Publications by authors named "Peter J Emans"
Article Synopsis
- The objective of the study was to analyze calcium-containing crystals in synovial fluid from knee osteoarthritis patients using Raman spectroscopy and assess the effects of calcite crystals on biological responses.
- The research involved collecting synovial fluid samples from 32 patients, identifying various crystals, and examining the immune responses of different cells exposed to calcite crystals.
- Findings revealed calcite crystals in the majority of samples, with distinct pro-inflammatory responses observed in immune cells and other joint cells, suggesting that understanding these crystals could lead to new treatment strategies for osteoarthritis.
Currently available focal knee resurfacing implants (FKRIs) are fully or partially composed of metals, which show a large disparity in elastic modulus relative to bone and cartilage tissue. Although titanium is known for its excellent osseointegration, the application in FKRIs can lead to potential stress-shielding and metal implants can cause degeneration of the opposing articulating cartilage due to the high resulting contact stresses. Furthermore, metal implants do not allow for follow-up using magnetic resonance imaging (MRI).
View Article and Find Full Text PDFGoats or sheep are the preferred animal model for the preclinical evaluation of cartilage repair techniques due to the similarity of the goat stifle joint to the human knee. The medial femoral condyle of the stifle joint is the preferred site for the assessment of articular cartilage repair, as this is the primary location for this type of lesion in the human knee. Proper surgical exposure of the medial femoral condyle is paramount to obtain reproducible results without surgical error.
View Article and Find Full Text PDFObjective: The main purpose of the present study was to assess the risk for major revision surgery after perichondrium transplantation (PT) at a minimum of 22 years postoperatively and to evaluate the influence of patient characteristics.
Design: Primary outcome was treatment success or failure. Failure of PT was defined as revision surgery in which the transplant was removed, such as (unicondylar) knee arthroplasty or patellectomy.
Background: Historically it has been suggested that noise-induced hearing loss (NIHL) affects approximately 50% of the orthopedic surgery personnel. This noise may be partially caused by the use of powered saw systems that are used to make the bone cuts. The first goal was to quantify and compare the noise emission of these different saw systems during total knee arthroplasty (TKA) surgery.
View Article and Find Full Text PDFBackground: Both the range of motion (ROM) technique and the tibial tubercle landmark (TTL) technique are frequently used to align the tibial component into proper rotational position during total knee arthroplasty (TKA). The aim of the study was to assess the intra-operative differences in tibial rotation position during computer-navigated primary TKA using either the TTL or ROM techniques. The ROM technique was hypothesized to be a repeatable method and to produce different tibial rotation positions compared to the TTL technique.
View Article and Find Full Text PDFArticle Synopsis
- Outpatient knee arthroscopy is a common procedure, but many patients experience chronic postsurgical pain (CPSP) and poor global surgical recovery (GSR) one year after surgery.
- A study of 104 patients showed that 32.7% experienced CPSP, and 50% had poor GSR at the one-year mark, with factors like preoperative pain and analgesic use increasing the risk for CPSP.
- Early recovery indicators, such as pain levels and quality of life just after surgery, are crucial for predicting long-term outcomes like CPSP and GSR.