Squeeze Test Research Articles

Exploring the Link Between Calcaneal Apophysis Maturation and Heel Pain in Youth Baseball Players.

Calcaneal apophysitis is the most common cause of heel pain in children and adolescents. However, the relationship between skeletal maturity and heel pain in the specific youth cohort is unclear. To clarify the relationship between the maturity stages of the calcaneal apophysis and heel pain in youth baseball players. Cross-sectional study; Level of evidence, 3. A total of 336 youth male baseball players participated in this study. Ultrasound scanning of the calcaneal apophysis was performed along the longitudinal line connecting the middle of the Achilles tendon, the middle of the calcaneus, and the second toe, between the proximal calcaneal edge and the medial calcaneal tubercle. The authors classified the maturity of the calcaneal apophysis into 5 stages, from nonpresence of the apophysis (stage 1) to complete fusion (stage 5). The diagnosis of heel pain was based on subjective report of feeling pain on the squeeze test. The relationship between the maturity stages and physical characteristics was investigated using 1-way analysis of variance or the Kruskal-Wallis test, and the relationship between the maturity stages and heel pain was investigated using the chi-square test. Of the 336 players, 49 had heel pain, for a prevalence of 14.6%. Eighteen (5.4%) players had unilateral heel pain, and 31 (9.2%) players had bilateral heel pain. There were no significant differences in the maturity stages of the calcaneal apophysis between the players with no heel pain and those with heel pain. However, no players had heel pain during stage 5, when the calcaneus had completed its maturation. The prevalence of heel pain was 14.6% in Japanese youth male baseball players. There was no relationship between the maturity stages of the calcaneal apophysis and heel pain. Heel pain that could be associated with calcaneal apophysitis did not occur during stage 5, when maturation of the calcaneal apophysis was complete.

Investigating Skeletal Muscle Pump Function Using Thigh EMG, Thigh NIRS, And Stroke Volume Data In The FRAILMatics Physiological Cohort

Abstract Background The pioneering female physiologist Frances Hellebrandt first highlighted the significance of the skeletal muscle pump in circulation in the 1930s. However, the mechanisms underlying the muscle pump's function remain elusive, particularly in older individuals. It is thought that during muscle contraction, increased intramuscular pressure facilitates the expulsion of blood from the muscle's veins, aiding venous return. This contraction-induced pressure gradient assists in pushing blood towards the heart, increasing preload, and subsequently stroke volume (SV). In this study we investigated muscle pump activity using continuous measurements of thigh muscle activity, thigh total haemoglobin concentration (Hb), and cardiac SV. Methods 22 individuals (aged 70.8±5.3 years, 77.3% female) recruited from a Falls and Syncope Unit (St James’s Hospital, Dublin) underwent non-invasive measurements of Hb (NIRS PortaLite, Artinis Medical Systems, The Netherlands), electromyography (EMG) (Shimmer3, Research Ltd, Ireland), and SV (Finapres Nova, Finapres Medical Systems, The Netherlands) during a 10-second thigh squeeze test. Pre-processing involved data quality checks, alignment, and resampling. 60-second regions of interest were extracted, normalised, and processed using MATLAB (R2023a, TheMathWorks, Inc., Natick, MA, USA). Cross-correlation and Granger causality analyses were conducted to explore relationships between signals. Results Thigh Hb and EMG signals lagged 8.4 and 8.5 seconds behind SV, respectively. Granger Causality analysis revealed a significant causal relationship from both Hb and EMG to SV in 68% of participants at measured lags. Conclusion The observed ~8.5-second lag between thigh measurements and SV implies a plausible temporal relationship between muscle activation and venous return, further supported by significant causal relationships found in a substantial portion of participants using Granger causality analysis. These findings underscore the importance of continued research in this area, not only for advancing our understanding of physiological mechanisms but also for informing potential clinical applications aimed at optimising cardiovascular health and function.

