Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 443 articles


What Are the Causes of Revision Total Knee Arthroplasty in Japan?

Yasuhiko Kasahara MD, PhD, Tokifumi Majima MD, PhD, Shoichi Kimura MD, PhD, Osamu Nishiike MD, Jun Uchida MD, PhD

There is limited information regarding the cause of revision TKA in Asia, especially Japan. Owing to differences in patient backgrounds and lifestyles, the modes of TKA failures in Asia may differ from those in Western countries.

Unloader Knee Braces for Osteoarthritis: Do Patients Actually Wear Them?

Emily Squyer MD, Daniel L. Stamper PA-C, Deven T. Hamilton PhD, Janice A. Sabin PhD, Seth S. Leopold MD

Unloader braces are a nonsurgical approach for predominantly unicompartmental knee arthritis. Although noninvasive, braces are expensive and it is unclear whether clinical factors, if any, will predict regular brace use.

Must Bilaterality Be Considered In Statistical Analyses of Total Knee Arthroplasty?

Young Gon Na MD, Yeon Gwi Kang MS, Moon Jong Chang MD, Chong Bum Chang MD, PhD, Tae Kyun Kim MD, PhD

In studies of TKA, treating each knee as an independent case in patients with bilateral TKAs can lead to errors, because patients with bilateral and unilateral TKAs may achieve different levels of function and because the assumption of statistical independence is violated.

Total Knee Arthroplasty in the Elderly: Does Age Affect Pain, Function or Complications?

John W. Kennedy BMSc (Hons), MBChB, Linda Johnston RGN, BN, MSc, Lynda Cochrane PhD, Petros J. Boscainos MD

TKA is one of the most commonly performed procedures in the elderly, yet whether age influences postoperative pain, function, and complication rates is not fully understood for this group. This is because the current literature has limited followup, small sample sizes, and no comparator group.

Tibia Vara Affects the Aspect Ratio of Tibial Resected Surface in Female Japanese Patients Undergoing TKA

Shigeshi Mori MD, Masao Akagi MD, PhD, Shigeki Asada MD, Tetsunao Matsushita MD, Kazuhiko Hashimoto MD

Tibia vara seen in Japanese patients reportedly influences the tibial component alignment when performing TKA. However, it is unclear whether tibia vara affects the component position and size selection.

Can A Modified Robert Jones Bandage After Knee Arthroplasty Reduce Blood Loss? A Prospective Randomized Controlled Trial

Piya Pinsornsak MD, Sukanis Chumchuen MD

A bulky compression dressing (Robert Jones bandage) is commonly used after TKA to reduce blood loss, pain, and swelling. However, it is unclear whether these dressings in fact reduce blood loss.

Proximal Tibial Bone Density Is Preserved After Unicompartmental Knee Arthroplasty

Bradley I. Richmond MBChB, Simon V. Hadlow MBChB, Tim G. Lynskey MBChB, Cameron G. Walker PhD, Jacob T. Munro MBChB

Bone mineral density (BMD) in the proximal tibia decreases after TKA and is believed to be a factor in implant migration and loosening. Unicompartmental knee arthroplasty (UKA) is a less invasive procedure preserving knee compartments unaffected by degeneration. Finite element studies have suggested UKA may preserve BMD and that implants of differing stiffnesses might differentially affect BMD but these notions have not been clinically confirmed.

Patellar Tracking and Anterior Knee Pain are Similar After Medial Parapatellar and Midvastus Approaches in Minimally Invasive TKA

Boonchna Pongcharoen MD, Thanasak Yakampor MD, Keerati Charoencholvanish MD

Since the medial parapatellar (MPP) approach in conventional TKA can cause patellar maltracking and anterior knee pain, some orthopaedic surgeons use the midvastus (MV) approach instead of the MPP approach to reduce patellar maltracking. Minimally invasive surgical (MIS) TKA has been developed to limit the damage to the surrounding muscle and reduce the necessity of patellar eversion during surgery. Thus, MIS TKA might be associated with proper patellar tracking and a low incidence of anterior knee pain. However, this presumption has not been confirmed.

Comparative Demographics, ROM, and Function After TKA in Chinese, Malays, and Indians

Wei Ming Siow MBBS, MRCS, Pak Lin Chin MBBS, FRCS, Shi Lu Chia MBBS, FRCS, Ngai Nung Lo MBBS, MRCS, Seng Jin Yeo MBBS, FRCS

There is marked racial disparity in TKA use rates, demographics, and outcomes between white and Afro-Caribbean Americans. Comparative studies of ethnicity in patients undergoing TKAs have been mostly in American populations with an underrepresentation of Asian groups. It is unclear whether these disparities exist in Chinese, Malays, and Indians.

Surgical Technique: Computer-assisted Sliding Medial Condylar Osteotomy to Achieve Gap Balance in Varus Knees During TKA

Arun B. Mullaji FRCS Ed, MCh Orth, MS Orth, Gautam M. Shetty MS Orth

Extensive posteromedial release to correct severe varus deformity during TKA may result in mediolateral or flexion instability and may require a constrained implant. We describe a technique combining computer navigation and medial condylar osteotomy in severe varus deformity to achieve a primary goal of ligament balance during TKA.