Johan Bellemans
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View article: The Coronal Plane Alignment of the Knee Classification
The Coronal Plane Alignment of the Knee Classification Open
» The coronal plane alignment of the knee (CPAK) classification is a practical and straightforward framework to define a patient’s constitutional coronal knee limb alignment and joint line obliquity. » Patients are assigned to one of nine …
View article: Coronal Plane Alignment Of The Knee (CPAK) Type III Valgus Knee Exhibits Lateral Pivot Motion During Squatting
Coronal Plane Alignment Of The Knee (CPAK) Type III Valgus Knee Exhibits Lateral Pivot Motion During Squatting Open
Medial pivoting motion has been identified as the primary kinematic pattern throughout flexion of the native knee joint. The recently introduced coronal plane alignment of the knee (CPAK) classification categorizes knees into nine alignmen…
View article: Windswept deformity of the knee: prevalence and predictive factors in osteoarthritic and healthy populations
Windswept deformity of the knee: prevalence and predictive factors in osteoarthritic and healthy populations Open
Aims This study examined windswept deformity (WSD) of the knee, comparing prevalence and contributing factors in healthy and osteoarthritic (OA) cohorts. Methods A case-control radiological study was undertaken comparing 500 healthy knees …
View article: Cooled versus conventional radiofrequency treatment of the genicular nerves for chronic knee pain: 12-month and cost-effectiveness results from the multicenter COCOGEN trial
Cooled versus conventional radiofrequency treatment of the genicular nerves for chronic knee pain: 12-month and cost-effectiveness results from the multicenter COCOGEN trial Open
Background Radiofrequency (RF) treatment of the genicular nerves reduces chronic knee pain in patients with osteoarthritis (OA) or persistent postsurgical pain (PPSP) after total knee arthroplasty (TKA). The objective of this study is to c…
View article: Correlation between tibial and femoral bone and cartilage changes in end-stage knee osteoarthritis
Correlation between tibial and femoral bone and cartilage changes in end-stage knee osteoarthritis Open
Knee osteoarthritis is a whole joint disease highlighting the coupling of cartilage and bone adaptations. However, the structural properties of the subchondral bone plate (SBP) and underlying subchondral trabecular bone (STB) in the femora…
View article: Outcome of lateral retinacular nerve transection combined with release for recalcitrant iliotibial band friction syndrome
Outcome of lateral retinacular nerve transection combined with release for recalcitrant iliotibial band friction syndrome Open
In this retrospective study, a technique consisting in neurolysis of the lateral retinacular nerve combined with a partial release through elliptic excision of the iliotibial band (ITB) is evaluated for efficacy in recalcitrant ITB frictio…
View article: Comparison of conventional and cooled radiofrequency treatment of the genicular nerves versus sham procedure for patients with chronic knee pain: protocol for a multicentre, double-blind, randomised controlled trial (COGENIUS)
Comparison of conventional and cooled radiofrequency treatment of the genicular nerves versus sham procedure for patients with chronic knee pain: protocol for a multicentre, double-blind, randomised controlled trial (COGENIUS) Open
Introduction The prevalence of chronic knee pain is increasing. Osteoarthritis (OA) and persistent postsurgical pain (PPSP) are two important causes of knee pain. Chronic knee pain is primarily treated with medications, physiotherapy, life…
View article: A Simple Technique for Reconstruction of the Medial Patellofemoral Ligament With Patellar Soft-Tissue Fixation Using Synthetic Suture Tape Internal Bracing
A Simple Technique for Reconstruction of the Medial Patellofemoral Ligament With Patellar Soft-Tissue Fixation Using Synthetic Suture Tape Internal Bracing Open
Recurrent patellar dislocation is most commonly treated with an isolated medial patellofemoral ligament reconstruction using autograft tissue. Harvest and fixation of these grafts have some theoretical disadvantages. With this Technical No…
View article: Letter to the Editor: Editor’s Spotlight/Take 5: Has Arthroscopic Meniscectomy Use Changed in Response to the Evidence? A Large-database Study From Spain