Evaluation of basalt fibers and nanoclays to enhance extrudability and buildability of 3D-printing mortars

A study of the rheological and fresh mechanical properties of fly ash-cement 3D printing (3DP) mortars with six types of nanoclays (NC) as rheology modifiers, two sepiolites, three attapulgites and one bentonite, and reinforced with short basalt fibers (BF) was carried out. Fresh mortar properties were evaluated with a flow table test (FTT), cylindrical slump test (CST) and cone-penetration test (CPT) on samples left at rest and stirred before testing. Squeeze test (SQT) was carried out on samples cast-in-the-mold and 3D printed to compare the effects of 3DP on the fresh mechanical behavior. Extrudability was assessed with an electrical barrel extrusion device. NC and BF enhanced mortar cohesion by preventing water drainage and improving material extrudability. NC increased shear yield stress (τ0) over time on samples left at rest, enhancing reversible thixotropy. Besides, NC required larger amounts of superplasticizer, increasing open time windows. Among NC, Sepiolite in powder form showed the best fresh mechanical performance on 3DP samples. BF enhanced extrudability due to the bridging effect but also shows mechanical synergies with some NC. 3DP samples showed lower compressive yield stress and Young modulus evolution over time (σ˙ and Ė) than cast-in-the-mold samples, due to their layered structure.

Gastrocnemius Strain: A Case Study

Gastrocnemius Strain is a painful condition of partial tearing of the medial belly of the gastrocnemius, caused by overstretching the muscle by concomitant ankle dorsiflexion and full knee extension. Contributory factors are muscle fatigue and degenerative changes [1]. The purpose of the case study is to present a case of Gastrocnemius Strain, who underwent physiotherapy department. The 35 years male was having pain in the left calf muscle for last eight days. According to the patient the pain started while running in the field for practicing for an upcoming sports event. He felt sudden acute pain in the left leg, followed by swelling after he placed his left heel on the field. He went to consult a physiatrist in a private hospital nearby. During examination, in clinic there was swelling, tenderness around the middle & lower part of left Gastrocnemius muscle. There was increase pain in the leg during dorsiflexion of left foot, both active & passive. He was unable bear full weight on the affected limb. Measurement of right & left Gastrocnemius muscle was 38 cm & 40 cm respectively, from 8 cm below tip of patella. The Thompson squeeze test was negative though it was painful. He was walking in non-weight bearing pattern using walker. M.R.I report suggested, there was fluid collection in left calf muscle, between Soleus & medial head of Gastrocnemius, most prominent at the myotendinous junction. There was also tear with oedema in anterior fibres of left mid & distal part of lateral head of Gastrocnemius & anterior fibres of distal part of medial head of Gastrocnemius. The patient was treated with low-level laser therapy for 15 sittings & was advised to apply Cryotherapy followed by crepe bandage application. After completion of treatment, there was minimum tenderness or pain in the affected area. The patient was able to bear full weight on the left limb. He was advised to continue exercises for strengthening Gastrocnemius & Soleus muscle at home as demonstrated. Pain was measured using V.A.S on the first day before & last day after treatment. Keywords: Gastrocnemius Strain, low-level laser therapy, clinical case, calf muscle injury, Cryotherapy..

Nano-welded carbon nanotube sponges for efficient oil spill remediation

Carbon nanotube (CNT) sponges are valuable for oil spill cleanup, yet their scalable production poses a notable challenge. This research presents an innovative and an energy efficient method to create CNT sponges from CNT sheets, enhancing their oil absorption capacity and mechanical durability. The method involves a direct foaming approach employing hydrazine hydrate and ethanol to induce porosity within densely arranged CNT films. Use of hydrazine generates voids in the CNT network and functions to reduce any surface oxygen functionalities, which impart it superhydrophobicity, as depicted by water contact angle of 142°. To enhance the mechanical properties of the CNT sponge, nanoscale welding is implemented using amorphous carbon, which resulted in 109% and 113% improvement in the ultimate compressive strength and modulus, respectively. The sponge demonstrated a remarkable oil absorption capacity exceeding 200 times its weight, along with an impressive absorption capability of 130 times for organic solvents like dichloromethane and chloroform, marking a substantial enhancement compared to existing alternatives. Moreover, the sponge's reusability was assessed through oil squeezing tests, retaining its performance across five cycles. The material's unique properties make it a promising solution for various environmental and industrial applications.

Reliability of Percutaneous Achilles Tenotomy in the Treatment of Idiopathic Clubfoot.

