Chronic exertional compartment syndrome (CECS) causes activity-related pain and neurologic symptoms due to increased intracompartmental pressure during exercise. Fasciotomy is commonly performed when nonoperative treatment fails, but short-term postoperative complications remain poorly characterized. This retrospective cohort study evaluated patients aged ≥14 years who underwent elective open fasciotomy for CECS at a single academic medical center between 2000 and 2024. Demographics, surgical characteristics, postoperative complications, and reoperations within 90 days were recorded. Twenty-eight patients underwent 44 operations involving 56 lower extremities, with a median age of 21 years. Eleven procedures (19.6%) were repeat fasciotomies. Postoperative complications occurred in 17 extremities (30.3%). Infection and/or poor wound healing occurred in 12 (21.4%), including five cases of superficial cellulitis, six superficial abscesses with poor wound healing, and one case of serous drainage. Five extremities (8.9%) developed symptomatic hematomas, one patient (1.8%) developed a deep venous thrombosis, and four (7.1%) experienced temporary nerve-related symptoms without permanent deficit. Five patients required reoperation. Open fasciotomy for CECS was associated with meaningful early postoperative morbidity, although most complications resolved without surgical intervention, emphasizing the importance of preoperative counseling regarding recovery and surgical risks
Monitoring patellar tendon stiffness may provide new insights into tendon adaptation due to loads and pathology. This 12-week prospective observational pilot study aimed to determine the feasibility of monitoring patellar tendon stiffness in relation to training load, pain, and function in male talent volleyball players. Feasibility outcomes included willingness to participate and retention rate, measurement completeness, and adverse events. Willingness to participate and retention rate were 100% in the included 15 volleyball players. Measurement completeness was below the pre-defined success criteria: 72% for stiffness before training and 66% after training; 52% for internal load and 38% for external load; 71% for experienced pain measurements; and 68% for questionnaire completion. This feasibility study indicates that there are several challenges in obtaining a complete data set when monitoring talented volleyball players. Communication between researcher-coach-athlete, feedback on collected data, and education on the importance of maintaining (tendon) health can be considered important factors to overcome these challenges.
This study aimed to examine whether hip deformity has already developed in Japanese male freshman collegiate long-distance runners and to investigate the association with their sports history.A total of 57 elite freshman collegiate long-distance runners participated. We collected sports history data during adolescence using a questionnaire, and hip images were measured using dual-energy X-ray absorptiometry. Cam morphology was defined based on visual scores of the anterior head-neck junction, classified as follows: (i) normal, (ii) flattening, and (iii) prominence. Pincer morphology was defined as a bony prominence or osteophyte-like protrusion at the acetabular rim.Cam morphology based on visual scores was found in 78 of 114 hips (68.4%; 40 right and 38 left). Pincer morphology based on visual scores was found in 73 of 114 hips (64.0%; 39 right and 34 left). There was no significant association between hip deformity and sports participation history ( p >0.58). In an additional exploratory non-athletic cohort, a similarly high prevalence of cam and pincer morphology was observed (cam: 14 of 18 hips [77.8%]; pincer: 13 of 18 hips [72.2%]). These may indicate that factors beyond participation in multidirectional sports, including internal factors, could contribute to hip morphology.
In this cross-sectional study, we aimed to describe preseason hip abduction and adduction strength in Division III cross-country athletes using an externally fixated inline tension dynamometer to report sex-stratified normalized torque values (Nm/kg) and adduction:abduction ratios. Maximal isometric hip abduction and adduction peak forces were measured during a single session and normalized to body mass and moment arm length. Participants included 35 male runners (18.9±0.90 y) and 26 female runners (19.0±1.1 y). Normalized hip torque (Nm/kg) (right/left) for men was: abduction (1.82±0.38/1.84±0.36), adduction (1.98±0.43/1.70±0.41), and adduction:abduction ratio (1.10±0.18/0.92±0.12). Normalized hip torque (Nm/kg) (right/left) for women was: abduction (1.45±0.25/1.43±0.27), adduction (1.40±0.22/1.34±0.28), and adduction:abduction ratio (0.98±0.14/0.95±0.15). By accounting for joint moment arm length and body mass while minimizing measurement variability through rigid external fixation, this study establishes sex-stratified normative isometric hip strength reference profiles in healthy collegiate distance runners to support baseline strength profiling and standardized clinical screening.
Replication projects provide supplementary evidence to reinforce the veracity of novel claims. The Sports Science Replication Centre conducted an international effort to assess the replicability of sports and exercise science research; our research group was assigned to replicate the study by La Monica et al (2016) who reported that larger work-to-rest ratios during repeated cycle sprinting elicited greater oxygen consumption during the rest periods. Participants ( n = 21 men, 23 ± 3 y) completed a familiarization and three experimental visits of 10 maximal 6-second cycle sprints against a resistance of 7.5% body weight separated by one of the three active rest intervals: 24 seconds (1:4 work-to-rest ratio), 18 seconds (1:3), or 12 seconds (1:2). Both V̇O 2work and V̇O 2rest were higher during the 12-second rest interval compared to the 18-second and 24-second rest intervals ( p < 0.01). Changes in V̇O 2rest were similar to the original study, although our observed effect size was lower (partial η 2 = 0.41 compared to the original partial η 2 = 0.75), consistent with typical replication studies. We observed differences in V̇O 2work unlike the original study which found no differences between work-to-rest conditions. This replication attempt was partially successful in corroborating previous findings, supporting that larger work-to-rest ratios lead to decreased sprint performance and larger V̇O 2 demands, with more conservative effect sizes.
