123 results match your criteria Skier's Thumb


Athletic Profile of Alpine Ski Racers: A Systematic Review.

J Strength Cond Res 2018 Dec;32(12):3574-3583

Department of Physical Activity Sciences, University of Quebec in Montreal, Montreal, Quebec, Canada.

Ferland, PM and Comtois, AS. Athletic profile of alpine ski racers: a systematic review. J Strength Cond Res 32(12): 3591-3600, 2018-The purpose of this study was to review all anthropometric and physical test results performed on alpine ski racers that were published in the scientific literature to build an athletic profile specific to the skier's sex and level. Read More

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December 2018
6 Reads

The impact of start strategy on start performance in alpine skiing exists on flat, but not on steep inclines.

J Sports Sci 2018 Oct 13:1-9. Epub 2018 Oct 13.

e School of Sport Sciences , UiT Arctic University of Norway , Tromsø , Norway.

Here, we explored the relationship between incline and start strategy during alpine skiing. Eight FIS skiers performed starts on a flat (3°) and steep (21°) incline employing five different strategies. Their times, trajectories and velocities were monitored with a GNSS system and video. Read More

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October 2018

Slipstreaming in Gravity Powered Sports: Application to Racing Strategy in Ski Cross.

Front Physiol 2018 31;9:1032. Epub 2018 Jul 31.

Smart Equipment Engineering and Wearable Technology Research Program, Centre for Design Innovation, Swinburne University of Technology, Melbourne, VIC, Australia.

The principles of slipstreaming or drafting are very well known in muscle-powered sports, but unknown in gravity-powered sports. Typical examples of gravity-powered sports, where several athletes are racing against each other, are ski-cross and snowboard-cross. The aim of this research is to investigate the effectiveness and practical applicability of slipstreaming in ski-cross. Read More

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Continuing to work with a sterile thumb splint: A case report.

Hand Surg Rehabil 2018 May 17. Epub 2018 May 17.

Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Forchstrasse 340, 8008 Zurich, Switzerland. Electronic address:

Nonoperative treatment of an injured ulnar collateral ligament of the thumb metacarpophalangeal (MCP) joint (skier's thumb without a Stener lesion) is managed by immobilization. A splint is applied on the radial side with the thumb in slight flexion to immobilize the MCP joint and allow motion in the interphalangeal joint. Thermoplastic splints are mainly used for daily activities with the advantage of custom fabrication for optimal comfort. Read More

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May 2018
2 Reads

The role of path length- and speed-related factors for the enhancement of section performance in alpine giant slalom.

Eur J Sport Sci 2018 Aug 27;18(7):911-919. Epub 2018 Mar 27.

a Department of Sport Science and Kinesiology , University of Salzburg , Hallein-Rif , Austria.

Knowing how to enhance alpine skiing performance is essential for effective coaching. The purpose of this study was to explore the role of path length- and speed-related factors for performance enhancement, while skiing on a homogeneously set/constantly inclined giant slalom course section (average gate distance: 27 m; offset: 8 m; slope inclination: 26°). During a video-based three-dimensional kinematic field-experiment, the data of six athletes who skied a two-gate section on four different types of skis were collected. Read More

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Injuries to the Collateral Ligaments of the Metacarpophalangeal and Interphalangeal Joints: Sonographic Appearance.

J Ultrasound Med 2018 Sep 26;37(9):2117-2133. Epub 2018 Feb 26.

Cabinet Imagerie Médicale, Geneva, Switzerland.

Injuries to the collateral ligaments of the metacarpophalangeal (MCP) and interphalangeal (IP) joints are commonly encountered in both athletes and nonathletes. They require prompt evaluation to ensure proper management and prevent loss of joint motion and permanent disability. Imaging is often required to confirm the diagnosis and assess injury severity. Read More

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September 2018
1 Read

Standing Height as a Prevention Measure for Overuse Injuries of the Back in Alpine Ski Racing: A Kinematic and Kinetic Study of Giant Slalom.

Orthop J Sports Med 2018 Jan 8;6(1):2325967117747843. Epub 2018 Jan 8.

Department of Sport Science and Kinesiology, University of Salzburg, Salzburg, Austria.