Talipesequinovarus is a congenital ankle/foot malformation that commonly affects newborns. In its treatment using the Ponseti method, an Achilles tenotomy is frequently needed to correct residual equinus deformity. Percutaneous (PC) tenotomy is the most commonly used technique and needs to be thoroughly evaluated. The question we needed to answer was: "Does PC Achilles tenotomy result in complete tendon sectioning"? This clinical study included 56 idiopathic clubfeet in 36 patients who presented during the first 6 months of life and were treated with Ponseti manipulation and casting followed by PC Achilles tenotomy. PC tenotomy was done under general anesthesia, and Thompson's calf squeeze test was performed intraoperatively just after tenotomy. In case of a negative test (ie, ankle plantar flexion with calf squeeze), the percutaneous incision was extended to assess the cause of the negative test. Forty-nine feet (87.5%) had a complete tenotomy, as evidenced by a positive Thompson's calf squeeze test. While 7 feet (12.5%) showed a negative test, and therefore the percutaneous incision was extended and all were found to have an incompletely divided Achilles tendon. The tendons were then completely divided, after which Thompson's test became positive in all. Percutaneous Achilles tenotomy is a reliable procedure, but was found to result in incomplete tendon sectioning in 12.5% of cases, affecting the range of ankle dorsiflexion. Thompson's squeeze test is reliable in picking up cases of incomplete tenotomy after the PC technique, and in these cases the incision should be extended for complete sectioning. Level I.

Eyelid Malposition, the Basic Examination

Abstract
 Introduction & Objectives : Eyelid malposition is when the eyelids become abnormally positioned due to various causes. The disorder is not aesthetically-pleasing and can lead to visual and ocular problems, which can be serious. The main cause of eyelid malposition is aging, as the tissues surrounding the eyes relax as we age. It can also occur as a result of paralysis of the facial nerve (Bell's palsy), trauma, scarring, and surgery
 Methods : The types of eyelid malposition are: 1)Ptosis, a drooping upper eyelid, with difficulty in opening the eyelid voluntarily. In some cases, it is so severe that the eyelid covers the axis of the pupil and hinders correct vision in the affected eye. 2)Entropion, inward turning of the eyelid towards itself. It may be the lower eyelid or the upper eyelid, causing the eyelashes to rub against the cornea and eye surface, and 3)Ectropion, is the rotation towards the outside of the lower eyelid. Very often, it causes the tears to build up at the mid point without being able to drain and the patient notices their eye watering.
 Results : There are some examination for each type eyelid malpositions, like for ptosis: fissure palpebral vertical, fissure palpebral horizontal, levator function, margin limbal distance, margin reflex distance, and bell’s phenomenon. Examination for entropion and ectropion including squeeze test, distraction test, snap and snap-back test, medial and lateral canthal laxity.
 Conclusion : Careful examination is required to diagnose and manage eyelid malposition.

Clinical features of patients with hands arthralgia referred from primary care physicians to rheumatologists: A cohort study

PurposeEarly referral of patients with suspicious of rheumatoid arthritis (RA) has an impact on prognosis. Our study aimed to evaluate the clinical characteristics of patients with hands arthralgia who were referred from primary care physicians (PCP) to the rheumatologist. MethodsA descriptive, observational, prospective cohort study was performed. We included patients who visited a PCP for the first time for hands arthralgia. Demographics and the European Alliance of Associations for Rheumatology criteria for arthralgia suspicious for progression to RA plus seven complementary questions, the time to referral, the pressure needed to provoke pain with an automatic squeeze test machine in the metacarpophalangeal joints of both hands, and the diagnoses established at the last review of medical charts from patients on follow-up were documented. The primary outcome was the referral to a rheumatologist. ResultsA total of 109 patients were included. The mean age was 49.9 years, 81.6% were women. 30.3% were referred to the rheumatologist. The time to referral was a median of 38 days. The main clinical characteristics associated with referral to the rheumatologist were the “most severe symptoms are present after midnight” (OR=6.29) and the “difficulty with making a fist” (OR=3.67). An isolated “positive squeeze test of metacarpophalangeal joints” was not associated with a referral to the rheumatologist. ConclusionsAmong patients with hands arthralgia who attended PCP, those with most severe symptoms after midnight and difficulty making a fist were more likely to be referred to the rheumatology clinic. Isolated positive squeeze tests are not a parameter for referral, it should only be performed if arthralgia is clinically suspected.

Subtle Syndesmotic Instability.

Latent or subtle syndesmotic instability is defined as an injury to the syndesmosis which is not apparent on static radiographs of the ankle. Syndesmotic injuries have also been referred to as high ankle sprains. Injury to the syndesmosis typically occurs with collision sports and often involves an external rotation force to the ankle. Diagnosis can be delayed because of negative initial imaging studies. Physical examination tests including the external rotation test, proximal squeeze test, and fibular shuck test can assist in the diagnosis. Advanced imaging modalities such as MRI and weight-bearing CT have been studied and can provide prognostic indications for management, although arthroscopic stress evaluation remains the benchmark for diagnosis. Both surgical and nonsurgical management techniques have been described, which can assist patients in returning to their preinjury level of function.

