Latest journal articles about hip arthroplasty and reconstruction from Journal of Arthroplasty, The Bone & Joint Journal, Journal of Bone and Joint Surgery, Clinical Orthopaedics and Related Research, Acta Orthopaedica, Orthopedic Clinics of North, America, Journal of Orthopaedic Surgery and Research, Orthopedics

Related Articles The Value of Valgus Stress Radiographs in the Workup for Medial Unicompartmental Arthritis. Clin Orthop Relat Res. 2013 Aug 6; Authors: Waldstein W, Monsef JB, Buckup J, Boettner F Abstract BACKGROUND: High tibial osteotomy and unicompartmental knee arthroplasty are surgical treatment options for unicompartmental knee arthritis; these procedures are indicated for patients who do not have severe arthritis in the lateral compartment. Valgus stress radiographs sometimes are used to make this evaluation, but this test has not been critically evaluated. QUESTIONS/PURPOSES: We sought to determine (1) whether valgus stress radiographs help to evaluate the integrity of the cartilage in the lateral compartment in patients undergoing TKA for noninflammatory arthritis, and (2) whether valgus stress radiographs can identify patients whose varus deformity is correctable. METHODS: We reviewed preoperative hip-to-ankle standing radiographs, AP standing radiographs, and valgus stress radiographs of 84 patients (91 knees) who underwent TKA for varus knee arthritis between July 2010 and January 2012. Valgus stress radiographs were obtained with the patient supine with the knee 20° flexed and a firm manual valgus force was applied through the knee. On valgus stress radiographs, the lateral compartment joint space width and the corrected mechanical alignment were measured. Intraoperative cartilage assessment (Outerbridge grade) was compared with

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Related Articles Reply to the Letter to the Editor: Hip Resurfacing Does Not Improve Proprioception Compared With THA. Clin Orthop Relat Res. 2013 Aug 6; Authors: Larkin BJ, Nyazee H, Motley J, Nunley RM, Clohisy JC, Barrack RL PMID: 23917992 [PubMed - as supplied by publisher]Read more... http://www.ncbi.nlm.nih.gov/pubmed/23917992?dopt=Abstract

Related Articles Trends in Hip Arthroscopy Utilization in the United States. J Arthroplasty. 2013 Jul 31; Authors: Bozic KJ, Chan V, Valone FH, Feeley BT, Vail TP Abstract INTRODUCTION: The purpose of this study was to evaluate the changing incidence of hip arthroscopy procedures among newly trained surgeons in the United States, the indications for hip arthroscopy, and the reported rate of post-operative complications. METHODS: The ABOS database was used to evaluate the annual incidence of hip arthroscopy procedures between 2006-2010. Procedures were categorized by indication and type of procedure. The rate of surgical complications was calculated and compared between the published literature and hip arthroscopy procedures performed for femoroacetabular impingement (FAI)/osteoarthritis (OA) and for labral tears among the newly trained surgeon cohort taking the ABOS Part II Board exam. RESULTS: The overall incidence of hip arthroscopy procedures performed by ABOS Part II examinees increased by over 600% during the 5-year period under study from approximately 83 in 2006 to 636 in 2010. The incidence of hip arthroscopy for FAI/OA increased steadily over the time period under study, while the incidence of hip arthroscopy for labral tears was variable over time. The rate of surgical complications was 5.9% for hip arthroscopy procedures for a diagnosis of FAI/OA vs. 4.4% for a diagnosis of labral tear (P=0.36).

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Related Articles Letter to the Editor: Hip Resurfacing Does Not Improve Proprioception Compared With THA. Clin Orthop Relat Res. 2013 Aug 3; Authors: Girard J PMID: 23913340 [PubMed - as supplied by publisher]Read more... http://www.ncbi.nlm.nih.gov/pubmed/23913340?dopt=Abstract

Related Articles Do Monoblock Cups Improve Survivorship, Decrease Wear, or Reduce Osteolysis in Uncemented Total Hip Arthroplasty? Clin Orthop Relat Res. 2013 Aug 3; Authors: Halma JJ, Vogely HC, Dhert WJ, Van Gaalen SM, de Gast A Abstract BACKGROUND: Monoblock acetabular components used in uncemented total hip arthroplasty (THA) have certain mechanical characteristics that potentially reduce acetabular osteolysis and polyethylene wear. However, the degree to which they achieve this goal is not well documented. QUESTIONS/PURPOSES: The purpose of this study was to use a systematic review of controlled trials to test the hypothesis that monoblock cups have superior (1) polyethylene wear rate; (2) frequency of cup migration; (3) frequency of acetabular osteolysis; and (4) frequency of aseptic loosening compared with modular components used in uncemented THA. METHODS: A systematic search was conducted in the Medline, Embase, and Cochrane electronic databases to assemble all controlled trials comparing monoblock with modular uncemented acetabular components in primary THA. Included studies were considered "best evidence" if the quality score was either ≥ 50% on the Cochrane Back Review Group checklist or ≥ 75% the Newcastle-Ottawa quality assessment scale. A total of seven publications met our inclusion criteria.

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Related Articles Is Increased Modularity Associated With Increased Fretting and Corrosion Damage in Metal-On-Metal Total Hip Arthroplasty Devices?: A Retrieval Study. J Arthroplasty. 2013 Aug 1; Authors: Higgs GB, Hanzlik JA, Macdonald DW, Gilbert JL, Rimnac CM, Kurtz SM, the Implant Research Center Writing Committee Abstract This retrieval study documents taper damage at modular interfaces in retrieved MOM THA systems and investigates if increased modularity is associated with increased fretting and corrosion. One hundred thirty-four (134) heads and 60 stems (41 modular necks) of 8 different bearing designs (5 manufacturers) were analyzed. Damage at the shell-liner interface of 18 modular CoCr acetabular liners and the corresponding 11 acetabular shells was also evaluated. The results of this study support the hypothesis that fretting and corrosion damage occurs at a variety of modular component interfaces in contemporary MOM THAs. We also found that modularity of the femoral stem was associated with increased damage at the head. An analysis of component and patient variables revealed that dissimilar alloy pairing, larger head sizes, increased medio-lateral offsets and longer neck moment arms were all associated with increased taper damage at the modular interfaces. PMID: 23910820 [PubMed - as supplied by publisher]Read more... http://www.ncbi.nlm.nih.gov/pubmed/23910820?dopt=Abstract