Background: In alpine ski racing, typical loading patterns of the back include a combined occurrence of spinal bending, torsion, and high peak loads. These factors are known to be associated with high spinal disc loading and have been suggested to be attributable to different types of spine deterioration. However, little is known about the effect of standing height (ie, the distance between the bottom of the running surface of the ski and the ski boot sole) on the aforementioned back loading patterns. Read More

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January 2018
10 Reads

The Training Characteristics of the World's Most Successful Female Cross-Country Skier.

Front Physiol 2017 18;8:1069. Epub 2017 Dec 18.

Department of Neuromedicine and Movement Science, Centre for Elite Sports Research, Norwegian University of Science and Technology, Trondheim, Norway.

The main aim of this study was to investigate the training characteristics of the most successful female cross-country skier ever during the best period of her career. The participant won six gold medals at the Olympic Games, 18 gold medals at the World Championship, and 110 World Cup victories. Day-to-day training diary data, interviews, and physiological tests were analyzed. Read More

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December 2017

Automatic Classification of Sub-Techniques in Classical Cross-Country Skiing Using a Machine Learning Algorithm on Micro-Sensor Data.

Sensors (Basel) 2017 Dec 28;18(1). Epub 2017 Dec 28.

Centre for Elite Sports Research, Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Science, Norwegian University of Science and Technology, 7491 Trondheim, Norway.

The automatic classification of sub-techniques in classical cross-country skiing provides unique possibilities for analyzing the biomechanical aspects of outdoor skiing. This is currently possible due to the miniaturization and flexibility of wearable inertial measurement units (IMUs) that allow researchers to bring the laboratory to the field. In this study, we aimed to optimize the accuracy of the automatic classification of classical cross-country skiing sub-techniques by using two IMUs attached to the skier's arm and chest together with a machine learning algorithm. Read More

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December 2017
4 Reads

An Inertial Sensor-Based Method for Estimating the Athlete's Relative Joint Center Positions and Center of Mass Kinematics in Alpine Ski Racing.

Front Physiol 2017 1;8:850. Epub 2017 Nov 1.

Laboratory of Movement Analysis and Measurement, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.

For the purpose of gaining a deeper understanding of the relationship between external training load and health in competitive alpine skiing, an accurate and precise estimation of the athlete's kinematics is an essential methodological prerequisite. This study proposes an inertial sensor-based method to estimate the athlete's relative joint center positions and center of mass (CoM) kinematics in alpine skiing. Eleven inertial sensors were fixed to the lower and upper limbs, trunk, and head. Read More

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November 2017
5 Reads

A Biomechanical Evaluation of a 2-Suture Anchor Repair Technique for Thumb Metacarpophalangeal Joint Ulnar Collateral Ligament Injuries.

Hand (N Y) 2018 Sep 24;13(5):581-585. Epub 2017 Aug 24.

1 Brown University, Providence, RI, USA.

Background: A complete thumb ulnar collateral ligament (UCL) repaired with 1-suture anchor has been demonstrated to be significantly weaker compared with the intact UCL. The objective of this study is to test the biomechanical strength of a 2-anchor thumb UCL repair.

Methods: Nine paired fresh-frozen hands were used for this biomechanical analysis. Read More

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September 2018
17 Reads

Case Report: Oblique Fracture of the Ulnar Sesamoid Bone of the Metacarpophalangeal Joint, a Rare Pathology.

J Orthop Case Rep 2017 Mar-Apr;7(2):29-32

Department of Medicine, Catholic University of Leuven, KU Leuven, Belgium.

Introduction: Fractures of the sesamoid bones of the metacarpophalangeal joint (MCPJ) are a rare pathology in hand trauma. Only a few case reports and case series were found in literature. The diagnosis of an ulnar sesamoid bone fracture of the MCPJ is difficult and can pose a differential diagnostic problem with Stener lesions or ulnar collateral ligament (UCL) instability. Read More

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August 2017
7 Reads

Variation in the Rate of Surgery for Ulnar Collateral Ligament Injury of the Metacarpophalangeal Joint of the Thumb.

Hand (N Y) 2017 09 1;12(5):512-517. Epub 2016 Dec 1.

1 Harvard Medical School, Boston, MA, USA.

Background: The indications for repair of rupture of the ulnar collateral ligament (UCL) of the metacarpophalangeal (MP) joint of the thumb are debated. We studied factors predictive of operative treatment.