Inter- and intra-session variability of compression strain gauge for the adductor groin squeeze test on soccer athletes.

The importance of hip adductor strength for injury prevention and performance benefits is well documented. The purpose of this study was to establish the intra- and inter-day variability of peak force(PF) of a groin squeeze protocol using a custom-designed compression strain gauge device. Sixteen semi-professional soccer players completed three trials over three separate testing occasions with at least 24-h rest between each session. The main findings were that the compression strain gauge was a reliable device for measuring PF within and between days. All intraclass correlations were higher than 0.80 and coefficients of variations were below 10% across the different sessions and trials. Due to the information gained through the compression strain gauge, the higher sampling frequency utilized, portability, and the relatively affordable price, this device offers an effective alternative for measuring maximal strength for hip adduction.

A systematic review of studies on the diagnostics and classification system used in surgically treated, acute, isolated, unstable syndesmotic injury: a plea for uniform definition of syndesmotic injuries.

To this day, diagnostic standards and uniform definition for acute, isolated syndesmotic injuries are missing. The aim of the current study was to conduct a systematic review of the classification systems and diagnostics currently applied and to propose a best evidence diagnostic approach. Medline (PubMed), Scopus, Cochrane Central Register of Controlled Trials, and Embase were searched from inception to June 5, 2022, for studies reporting the outcome of surgically treated acute, isolated syndesmotic injuries. First, all classifications used in the eligible studies were identified and illustrated according to the individual syndesmotic structures injured. Second, the indication for surgery and stabilization, based on the diagnostics applied and the time point assessed (pre- or intra-operatively), was analyzed, including the applied cutoff criteria. Ten out of 4190 studies, comprising 317 acute ligamentous syndesmotic injuries, met the inclusion criteria. Seven studies facilitated one of the three different classification systems (Calder, West Point, or Sikka classification). Eight studies based their indication for surgery on a combination of clinical and radiographic examinations and two on radiographs only. The most applied clinical tests were the external rotation stress test and squeeze test. The most common radiologic diagnostics were plain radiographs and MRI. Intraoperatively, instability was verified most commonly using arthroscopy. Current classifications and diagnostics for syndesmotic injuries are heterogeneous, often cannot be attributed to the ligaments injured. An evidence-based diagnostic algorithm based on noninvasive diagnostics and an anatomy-based classification for acute syndesmotic instability is presented.

Development and yield of cormels gladiolus plant stimulated with paclobutrazol

The application of paclobutrazol compounds in several types of horticultural crops is effective in stimulation the growth and development of tubers. Gladiolus plant (Gladiolus hybridus) is one of the ornamental plants that produce bulbs or corm and cormels as reproductive organs. The development of corm and cormels gladiolus plants has been stimulated by the concentration of paclobutrazol compounds through soil surface flushing after flowers are harvested, namely at the age of 66 days after planting. Using the single factor Randomized Block Design method with four concentration levels of pacrobutrazol compounds as treatment, namely, 0 mgL-1, 50 mgL-1, 100 mgL-1, and 150 mgL-1. Corm and cormels development was observed destructively in sample plants at regular intervals of five days as many as eight times, starting after a week of watering consisting of variable responses to the development of the corm diameter, the development of the number of cormels, the development of the diameter of the cormels, and the development of the plant root ratio. The data obtained are suspected according to regression fingerprints, and the curves obtained are compared with squeeze and alignment tests. The results showed that the diameter of the corm, the diameter of the cormels, and development of the plant root ratio treated with paclobutrazol compounds were better than without treatment, but the application of paclobutrazol treatment had no effect on the number of cormels. Obtained cormels with a diameter of > 1.5 cm is the desired final goal in this study, because the cormels have economic value as planting material to produce larger corm, then the next can be used as planting material to produce flowering corms.

Minimally Invasive Chevron Akin Osteotomy: Preoperative Planning Using the Radiographic First-Ray Squeeze Test.

