Quadriceps and hamstring muscles strength differences in adolescent and adult recreational athletes 6 months after autograft bone–patellar-tendon–bone anterior cruciate ligament reconstruction: A retrospective study

IF 1.6 4区医学 Q3 ORTHOPEDICS

Knee Pub Date : 2025-02-26 DOI:10.1016/j.knee.2025.02.008

Marco Turati , Erik Benedettini , Dai Sugimoto , Marco Crippa , Cristiano Alessandro , Valentina Bacchin , Massimiliano Piatti , Fabio Albanese , Franck Accadbled , Luca Rigamonti , Giovanni Zatti , Marco Bigoni

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引用次数: 0

Abstract

Background

Knee muscle strength recovery after anterior cruciate ligament reconstruction (ACLR) is crucial for a safe return to sport (RTS) but it is poorly described in the adolescent population. Therefore, we compared the knee muscle strength at 6 months post-surgery in adults and adolescents. We hypothesized a greater muscular strength in adolescents 6 months after ACLR.

Methods

This was a retrospective analysis of 55 adolescents (13–18 years old) and 76 adults (19–39 years old) who underwent ACLR with autograft bone–patellar-tendon–bone (BPTB), subjected to isokinetic tests 6 months after surgery. The following outcomes were analyzed: (1) the maximum torque of hamstrings (H) and quadriceps (Q) during flexion and extension at 30°/s normalized by body weight; (2) hamstrings to quadriceps strength ratio (HQ ratio); (3) injured to uninjured leg muscle strength ratio (limb-symmetry index, LSI).

Results

Both adults and adolescents produced lower Q torque with the injured leg compared with uninjured, but similar H torque. In adolescents, the injured Q torque and the Q-LSI were higher compared with adults. In both populations, the Q-LSI was lower than the H-LSI and the HQ ratio in the injured leg was higher compared with uninjured. Adolescents showed a lower HQ ratio in injured legs.

Conclusions

At 6 months after ACLR both adolescents and adults did not recover Q strength in the injured leg. However, adolescents showed larger Q strength compared with adults. The HQ ratio analysis showed that 6 months after surgery both groups are not ready for a safe RTS.

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来源期刊

Knee 医学-外科

CiteScore

3.80

自引率

5.30%

发文量

171

审稿时长

6 months

期刊介绍： The Knee is an international journal publishing studies on the clinical treatment and fundamental biomechanical characteristics of this joint. The aim of the journal is to provide a vehicle relevant to surgeons, biomedical engineers, imaging specialists, materials scientists, rehabilitation personnel and all those with an interest in the knee. The topics covered include, but are not limited to: • Anatomy, physiology, morphology and biochemistry; • Biomechanical studies; • Advances in the development of prosthetic, orthotic and augmentation devices; • Imaging and diagnostic techniques; • Pathology; • Trauma; • Surgery; • Rehabilitation.