Methods: In this retrospective study, we queried the research database from 3 affiliated urban hospitals in a single city in the United States and identified 383 patients with a thumb MP UCL injury. Read More

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September 2017
12 Reads

Cross-country skiing movement factorization to explore relationships between skiing economy and athletes' skills.

Scand J Med Sci Sports 2018 Feb 26;28(2):565-574. Epub 2017 Jul 26.

CeRiSM (Research Centre of Mountain Sport and Health), University of Verona, Rovereto, Italy.

We investigated the relationships between the biomechanics of the double poling (DP) technique in cross-country skiing, its economy, and athletes' skill. To this aim, skiers' motion has been factorized into components through principal component analysis (PCA). Eight high-level (HL) and eight regional level (RL) male cross-country skiers performed a 5-minute submaximal DP trial while roller skiing on a treadmill at 14 km h and 2° incline. Read More

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February 2018
9 Reads

Chronic instability of the thumb metacarpo-phalangeal joint: Seven-year outcomes of three surgical techniques.

Orthop Traumatol Surg Res 2017 10 30;103(6):923-926. Epub 2017 May 30.

Unité de chirurgie de la main et du membre supérieur, services de chirurgie orthopédique 1 et 2, hôpital Trousseau, CHRU de Tours, avenue de la République, 37170 Chambray-lès-Tours, France.

Background: Severe sprain of the thumb metacarpo-phalangeal joint (TMCPJ) is a common injury whose functional outcome is good when repair is performed at the acute stage. The diagnosis is often missed, however, leading to chronic instability. The optimal treatment of chronic TMCPJ instability is controversial. Read More

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October 2017
17 Reads

[Epidemiological data of Hungarian skiers' and snowboarders' medical problems].

Orv Hetil 2017 Apr;158(16):618-624

SOS Hungary Orvosi Szolgálat Budapest.

Introduction And Aim: There are no high mountains or any advantageous circumstances for winter sports in Hungary, yet within the 10 million population there are about half a million people (the exact number is 550,000) who tend to go for skiing or snowboarding abroad. Authors compared the injury statistical data with results described in the international literature in order to develop conclusions about the differences in the injury patterns and frequency between the Hungarian ones' and those found in countries with plenty of winter sport possibilities.

Method: Authors analysed the winter sport injury cases of an insurance company. Read More

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April 2017
2 Reads

Long-Term Outcomes of Primary Repair of Chronic Thumb Ulnar Collateral Ligament Injuries.

Hand (N Y) 2016 09 14;11(3):303-309. Epub 2016 Mar 14.

Mayo Clinic, Rochester, MN, USA.

The purpose of this study is to evaluate long-term outcomes of ligamentous repair rather than reconstruction for chronic thumb ulnar collateral ligament (UCL) injuries. Patients at least 15-years status-post repair of a chronic (greater than 6 weeks) UCL tear were contacted for clinical evaluation, radiographs, and postoperative outcome questionnaires, including the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire, visual analog scale (VAS) pain scale, and study-specific questions. Twelve of 21 (57%) living patients were available for long-term, greater than 15-year follow-up (average 24. Read More

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September 2016
6 Reads

Clinical evaluation vs magnetic resonance imaging of the skier's thumb: A prospective cohort of 30 patients.

Eur J Radiol 2016 Oct 21;85(10):1750-1756. Epub 2016 Jul 21.

Medical Center Haaglanden, Department of Surgery, Lijnbaan 32, 2512 VA The Hague, The Netherlands. Electronic address:

Introduction: A skiers thumb, or a partial or complete rupture of the ulnar collateral ligament (UCL) is a clinical diagnosis. Swelling, pain, natural left-right difference and inexperience of a young physician can cause difficulty to correctly diagnose this injury. However, our theory is that any physician, given the correct instructions, should be able to diagnose this injury solely on clinical findings, without the necessity of additional imaging. Read More

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October 2016
8 Reads

Collecting Kinematic Data on a Ski Track with Optoelectronic Stereophotogrammetry: A Methodological Study Assessing the Feasibility of Bringing the Biomechanics Lab to the Field.

PLoS One 2016 25;11(8):e0161757. Epub 2016 Aug 25.

Department of Sport Science and Kinesiology, University of Salzburg, Hallein-Rif, Austria.