Letter to the Editor: Editor’s Spotlight/Take 5: Has Arthroscopic Meniscectomy Use Changed in Response to the Evidence? A Large-database Study From Spain Open
1Professor of Orthopedics, Ziekenhuis Oost-Limburg, Genk, Belgium J. Bellemans, ZOL Genk, Ziekenhuis Oost-Limburg, Schiepse Bos 6, 3600 Genk, Belgium, Email: [email protected] (RE: Leopold SS. Editor's Spotlight/Take 5: Has arthroscopic me…
View article: Comparison of cooled versus conventional radiofrequency treatment of the genicular nerves for chronic knee pain: a multicenter non-inferiority randomized pilot trial (COCOGEN trial)
Comparison of cooled versus conventional radiofrequency treatment of the genicular nerves for chronic knee pain: a multicenter non-inferiority randomized pilot trial (COCOGEN trial) Open
Background Radiofrequency (RF) treatment of the genicular nerves has the potential to reduce chronic knee pain due to osteoarthritis or persistent postsurgical pain, however, a direct comparison between the two main modalities used, conven…
View article: Changes in coronal knee-alignment parameters during the osteoarthritis process in the varus knee
Changes in coronal knee-alignment parameters during the osteoarthritis process in the varus knee Open
Therapeutic Study, Level III.
View article: Arithmetic hip‐knee‐ankle angle and stressed hip‐knee‐ankle angle: equivalent methods for estimating constitutional lower limb alignment in kinematically aligned total knee arthroplasty
Arithmetic hip‐knee‐ankle angle and stressed hip‐knee‐ankle angle: equivalent methods for estimating constitutional lower limb alignment in kinematically aligned total knee arthroplasty Open
Purpose Kinematically aligned total knee arthroplasty (KA TKA) relies on precise determination of constitutional alignment to set resection targets. The arithmetic hip‐knee‐ankle angle (aHKA) is a radiographic method to estimate constituti…
View article: Can the Output of a Learned Classification Model Monitor a Person’s Functional Recovery Status Post-Total Knee Arthroplasty?
Can the Output of a Learned Classification Model Monitor a Person’s Functional Recovery Status Post-Total Knee Arthroplasty? Open
Osteoarthritis is a common musculoskeletal disorder. Classification models can discriminate an osteoarthritic gait pattern from that of control subjects. However, whether the output of learned models (probability of belonging to a class) i…
View article: Complex regional pain syndrome of the knee after conventional radiofrequency ablation of the genicular nerves treated successfully with dorsal root ganglion stimulation: A case report
Complex regional pain syndrome of the knee after conventional radiofrequency ablation of the genicular nerves treated successfully with dorsal root ganglion stimulation: A case report Open
Background Radiofrequency (RF) treatment of the genicular nerves offers pain relief in patients suffering from chronic knee pain including persistent post‐surgical knee pain (PPSP). We present the first case report of the development of co…
View article: The importance of joint line obliquity: a radiological analysis of restricted boundaries in normal knee phenotypes to inform surgical decision making in kinematically aligned total knee arthroplasty
The importance of joint line obliquity: a radiological analysis of restricted boundaries in normal knee phenotypes to inform surgical decision making in kinematically aligned total knee arthroplasty Open
Purpose Restricted kinematic alignment (rKA) in total knee arthroplasty (TKA) aims to restore native soft tissue laxities while limiting alignment extremes that risk prosthetic failure. However, there is no consensus where restricted bound…
View article: The lateral joint line opening: a radiographic indicative parameter for high grade varus knees
The lateral joint line opening: a radiographic indicative parameter for high grade varus knees Open
Purpose It is usually assumed that the severity of varus osteoarthritis (OA) of the knee is correlated with the axis deviation of the limb. Despite this, there is currently no clear radiographic definition to define a so‐called ‘high degre…
View article: A retrospective study on patients with chronic knee pain treated with ultrasound‐guided radiofrequency of the genicular nerves (RECORGEN trial)
A retrospective study on patients with chronic knee pain treated with ultrasound‐guided radiofrequency of the genicular nerves (RECORGEN trial) Open