Recognizing preoperative first-ray hypermobility is important to planning hallux valgus (HV) surgery. A recent study showed the minimally invasive chevron Akin (MICA) osteotomy increased varus displacement of the proximal fragment of the first metatarsal osteotomy. The present study aims to evaluate the ability of the radiographic first-ray squeeze test to predict the varus displacement of the proximal fragment of the first metatarsal osteotomy when performing the MICA procedure. A prospective case series of patients with moderate to severe HV who underwent MICA was performed. The HV deformity correction was analyzed by comparing the preoperative and 12-week postoperative hallux valgus angle (HVA) and the intermetatarsal angle between the first and second rays (1-2 IMA). The ability of the radiographic first-ray squeeze test to predict the varus displacement of the first metatarsal was done by comparing the preoperative 1-2 IMA measured in the AP radiographic first-ray squeeze test (IMA-ST) with the intermetatarsal angle between the second metatarsal and the axis of the first metatarsal osteotomy proximal fragment (IAPF) taken 12 weeks postoperatively. Between July 2022 and May 2023, a total of 39 feet in 28 patients underwent MICA. The mean IMA improved from 13.8 (SD = 2.2) to 3.8 degrees (SD = 1.5) (P < .001), and the mean HVA improved from 27.8 (SD = 6.1) to 4.9 degrees (SD = 2.5) (P < .001). A linear regression analysis revealed that IMA-ST is highly associated with the 12 week assessed IAPF (P < .001). The preoperative radiographic first-ray squeeze test appears to predict with high fidelity the varus displacement of the proximal fragment of the first metatarsal that can occur after the MICA procedure.Level of Evidence: Level III, prospective cohort study.

Intrarater Reliability of an Adductor Squeeze Test With Professional Basketballers

Groin injuries are common in basketball. Reduced adductor strength is a risk factor for injury, so monitoring strength can be important for injury prevention. This research assessed the reliability of an adductor strength test in male professional basketballers in preseason. Strength was tested using a sphygmomanometer between the knees at 0°, 45°, and 90° of hip flexion, in two trials. There was no difference in mean scores between trials. All conditions had moderate or higher intrarater reliability, with 45° hip flexion the most reliable. This test can be used to identify and monitor players with increased adductor injury risk.

Distal forearm squeeze test for the diagnosis of digital flexor tendon injuries

BackgroundThe forearm/wrist squeeze/compression test has been used to examine digital flexor tendon injuries with varied names. Furthermore, the test has not been minutely described and its mechanism remains unclear. We renamed the test the “distal forearm squeeze test”. The purpose of this study was to elaborate on the test and elucidate the mechanism.MethodsTwo patients with digital flexor tendons ruptured in zone 3 and zone 1 respectively and 50 outpatients with intact digital tendons underwent the test. Then the test was performed on 3 chickens under 4 conditions. First, when the digital flexor and extensor tendons were all intact. Second, after the flexor tendons of the third toe were transected. Third, after the flexor tendons of all toes of the foot were transected. Finally, after the flexor and extensor tendons of all toes of the foot were transected.ResultsIn the patient with digital flexor tendons ruptured in zone 3, the test showed that the injured digit was flexed slightly while the uninjured digits were flexed obviously. In the patient with digital flexor tendon ruptured in zone 1, after separate stabilization of the proximal interphalangeal (PIP) joints of the injured and uninjured fingers in extension, the test showed that the distal interphalangeal joint of the patient’s injured finger had no response, while those of the uninjured fingers were flexed. All 50 subjects showed clenched or half-clenched hands in response to the test. The test showed that all toes were flexed when the digital tendons of the chicken were intact. All toes were flexed except the third toe after the flexor tendons of the third toe were transected. All toes were extended after all the digital flexor tendons were transected. All toes had no response after all the digital flexor and extensor tendons were transected.ConclusionsThe distal forearm squeeze test is valuable in examining digital flexor tendon injuries. If only the flexor digitorum profundus tendon is examined, the PIP joint of the finger should be stabilized in extension during the test.

A Case of Ochronosis with Spontaneous Rupture of Bilateral Achilles Tendon

A 39-year-old male presented to the orthopaedic OPD with complaints of difficulty in walking since 3 months associated with pain over bilateral heel region. The pain was also associated with intermittent popping sound from bilateral ankle joints. Local examination revealed bilateral loss of Achilles tendon contour along with increased range of dorsiflexion and tenderness. Thompson squeeze test and O’Brien needle test were positive indicating rupture of Achilles tendon.