In the laboratory, optoelectronic stereophotogrammetry is one of the most commonly used motion capture systems; particularly, when position- or orientation-related analyses of human movements are intended. However, for many applied research questions, field experiments are indispensable, and it is not a priori clear whether optoelectronic stereophotogrammetric systems can be expected to perform similarly to in-lab experiments. This study aimed to assess the instrumental errors of kinematic data collected on a ski track using optoelectronic stereophotogrammetry, and to investigate the magnitudes of additional skiing-specific errors and soft tissue/suit artifacts. Read More

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Imaging of Sports-related Hand and Wrist Injuries: Sports Imaging Series.

Radiology 2016 Jun;279(3):674-92

From the Department of Radiology and Musculoskeletal Imaging, CHRU Lille Centre de Consultations et d'Imagerie de l'Appareil Locomoteur, Rue du Professeur Emile Laine, 59037 Lille, France.

Hand and wrist injuries are common occurrences in amateur and professional sports and many of them are sport-specific. These can be divided into two categories: traumatic injuries and overuse injuries. The aim of this article is to review the most common hand and wrist sports-related lesions. Read More

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June 2016
8 Reads

Automatic Identification of Subtechniques in Skating-Style Roller Skiing Using Inertial Sensors.

Sensors (Basel) 2016 Apr 2;16(4). Epub 2016 Apr 2.

Department of Sports Science, Japan Institute of Sports Sciences, 3-15-1 Nishigeoka, Kita-ku, Tokyo 115-0056, Japan.

This study aims to develop and validate an automated system for identifying skating-style cross-country subtechniques using inertial sensors. In the first experiment, the performance of a male cross-country skier was used to develop an automated identification system. In the second, eight male and seven female college cross-country skiers participated to validate the developed identification system. Read More

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April 2016
1 Read

Potential of IMU Sensors in Performance Analysis of Professional Alpine Skiers.

Sensors (Basel) 2016 Apr 1;16(4):463. Epub 2016 Apr 1.

Department of Physical Education, Seoul National University, Seoul 08826, Korea.

In this paper, we present an analysis to identify a sensor location for an inertial measurement unit (IMU) on the body of a skier and propose the best location to capture turn motions for training. We also validate the manner in which the data from the IMU sensor on the proposed location can characterize ski turns and performance with a series of statistical analyses, including a comparison with data collected from foot pressure sensors. The goal of the study is to logically identify the ideal location on the skier's body to attach the IMU sensor and the best use of the data collected for the skier. Read More

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April 2016
13 Reads

[SKIERS URINARY CATECHOLAMINES EXCRETION AT REST AND BY COMPETITIVE LOADS LENGTH VARIETY].

Authors:
A S Chinkin

Ross Fiziol Zh Im I M Sechenova 2015 Nov;101(11):1324-30

While night sleeps urinary noradrenaline excretion of skilled skiers less than their untrained peers, but the difference in excretion of adrenaline is not revealed. By increasing the distance and time to overcome it during skiing catecholamine excretion is increased both - totally and per minute. Most urinary catecholamines detected at a distance of 50 km in low sliding: increased excretion of adrenaline - 84 times, and noradrenaline -95 times. Read More

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November 2015

Course Setting as a Prevention Measure for Overuse Injuries of the Back in Alpine Ski Racing: A Kinematic and Kinetic Study of Giant Slalom and Slalom.

Orthop J Sports Med 2016 Feb 25;4(2):2325967116630719. Epub 2016 Feb 25.

Department of Sport Science and Kinesiology, University of Salzburg, Hallein-Rif, Austria.

Background: A combination of frontal bending, lateral bending, and torsion in the loaded trunk has been suggested to be a mechanism leading to overuse injuries of the back in Alpine ski racing. However, there is limited knowledge about the effect of course setting on the aforementioned back-loading patterns.

Purpose: To investigate the effect of increased gate offset on the skier's overall trunk kinematics and the occurring ground-reaction forces and to compare these variables between the competition disciplines giant slalom (GS) and slalom (SL). Read More

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February 2016
8 Reads

Physiological Demands of Competitive Sprint and Distance Performance in Elite Female Cross-Country Skiing.

J Strength Cond Res 2016 Aug;30(8):2138-44

1School of Education, Health and Social Studies, Dalarna University, Falun, Sweden; 2Sports Medicine Unit, Umeå University, Umeå, Sweden; 3Dala Sports Academy, Falun, Sweden; and 4Regional Sports Federation of Dalarna, Falun, Sweden.