Introduction Radiofrequency (RF) treatment of the genicular nerves is a promising treatment for chronic osteoarthritic and persistent postsurgical knee pain (PPSP), refractory to conventional medical management. Methods The RECORGEN study …
View article: Arithmetic hip-knee-ankle angle (aHKA): An algorithm for estimating constitutional lower limb alignment in the arthritic patient population
Arithmetic hip-knee-ankle angle (aHKA): An algorithm for estimating constitutional lower limb alignment in the arthritic patient population Open
Aims Once knee arthritis and deformity have occurred, it is currently not known how to determine a patient’s constitutional (pre-arthritic) limb alignment. The purpose of this study was to describe and validate the arithmetic hip-knee-ankl…
View article: Validated Ultrasound Speckle Tracking Method for Measuring Strains of Knee Collateral Ligaments In-Situ during Varus/Valgus Loading
Validated Ultrasound Speckle Tracking Method for Measuring Strains of Knee Collateral Ligaments In-Situ during Varus/Valgus Loading Open
Current ultrasound techniques face several challenges to measure strains when translated from large tendon to in-situ knee collateral ligament applications, despite the potential to reduce knee arthroplasty failures attributed to ligament …
View article: Coronal Plane Alignment of the Knee (CPAK) classification
Coronal Plane Alignment of the Knee (CPAK) classification Open
Aims A comprehensive classification for coronal lower limb alignment with predictive capabilities for knee balance would be beneficial in total knee arthroplasty (TKA). This paper describes the Coronal Plane Alignment of the Knee (CPAK) cl…
View article: The contralateral limb is no reliable reference to restore coronal alignment in TKA
The contralateral limb is no reliable reference to restore coronal alignment in TKA Open
Purpose Implementation of morphometric reference data from the contralateral, unaffected lower limb is suggested when reconstructing the coronal plane alignment in TKA. Limited information, however, is available which confirms this left‐to…
View article: The arithmetic HKA (aHKA) predicts the constitutional alignment of the arthritic knee compared to the normal contralateral knee
The arithmetic HKA (aHKA) predicts the constitutional alignment of the arthritic knee compared to the normal contralateral knee Open
Aims An algorithm to determine the constitutional alignment of the lower limb once arthritic deformity has occurred would be of value when undertaking kinematically aligned total knee arthroplasty (TKA). The purpose of this study was to de…
View article: The arithmetic HKA (aHKA) predicts the constitutional alignment of the arthritic knee compared to the normal contralateral knee
The arithmetic HKA (aHKA) predicts the constitutional alignment of the arthritic knee compared to the normal contralateral knee Open
Aims An algorithm to determine the constitutional alignment of the lower limb once arthritic deformity has occurred would be of value when undertaking kinematically aligned total knee arthroplasty (TKA). The purpose of this study was to de…
View article: Discriminant validity of 3D joint kinematics and centre of mass displacement measured by inertial sensor technology during the unipodal stance task
Discriminant validity of 3D joint kinematics and centre of mass displacement measured by inertial sensor technology during the unipodal stance task Open
Inertial sensor based movement analysis can discriminate between healthy controls and persons with severe knee KOA for lateral trunk lean and hip flexion, but unfortunately not for the knee angles. Further research is required to improve t…
View article: The Role of the Posterolateral Tibial Slope in the Rotational Instability of the Knee in Patients Affected by a Complete Isolated Anterior Cruciate Ligament Injury: Its Value in the Decision-Making Process during the Anterolateral Ligament Reconstruction
The Role of the Posterolateral Tibial Slope in the Rotational Instability of the Knee in Patients Affected by a Complete Isolated Anterior Cruciate Ligament Injury: Its Value in the Decision-Making Process during the Anterolateral Ligament Reconstruction Open
Purpose The aim of this retrospective, multicenter study was to investigate the correlation between a high degree of rotatory instability, posterolateral tibial slope (PLTS), and anterolateral ligament (ALL) injury. Methods The study popul…