3D flow and fibre orientation modelling of compression moulding of A-SMC: simulations and experimental validation in squeeze flow

Sheet Moulding Compound (SMC) based composites have a large potential in industrial contexts due to the possibility of achieving comparatively short manufacturing times. It is however necessary to be able to numerically predict both mechanical properties as well as manufacturability of parts.In this paper a fully 3D, semi-empirical model based on fluid mechanics for the compression moulding of SMC is described and discussed, in which the fibres and the resin are modelled as a single, inseparable fluid with a viscosity that depends on volume fraction of fibres, shear strain rate and temperature. This model is applied to an advanced carbon-fibre SMC with a high fibre volume fraction (35%). Simulations are run on a model of a squeeze test rig, allowing comparison to experimental results from such a rig. The flow data generated by this model is then used as input for an Advani-Tucker type of model for the evolution of the fibre orientation during the pressing process. Numerical results are also obtained from the software 3DTimon. The resulting fibre orientation distributions are then compared to experimental results that are obtained from microscopy. The experimental measurement of the orientation tensors is performed using the Method of Ellipses. A new, automated, accurate and fast method for the ellipse fitting is developed using machine learning. For the studied case, comparison between the experimental results and numerical methods indicate that 3D Timon better captures the random orientation at the outer edges of the circular disc, while 3D CFD show larger agreement in terms of the out-of-plane component. One of the advantages of the new image technique is that less work is required to obtain microscope images with a quality good enough for the analysis.

Is rheumatoid arthritis a neglected comorbidity in neurofibromatosis type 1?

Aims: Neurofibromatosis type 1 (NF-1) is a relatively rare disorder with autosomal dominant inheritance. Despite current reports highlighting the association between NF-1 and some rheumatic diseases (e.g., systemic lupus erythematosus, juvenile idiopathic arthritis, ankylosing spondylitis, and antiphospholipid antibody syndrome), the literature seems to have missed focusing on its relationship with rheumatological disorders. Hence, the present study attempted to explore definite NF-1 molecular genetic mutation in association with accompanying rheumatic diseases, particularly rheumatoid arthritis.&#x0D; Methods: The patients (n=23) aged 18 years who were diagnosed with NF-1 genetic mutation between 2010-2022 in the medical genetics department of our university were recruited for medical examination regarding rheumatic disorders in our rheumatology outpatient clinic. &#x0D; Results: There were a total of 23 patients in this study, 14 (60.9%) males and 9 (39.1%) females, with a mean age of 27.4±9.2 years (18-51 years). As a result, 4 (17.3%) patients were diagnosed with rheumatoid arthritis (RA), 3 with seropositive RA, and one with seronegative RA. Of the diagnoses, two were established RA, and two were early RA. All patients with RA had a positive metacarpophalangeal joint (MCP) squeeze test and experienced pain in bilateral hands and wrists and morning stiffness for more than 45 min.&#x0D; Conclusion: While the community prevalence of RA is about 1%, it is noteworthy that we detected RA in 17.3% of our patients. In the follow-up of patients with NF-1, routine examinations for pain in bilateral hands and wrists, morning stiffness over 45 minutes, and positivity of the MCP squeeze test are thought to allow early diagnosis of RA and, thus, relevant therapies.

Hagos And Copenhagen Squeeze Test Score Changes During Season In Division I Male Soccer Players

Hagos And Copenhagen Squeeze Test Score Changes During Season In Division I Male Soccer Players

English

Objective: To evaluate adductor strength and groin function in high level rink hockey players and its relationship with groin pain in the previous season. Material and method: A cross-sectional study was performed where hip/groin strength and function was assessed via 5 seconds Squeeze Test and Hip and Groin Ouctome Score in 11 high level rink hockey players. Results: Overall prevalence for groin pain was 81.8% (54% of the participants suffered groin pain during the previous season), and 18.2% suffered time-loss groin pain. Mean strength in the 5SST was 254.68N (3.25Nm/Kg) and HAGOS questionnaire reached 90/100 points in the whole sample. Similar adductor strength values were observed between healthy athletes and previously injured who suffered time-loss groin pain (P=0.261-0.948; g: 0.04-0.85). Statistically significant differences were found for the following HAGOS subscales: Pain, function, sports and recreational activities, and quality of life between groups (P=0.005-0.042; g: 0.34-2.65; r: 0.3-0.61). Conclusion: More than a half of the participants suffered groin pain, of which one third suffered time-loss groin pain. Function assessed via HAGOS seems to be the main proxy that discriminates between groups. Medical staff should implement this questionnaire to detect and avoid the progression of this injury