Carlsson, M, Carlsson, T, Wedholm, L, Nilsson, M, Malm, C, and Tonkonogi, M. Physiological demands of competitive sprint and distance performance in elite female cross-country skiing. J Strength Cond Res 30(8): 2138-2144, 2016-The purpose was to investigate the relationship between elite females' competitive performance capability in sprint and distance cross-country skiing and the variables of gross efficiency (GE), work rate at the onset of blood-lactate accumulation (OBLA4mmol), maximal oxygen uptake (V[Combining Dot Above]O2max), maximal speed (Vmax), and peak upper-body oxygen uptake (V[Combining Dot Above]O2peak). Read More

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August 2016
10 Reads

How Do World-Class Nordic Combined Athletes Differ From Specialized Cross-Country Skiers and Ski Jumpers in Sport-Specific Capacity and Training Characteristics?

Int J Sports Physiol Perform 2016 Oct 24;11(7):899-906. Epub 2016 Aug 24.

Purpose: To compare sport-specific laboratory capacities and the annual training of world-class Nordic combined (NC) athletes with specialized ski jumpers (SJ) and cross-country (XC) skiers.

Methods: Five world-class athletes from each sports discipline were compared. Ski jump imitations were performed on a 3-dimensional force plate in NC athletes and SJ, whereas XC skiing characteristics were obtained from submaximal and maximal roller ski skating on a treadmill in NC athletes and XC skiers. Read More

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October 2016
7 Reads

Simultaneous Bilateral Functional Radiography in Ulnar Collateral Ligament Lesion of the Thumb: An Original Technique.

Am J Orthop (Belle Mead NJ) 2015 Aug;44(8):359-62

Department of Orthopaedic Surgery, University General Hospital of Ciudad Real, Ciudad Real, Spain.

In any thumb injury, particularly one caused by hyperabduction, an ulnar collateral ligament lesion (gamekeeper's or skier's thumb) must be considered. If the diagnosis is suspected, and radiographs show no fracture, comparative radiographs should be obtained in forced valgus. This examination, which uses a stress test to cause joint tilt, is crucial in making an accurate diagnosis and deciding on the most appropriate therapeutic approach. Read More

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August 2015
3 Reads

[Hand injuries in mountain sports].

Unfallchirurg 2015 Jun;118(6):515-9

Klinik für Handchirurgie, Rhön-Klinikum, Salzburger Leite 1, 97615, Bad Neustadt, Deutschland,

Background: Apart from clean cut finger amputations, every kind of hand injury can be seen in mountain and winter sports but only skier's thumb and injuries of the pulley system in sport climbers are seen in a greater number of cases. Nevertheless, these two common injuries as well as the rare frostbite of the fingers are often underdiagnosed or overdiagnosed as well as undertreated or overtreated.

Purpose: This paper describes the diagnostics and treatment of skier's thumb, injuries of the pulley system in sport climbers and frostbite of the fingers. Read More

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June 2015
3 Reads

The influence of slope and speed on locomotive power in cross-country skiing.

Authors:
Kjell Hausken

Hum Mov Sci 2014 Dec 15;38:281-92. Epub 2014 Nov 15.

Faculty of Sciences, University of Stavanger, 4036 Stavanger, Norway. Electronic address:

Purpose: A model was developed for cross-country skiing where locomotive power depends on speed and slope as variables, and further depends on snow friction, gravitation, mass, air drag, wind, and air density. Model parameters were estimated experimentally.

Methods: Two differential equations were developed for how locomotive power depends on speed and slope. Read More

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December 2014

Thumb ulnar collateral and radial collateral ligament injuries.

Clin Sports Med 2015 Jan 11;34(1):117-26. Epub 2014 Oct 11.

Hand Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8233, St Louis, MO 63110, USA. Electronic address:

Thumb metacarpophalangeal ulnar and radial collateral ligament injuries occur frequently in the competitive athlete. Collateral ligament integrity is essential to joint stability, pinch strength, and pain-free motion. Acute rupture of the ulnar collateral ligament is due to a sudden radial deviation force on the abducted thumb and is referred to as skier's thumb. Read More

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January 2015
20 Reads

Increased bronchial parasympathetic tone in elite cross-country and biathlon skiers: a randomised crossover study.

Br J Sports Med 2014 Nov 21. Epub 2014 Nov 21.

Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway.

