Sports Medicine & Arthroscopy Journal Scan

High prevalence of overuse injury among iron-distance triathletes.

Br J Sports Med. 2013 Jul 31;

Authors: Andersen CA, Clarsen B, Johansen TV, Engebretsen L

Abstract
BACKGROUND: Triathlon is an increasingly popular sport at both the elite and the recreational level. However, there have been few high-quality studies of injuries and illnesses among triathletes.
OBJECTIVE: To register overuse problems and acute injuries among iron-distance triathletes throughout a training season leading up to a major event.
METHODS: A 26-week prospective cohort study was conducted including 174 participants of the 2011 Norseman Xtreme Triathlon. Data on overuse injuries located in the shoulder, lower back, thigh, knee and lower leg were collected every second week using the Oslo Sports Trauma Research Center Overuse Injury Questionnaire. Illnesses, acute injuries and overuse problems affecting other anatomical areas were also recorded using standard injury surveillance methods.

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Incidence of postoperative infections requiring reoperation after arthroscopic knee surgery.

Arthroscopy. 2013 Aug;29(8):1355-61

Authors: Yeranosian MG, Petrigliano FA, Terrell RD, Wang JC, McAllister DR

Abstract
PURPOSE: The purposes of this study were to determine the incidence of infection requiring reoperation after arthroscopic knee surgery during a 6-year period and to compare infection rates across different age groups, genders, geographic regions of the United States, and Current Procedural Terminology (CPT) codes through a retrospective review of a large insurance company database.
METHODS: A retrospective review of an insurance company database was performed for all knee arthroscopies performed in the United States from 2004 to 2009. The database was first queried for all knee arthroscopies, and the number of those cases requiring additional surgery for infection within 30 days was determined to calculate the incidence of infection. The incidence was stratified by gender, age group, region within the United States, and CPT code. A separate analysis for procedures using allografts was also performed.
RESULTS: A total of 432,038 arthroscopic surgeries were performed, and the number of infections requiring drainage was 638, for an overall incidence of infection from 2004 to 2009 of 0.15%. Among adults, men were affected almost twice as often as women (P < .001), and among children, boys were affected almost 3

Examination of acetabular labral tear: a continued diagnostic challenge.

Br J Sports Med. 2013 Jul 31;

Authors: Reiman MP, Mather RC, Hash TW, Cook CE

Abstract
Acetabular labrum tears (ALT) are present in 22-55% of individuals with hip or groin pain. Tears can occur as a result of trauma or degeneration and are markedly associated with femoral acetabular morphological variations. An ALT can lead to biomechanical deficiencies and a loss of stability to the coxafemoral joint due to the labrum serving as a stabilising structure of this joint. The diagnosis of ALT is complex and multidimensional. Although tremendous improvements in diagnostic utility for ALT have occurred in the past 25 years, there are few patient history, clinical examination and special test findings that are unique to the condition. Imaging methods such as MRI, CT and ultrasonography have demonstrated reasonable accuracy, but not at a level that allows use as a stand-alone measure. Outcomes measures that focus on functional limitation or that are used to measure recovery should envelop the complexities of the condition and be captured using both self-report and physical performance measures. Only when patient history, objective testing, clinical examination special testing and imaging are combined can a clinician fully elucidate the multidimensional diagnosis of ALT.

PMID: 23902774 [PubMed - as supplied by publisher]

Read more... http://www.ncbi.nlm.nih.gov/pubmed/23902774?dopt=Abstract

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Anteromedial portal versus transtibial drilling techniques in anterior cruciate ligament reconstruction: any clinical relevance? A retrospective comparative study.

Arthroscopy. 2013 Aug;29(8):1330-7

Authors: Franceschi F, Papalia R, Rizzello G, Del Buono A, Maffulli N, Denaro V

Abstract
PURPOSE: This study aimed to undertake a retrospective analysis of prospectively collected data comparing, at a minimum follow-up of 5 years (78.1 ± 5.3 months v 75.6 ± 4.8 months), the clinical, functional, and radiographic outcomes of 2 homogeneous groups of athletes who had undergone arthroscopic single-bundle autologous hamstring reconstruction of the anterior cruciate ligament (ACL) using a transtibial (TT) or an anteromedial portal (AMP) approach to drill the femoral tunnel.
METHODS: Ninety-four patients were operated on in 2005 and 2006, and 88 (93.6%) (73 men, 15 women) were evaluated subjectively and objectively, using the Lysholm and International Knee Documentation Committee (IKDC) scores, manual maximum displacement test with a KT-1000 arthrometer (MEDmetric, San Diego, CA) and the Lachman test, and rotational instability with the pivot shift test. Degenerative changes were assessed on radiographs according to the Fairbank classification.
RESULTS: The median age at operation was 29 years (20 to 43 years; SD, 5.4) in the TT group 1 and 28 years (19 to 45 years; SD, 6.1) in the AMP group 2. At the last appointment, the 2 groups

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Velocity- and Power-Load Relationships of the Bench Pull vs. Bench Press Exercises.

