may occur at every step of the procedure. The surgeon should be especially careful when performing the step of femoral tunnel creation. Damage to the medial femoral condyle (MFC) could occur; thus, the full functional outcome of the knee might be affected. There are many surgical techniques to avoid MFC injury...

PURPOSE: Cortical suspensory devices are routinely used for femoral side fixation of soft tissue graft in anterior cruciate ligament (ACL) reconstruction. The purpose of this study was to evaluate the biomechanical properties of a new adjustable loop device (GraftMax®) compared with established devices (EndoButton® and TightRope®) in ACL reconstruction and to investigate whether knotting the free end of TightRope could improve biomechanical properties. METHODS: The three cortical suspensory devices (GraftMax® Button; Conmed, EndoButton® CL; Smith & Nephew, and TightRope® RT; Arthrex) were tested under cyclic load (50-250 N for 1000 cycles) and pull-to-failure conditions at 50 mm/h in a device-only setup using a tensile testing machine...

BACKGROUND: Truly anatomic coracoclavicular ligament reconstruction (TACCR) according to the original insertions is a creative new method for the treatment of severe acromioclavicular separation. This research analyzed the clinical and radiologic results of TACCR in 25 patients with at least 2-year follow-up. METHODS: The study enrolled 25 patients with Rockwood type V acromioclavicular joint dislocations who underwent TACCR using 2 Endobutton (Smith & Nephew Inc...

The aim of this study was to analyze bone remodeling around the Nanos® (Smith & Nephew) and Metha® (Aesculap AG) implants as a function of varus/valgus stem positioning. In 75 patients with diagnosed coxarthrosis, either Nanos® (n= 51) or Metha® (n= 24) prostheses were implanted. Digital assessment of plain radiographs immediately, 97 days, and 381 days after THA showed no clinically-relevant migration, angulation, or change in offset and center of rotation. The DEXA scans showed significant BMD changes in Gruen zones 1 (-12...

RATIONALE: Although numerous reconstruction protocols have been reported for lower leg trauma, those for distal leg trauma remain few. We present the case of a woman with an implant exposure wound, who was successfully treated through fat grafting, without major flap surgery. PATIENT CONCERNS: An 83-year-old woman with an exposed implant in lower extremity received reconstruction surgery once and the surgery failed. She refused additional major surgery and negative pressure wound therapy...

BACKGROUND: Intra-articular Pilon fractures remain therapeutically challenging due to osteochondral fracturing and comminution, marginal impaction, and insult to the soft tissue envelope. The purpose of this study was to compare the efficacy of anterolateral distal tibial locking plates in capturing main fracture fragments in tibial plafond fractures. METHODS: From May 2011 to Dec 2015, 169 OTA C-type pilon fractures met inclusion and exclusion criteria with computed tomographic (CT) scans performed prior to definitive fixation...

BACKGROUND: A novel revision technique for failed hip resurfacings involves retention of the acetabular cup, if well-fixed, which is mated to dual-mobility (DM) prosthesis in a traditional hip replacement configuration. It is unknown whether existing damage on the retained cup will result in unacceptable wear of the DM prosthesis. METHODS: Thirty retrieved Birmingham (Smith & Nephew) monoblock cups were visually scored for damage features and area of coverage...

Pyoderma gangrenosum is a chronic non-infectious neutrophilic dermatosis that causes undermining ulcers. Topical therapies for the deep ulcers of pyoderma gangrenosum have not been established. To investigate whether negative-pressure wound therapy is effective for a pyoderma gangrenosum ulcer, we used the PICO single use negative-pressure wound therapy system (Smith & Nephew, London, UK) for two pyoderma gangrenosum patients. In these cases, the ulcers decreased in size and necrolytic tissue was removed notably...

BACKGROUND: Implant manufacturers proclaim that the tapers of modular total hip arthroplasty are not standardized and can vary from manufacturer to manufacturer. That is why the combination of various components from different manufacturers ("Mix and Match") is not permitted. In this study, different taper combinations were investigated experimentally to assess the effect of "Mix and Match" regarding the taper connection strength. METHODS: Torque-off tests using hip stems and metal femoral heads from 6 different implant manufacturers were performed...

BACKGROUND: Approximately 19% of morbidity in peripheral vascular surgery is attributable to wound complications, which can result in delayed healing, and also arterial or graft infection leading to limb loss and even mortality in extreme cases. AIM: To determine whether groin wound complications were reduced following the routine introduction of PICO negative pressure wound therapy dressings in patients who underwent peripheral vascular surgery. METHODS: Patients who underwent peripheral vascular surgery from 2011 to 2016 were identified and divided into PICO and non-PICO groups...

INTRODUCTION: Surgical instrumentation is now available to facilitate wound debridement. The 2 primary options involve different energy applications, but both have the potential to spray. The Versajet II (Smith & Nephew, London, UK) utilizes a high-powered water jet to disrupt tissue and remove debris by means of the Venturi effect. The SonicVac (Misonix, Farmingdale, NY) is a direct-contact, low-frequency ultrasound debriding device. It delivers a high-energy ultrasound to a wound surface via a fluid medium, causing bubble cavitation, a physical effect of rapid pressure waves causing bubbles to form and implode that releases mechanical energy...

BACKGROUND: Reducing polyethylene (PE) wear by increasing the cross-linking encouraged surgeons to hope for increased total knee arthroplasty (TKA) survival rates. Different methods of manufacturing cross-linked polyethylene (XLPE) were introduced, following promising in vitro results. Is there a measurable effect of cross-linking on TKA survival? METHODS: A registry study was conducted, focusing on fixed tibial inserts in primary TKA. Conventional PE represented 87% of the liners, 10% were cross-linked and 2% were antioxidant PE...

OBJECTIVE: Innovative skin substitutes and temporary wound dressings are frequently used in the treatment of superficial and partial-thickness wounds. The aim of this study was to compare 2 commonly used temporary skin dressings with a newly developed collagen matrix to determine changes in microcirculation as measured by blood flow, hemoglobin oxygenation, and relative hemoglobin values during healing of partial-thickness skin defects. METHODS: This animal study involved 28 adult male Lewis rats...

BACKGROUND: The purpose of this study was to evaluate the relationship between the preoperative knee deformity/kinematic pattern and the postoperative knee kinematic pattern in posterior cruciate ligament substituting (PS)-total knee arthroplasty (TKA). METHODS: This study involved 39 patients with medial osteoarthritis who underwent a primary PS-TKA using a computed-tomography-based navigation system. All the operations were performed by a single surgeon using a subvastus approach, modified gap technique and the same PS type of prosthesis (Genesis II™ total knee system, Smith & Nephew, Memphis, TN, USA)...