PMID- 10513063
OWN - NLM
STAT- MEDLINE
DCOM- 19991229
LR  - 20191103
IS  - 0041-8781 (Print)
IS  - 0041-8781 (Linking)
VI  - 54
IP  - 2
DP  - 1999 Mar-Apr
TI  - Isokinetic assessment of the flexor-extensor balance of the knee in athletes with 
      total rupture of the anterior cruciate ligament.
PG  - 35-8
AB  - The purpose of this study was to assess the flexor-extensor group of muscles of 
      the knee in young athletes diagnosed with a total rupture of the anterior 
      cruciate ligament (ACL). Eighteen knees of 18 athletes (14 men and 4 women) with 
      an average age of 21.6 years (range 16-32 years) were assessed with a Cybex 6000 
      model isokinetic apparatus. The average internal between occurrence of the injury 
      and assessment was 10.2 months (range 2-48 months). There was an associated 
      meniscal injury in eight of the knees. Athletes with any other kind of associated 
      injury, limitation, or blockage of the movement of the joint, significant pain 
      during the exam, or interval between injury and exam of less than two months were 
      excluded from the study. The parameters studied were the peak torque-velocity and 
      flexor-extensor relationships at the constant angular velocities of 60 
      degrees/sec and 240 degrees/sec. Previous warming-up was done by means of an 
      ergometric bicycle and adaptation with 3 submaximal repetitions. The 
      contra-lateral side, which presented no injury, was used as control. Peak torque 
      (PT) at the constant velocity of 60 degrees/sec was greater than that at 240 
      degrees/sec for knees with and without injuries. However, there was no 
      significant difference between the injured and uninjured sides at 60 degrees/sec 
      or at 240 degrees/sec. The average value for the flexor-extensor relationship at 
      60 degrees/sec on the injured was 60% ((6), compared to 57% ((10) on the 
      contra-lateral side. At 240 degrees/sec, the average value was 75% ((10) on the 
      injured side, and 65% ((12) on the contra-lateral side. In conclusion, despite 
      the complete rupture of the ACL of one knee, the average values for the 
      flexor-extensor relationship were similar on the injured and uninjured sides at 
      the velocity of 60 degrees/sec. As the velocity increased, an increase in the 
      values for the flexor-extensor relationship of the knee also occurred, indicating 
      a tendency of the performance of the flexor muscle group to approach that of the 
      extensor muscle group, and this tendency was more pronounced on the side of the 
      injury.
FAU - Terreri, A S
AU  - Terreri AS
AD  - Departamento de Ortopedia e traumatologia da Faculdade de Medicina da 
      Universidade de Sao Paulo.
FAU - Ambrosio, M A
AU  - Ambrosio MA
FAU - Pedrinelli, A
AU  - Pedrinelli A
FAU - Albuquerque, R F
AU  - Albuquerque RF
FAU - Andrusaitis, F
AU  - Andrusaitis F
FAU - Greve, J M
AU  - Greve JM
FAU - Carazzato, J G
AU  - Carazzato JG
FAU - Amatuzzi, M M
AU  - Amatuzzi MM
LA  - eng
PT  - Journal Article
PL  - Brazil
TA  - Rev Hosp Clin Fac Med Sao Paulo
JT  - Revista do Hospital das Clinicas
JID - 0415246
SB  - IM
MH  - Adolescent
MH  - Adult
MH  - Anterior Cruciate Ligament/*physiopathology
MH  - *Anterior Cruciate Ligament Injuries
MH  - Athletic Injuries/*physiopathology
MH  - Female
MH  - Humans
MH  - Knee Joint/physiopathology
MH  - Male
MH  - *Range of Motion, Articular
EDAT- 1999/10/08 00:00
MHDA- 1999/10/08 00:01
CRDT- 1999/10/08 00:00
PHST- 1999/10/08 00:00 [pubmed]
PHST- 1999/10/08 00:01 [medline]
PHST- 1999/10/08 00:00 [entrez]
AID - 10.1590/s0041-87811999000200001 [doi]
PST - ppublish
SO  - Rev Hosp Clin Fac Med Sao Paulo. 1999 Mar-Apr;54(2):35-8. doi: 
      10.1590/s0041-87811999000200001.