Background: Increased parasympathetic activity in endurance-trained athletes has been reported by heart rate variability and pupillometry. Our primary objective was to assess parasympathetic activity and tone in the lower respiratory tract by investigating the effect of cholinergic antagonism by inhaled ipratropium bromide compared to the β-receptor stimulating effect of inhaled salbutamol in elite cross-country and biathlon skiers. We also examined the medications' relationship to cholinergic sensitivity as measured by bronchial responsiveness to methacholine (PD). Read More

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November 2014

Estimation of alpine skier posture using machine learning techniques.

Sensors (Basel) 2014 Oct 13;14(10):18898-914. Epub 2014 Oct 13.

Faculty of Sport, University of Ljubljana, Ljubljana 1000, Slovenia.

High precision Global Navigation Satellite System (GNSS) measurements are becoming more and more popular in alpine skiing due to the relatively undemanding setup and excellent performance. However, GNSS provides only single-point measurements that are defined with the antenna placed typically behind the skier's neck. A key issue is how to estimate other more relevant parameters of the skier's body, like the center of mass (COM) and ski trajectories. Read More

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October 2014
2 Reads

Analysis of a severe head injury in World Cup alpine skiing.

Med Sci Sports Exerc 2015 Jun;47(6):1113-8

1Oslo Sports Trauma Research Center, Oslo, NORWAY; 2Section of Orthopedic Surgery, School of Medicine, Tokyo Medical and Dental University Hospital, Tokyo, JAPAN; 3Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, NORWAY; 4Royal Institute of Technology, Stockholm, SWEDEN; 5Australian Centre for Research into Injury in Sport and its Prevention (ACRISP), Federation University Australia, Ballarat, AUSTRALIA; 6Department of Sport Science, University of Innsbruck, Innsbruck, AUSTRIA; 7Department of Sport and Exercise Science, University of Salzburg, Salzburg, AUSTRIA; 8Aspetar Orthopaedic and Sports Medicine Hospital, Doha, QATAR.

Unlabelled: Traumatic brain injury (TBI) is the leading cause of death in alpine skiing. It has been found that helmet use can reduce the incidence of head injuries between 15% and 60%. However, knowledge on optimal helmet performance criteria in World Cup alpine skiing is currently limited owing to the lack of biomechanical data from real crash situations. Read More

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June 2015
4 Reads

Using the power balance model to simulate cross-country skiing on varying terrain.

Open Access J Sports Med 2014 7;5:89-98. Epub 2014 May 7.

Faculty of Social Sciences, University of Stavanger, Stavanger, Norway.

The current study adapts the power balance model to simulate cross-country skiing on varying terrain. We assumed that the skier's locomotive power at a self-chosen pace is a function of speed, which is impacted by friction, incline, air drag, and mass. An elite male skier's position along the track during ski skating was simulated and compared with his experimental data. Read More

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Injury to ulnar collateral ligament of thumb.

Orthop Surg 2014 Feb;6(1):1-7

Department of Orthopaedics, Jalan Batu Hampar, Bukit Baru, Malaysia.

Injury of the ulnar collateral ligament (UCL) of thumb can be incapacitating if untreated or not treated properly. This injury is notorious for frequently being missed by inexperienced health care personnel in emergency departments. It has frequently been described in skiers, but also occurs in other sports such as rugby, soccer, handball, basketball, volleyball and even after a handshake. Read More

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February 2014
28 Reads

The influence of thumb metacarpophalangeal joint rotation on the evaluation of ulnar collateral ligament injuries: a biomechanical study in a cadaver model.

J Hand Surg Am 2014 Mar 1;39(3):474-9. Epub 2014 Feb 1.

Department of Orthopaedic Surgery, Duke University Medical Center, Durham, North Carolina. Electronic address:

Purpose: To determine whether variation in thumb metacarpophalangeal (MCP) joint pronosupination influences perceived ulnar collateral ligament (UCL) stability during clinical stress testing.

Methods: Twelve fresh-frozen specimens underwent sequential evaluation for the following conditions: ligament intact (LI), proper UCL deficient (-pUCL), and proper and accessory UCL deficient (UCL). Valgus stress testing was completed in both 0° and 30° MCP joint flexion for thumb pronation, neutral, and supination. Read More

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March 2014
7 Reads

Fluoroscopy-assisted stress testing of the thumb metacarpophalangeal joint to assess the ulnar collateral ligament.