Int J Sports Med. 2013 Jul 30;

Authors: Sánchez-Medina L, González-Badillo JJ, Pérez CE, Pallarés JG

Abstract
This study compared the velocity- and power-load relationships of the antagonistic upper-body exercises of prone bench pull (PBP) and bench press (BP). 75 resistance-trained athletes performed a progressive loading test in each exercise up to the one-repetition maximum (1RM) in random order. Velocity and power output across the 30-100% 1RM were significantly higher for PBP, whereas 1RM strength was greater for BP. A very close relationship was observed between relative load and mean propulsive velocity for both BP (R2=0.97) and PBP (R2=0.94) which enables us to estimate %1RM from velocity using the obtained prediction equations. Important differences in the load that maximizes power output (Pmax) and the power profiles of both exercises were found according to the outcome variable used: mean (MP), peak (PP) or mean propulsive power (MPP). When MP was considered, the Pmax load was higher (56% BP, 70% PBP) than when PP (37% BP, 41% PBP) or MPP (37% BP, 46% PBP) were used. For each variable there was a broad range of loads at which power output was not significantly different. The differing velocity- and power-load relationships between PBP and BP seem attributable to the distinct muscle architecture and moment arm levers involved in these exercises.

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Fear of reinjury (kinesiophobia) and persistent knee symptoms are common factors for lack of return to sport after anterior cruciate ligament reconstruction.

Arthroscopy. 2013 Aug;29(8):1322-9

Authors: Flanigan DC, Everhart JS, Pedroza A, Smith T, Kaeding CC

Abstract
PURPOSE: Our purpose was to determine patient-cited reasons for lack of return to sport after anterior cruciate ligament reconstruction.
METHODS: All patients who underwent primary or revision anterior cruciate ligament reconstruction by 2 surgeons from 2007 to 2008 (N = 171) were contacted for a telephone interview. Patients who did not return to preinjury levels by self-assessment were then asked to cite contributing factors from a predetermined list. These included non-knee-related life events, persistent knee symptoms, fear of reinjury (kinesiophobia), and choice-related options (such as lack of interest or time).

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Allometric Scaling and Predicting Cycling Performance in (Well-) Trained Female Cyclists.

Int J Sports Med. 2013 Jul 30;

Authors: Lamberts RP, Davidowitz KJ

Abstract

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Regrowth of the psoas tendon after arthroscopic tenotomy: a magnetic resonance imaging study.

Arthroscopy. 2013 Aug;29(8):1308-13

Authors: Márquez Arabia WH, Gómez-Hoyos J, Llano Serna JF, Aguilera Bohorquez B, Nossa Barrera JM, Márquez Arabia JJ, Clavijo Rodríguez MP, Gallo Villegas JA

Abstract
PURPOSE: The purpose of this study was to evaluate whether the psoas tendon regenerates after arthroscopic tenotomy through the central compartment of the hip in patients with internal snapping hip.
METHODS: Twenty-seven patients with a snapping hip, aged 18 to 54 years (mean, 37.47 years), underwent arthroscopic tenotomy through the central compartment of the hip; all patients had symptomatic femoroacetabular impingement as well. The degree of regeneration was evaluated by preoperative and postoperative measurements of the tendon perimeter with a magnetic resonance imaging protocol in patients with more than 6 months' follow-up. In addition, function was assessed preoperatively and postoperatively with the Western Ontario and McMaster Universities Osteoarthritis Index score. Postoperative active flexion force was graded clinically between 1 and 5 with the Medical Research Council score.

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The Validity of Commonly Used Adipose Tissue Body Composition Equations Relative to Dual Energy X-ray Absorptiometry (DXA) in Gaelic Games Players.

Int J Sports Med. 2013 Jul 30;

Authors: Doran DA, Mc Geever S, Collins KD, Quinn C, McElhone R, Scott M

Abstract