Hand (N Y) 2013 Jun;8(2):205-9

Department of Orthopaedic Surgery, Maimonides Medical Center, 927 49th St., Brooklyn, NY 11219 USA.

Background: Diagnostic stress testing of ulnar collateral ligament (UCL) injuries of the thumb metacarpophalangeal (MCP) joint is pivotal to determining treatment. Comparison to the uninjured extremity and fluoroscopy-assisted examination are readily available modalities in the assessment of these patients, with 5-10° differences impacting treatment. Comparative examination, however, assumes that both extremities are normally equal, which has never been verified experimentally. Read More

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June 2013
2 Reads

[Skier's thumb].

Ned Tijdschr Geneeskd 2013 ;157(49):A6398

Medisch Centrum Haaglanden, locatie Westeinde, afd. Chirurgie, Den Haag.

Skier's thumb is a partial or complete rupture of the ulnar collateral ligament of the metacarpophalangeal joint of the thumb. It is an injury that rather frequently occurs in certain sports. When diagnosed incorrectly, delay in treatment can ultimately lead to chronic instability and pain. Read More

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August 2014
5 Reads

A modified spica-splint in postoperative early-motion management of skier's thumb lesion: a randomized clinical trial.

Eur J Phys Rehabil Med 2014 Feb 4;50(1):49-57. Epub 2013 Nov 4.

Orthopedics and Hand Surgery The Catholic University School of Medicine, Rome, Italy -

Background: Rupture of ulnar collateral ligament of the thumb (UCL) represents a frequent injury of the hand. Surgical repair is considered the gold standard but postoperative immobilization causes partial stiffness in a percentage of cases.

Aim: The aim of this paper was to assess the effectiveness of a postoperative functional hand-based splint for the thumb which allows immediate postoperative motion. Read More

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February 2014
3 Reads

Comparative evaluation of two skiing simulators as functional training devices for recreational skiers.

J Sports Sci Med 2013 1;12(1):151-8. Epub 2013 Mar 1.

School of Sport Science, Exercise and Health, University of Western Australia , Crawley, Australia.

The aims of this study were to examine two ski simulators, Skimagic and Skier's Edge, and to evaluate their efficacy as functional training devices for skiers. Vertical ground reaction forces, knee flexion angle kinematics and muscles activity were recorded on these devices and compared with those measured in similar condition while skiing on snow. Five ski instructors performed three randomized testing sessions (snow, Skimagic and Skier's Edge). Read More

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October 2013
2 Reads

Rupture of the ulnar collateral ligament of the thumb - a review.

Int J Emerg Med 2013 Aug 12;6(1):31. Epub 2013 Aug 12.

Department of Surgury, Medisch Centrum Haaglanden, The Hague, The Netherlands.

Skier's thumb is a partial or complete rupture of the ulnar collateral ligament of the metacarpophalangeal joint of the thumb. It is an often-encountered injury and can lead to chronic pain and instability when diagnosed incorrectly. Knowledge of the anatomy and accurate physical examination are essential in the evaluation of a patient with skier's thumb. Read More

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August 2013
2 Reads

Kite skier's toe: an unusual case of frostbite.

Wilderness Environ Med 2013 Jun 7;24(2):136-40. Epub 2013 Mar 7.

Department of Surgery, University of Utah Health Sciences Center, Salt Lake City, UT 84123, USA.

Frostbite is a well-known occurrence in outdoor winter activity and exploration. We report the first documented case of frostbite associated with kite skiing. Kite skiing is an emerging sport that uses a kite to harness wind power for recreation and to travel long distances on skis. Read More

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June 2013
4 Reads

Thumb metacarpophalangeal joint collateral ligament injury management.

Hand Clin 2012 Aug;28(3):361-70, ix-x

Division of Hand and Upper Extremity Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA.

The thumb collateral ligaments at the metacarpophalangeal joint are important to the elite athlete for precision grip and pinch. Injuries to these ligaments can result in pain and instability and are seen at a higher frequency at the elite level. Whereas the collateral ligament tears used to be associated primarily with recreational skier's injury, these injuries have been reported with increasing frequency in major professional sports. Read More

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August 2012
3 Reads

Quantifying instantaneous performance in alpine ski racing.

J Sports Sci 2012 24;30(10):1063-8. Epub 2012 May 24.

Norwegian School of Sport Sciences, Ulleval Stadion, Oslo, P.O. box 4014, Norway.

Alpine ski racing is a popular sport in many countries and a lot of research has gone into optimising athlete performance. Two factors influence athlete performance in a ski race: speed and the chosen path between the gates. However, to date there is no objective, quantitative method to determine instantaneous skiing performance that takes both of these factors into account. Read More

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October 2012
2 Reads

Validation of physiological tests in relation to competitive performances in elite male distance cross-country skiing.

J Strength Cond Res 2012 Jun;26(6):1496-504

Department of Health and Social Sciences, Dalarna University, Falun, Sweden.

The purpose of the present study was to establish which physiological test parameters reflects the distance performances in the Swedish National Championships in cross-country skiing (SNC) and the International Ski Federation's ranking points for distance performances (FISdist). The present study also aimed to create multiple regression models to describe skiing performance for the SNC distance races and International Ski Federation's (FIS) ranking. Twelve male, Swedish, national elite, cross-country skiers (maximal oxygen consumption [·VO₂max] = 5. Read More

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June 2012
3 Reads

Can clinical examination cause a Stener lesion in patients with skier's thumb?: a cadaveric study.

Clin Anat 2012 Sep 22;25(6):762-6. Epub 2011 Nov 22.

Hand Surgery Unit, Department of Orthopaedic Surgery and Traumatology, Kantonsspital Bruderholz, Bruderholz, Switzerland.

Approximately one-third of all injuries of the upper limb and 7% of all injuries in skiing affect the ulnar collateral ligaments of the thumb metacarpophalangeal joint (skier's thumb). In some patients the collateral ligaments are displaced proximally over the adductor aponeurosis, resulting in a so-called Stener lesion. In these cases surgical treatment is indicated. Read More

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September 2012
6 Reads

The effects of wind and posture on the aerodynamic performance during the flight stage of skiing.

J Biomech Eng 2011 Sep;133(9):091001

Zhejiang College of Construction, Hangzhou 311231, China.

Numerical simulation is conducted to evaluate the wind and posture effects on the aerodynamic performance of a skier during the flight stage. Both steady and unsteady models are applied on a 2D geometry. Using the Fluent code, the fundamental equations of fluid flow are solved simultaneously. Read More

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September 2011

Application of a full body inertial measurement system in alpine skiing: a comparison with an optical video based system.

J Appl Biomech 2010 Nov;26(4):516-21

Institut für Sportwissenschaft, Otto-von Guericke-Universität Magdeburg, Magdeburg, Germany.

This study aims at determining the accuracy of a full body inertial measurement system in a real skiing environment in comparison with an optical video based system. Recent studies have shown the use of inertial measurement systems for the determination of kinematical parameters in alpine skiing. However, a quantitative validation of a full body inertial measurement system for the application in alpine skiing is so far not available. Read More

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November 2010
4 Reads

A comparison of ground reaction forces determined by portable force-plate and pressure-insole systems in alpine skiing.

J Sports Sci Med 2011 1;10(4):754-62. Epub 2011 Dec 1.

For the determination of ground reaction forces in alpine skiing, pressure insole (PI) systems and portable force plate (FP) systems are well known and widely used in previous studies. The purposes of this study were 1) to provide reference data for the vertical component of the ground reaction forces (vGRF) during alpine skiing measured by the PI and FP systems, and 2) to analyze whether the differences in the vGRF measured by the PI and the FP depend on a skier's level, skiing mode and pitch. Ten expert and ten intermediate level skiers performed 10 double turns with the skiing technique "Carving in Short Radii" as High Dynamic Skiing mode and "Parallel Ski Steering in Long Radii" as Low Dynamic Skiing mode on both the steep (23 °) and the flat (15 °) slope twice. Read More

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October 2013

Energy cost and efficiency of ski mountaineering. A laboratory study.

J Sports Med Phys Fitness 2010 Dec;50(4):400-6

Department of Physics, University of TrentoPovo, Trento, Italy.

Aim: The purpose of this study is to estimate the energy cost of ski mountaineering at different speeds under laboratory conditions.

Methods: By using roller skis on a motorized treadmill we have estimated the energy cost and biomechanics parameters of ski mountaineering as a function of climbing speed at the gradient of 21%.

Results: The metabolic energy spent for unit mass and distance, C, shows a broad minimum of about 10. Read More

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December 2010