ACL deficiency [Archive] - SomaSimple Discussion Lists

bernard

06-10-2006, 08:06 AM

1: Br J Sports Med. (http://javascript%3Cb%3E%3C/b%3E:AL_get%28this,%20%27jour%27,%20%27Br%20J%20Sports%20Med.%27%29;) 2006 Aug 18; [Epub ahead of print] Related Articles, (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=pubmed_Abstract&db=pubmed&cmd=Display&dopt=pubmed_pubmed&from_uid=16920772) Links (http://javascript%3Cb%3E%3C/b%3E:PopUpMenu2_Set%28Menu16920772%29;) http://www.ncbi.nlm.nih.gov/entrez/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-notfree-bjsports-entrez.gif (http://www.ncbi.nlm.nih.gov/entrez/utils/fref.fcgi?itool=Abstract-def&PrId=3051&uid=16920772&db=pubmed&url=http://bjsm.bmjjournals.com/cgi/pmidlookup?view=long&pmid=16920772)
Classification of functional recovery of anterior cruciate ligament copers, non-copers, and adapters.

Button K (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Button+K%22%5BAuthor%5D), van Deursen R (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22van+Deursen+R%22%5BAuthor%5D), Price P (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Price+P%22%5BAuthor%5D).

School of Healthcare Studies, Cardiff University, Heath Park, Cardiff CF14 4XN, Wales, UK.

OBJECTIVES: (a) To identify whether differences exist in the pattern of recovery with respect to functional outcomes for acutely ruptured anterior cruciate ligament deficient (ACLD) copers, adapters, and non-copers. (b) To identify clinically relevant outcomes that could distinguish between three functional subgroups. METHODS: A longitudinal study was used to measure gait variables and distance hop at regular intervals after injury using a digital camcorder and computer for quantitative analysis. A sample of 63 ACLD subjects entered the study; 42 subjects were measured at least three times. At 12-36 months after injury, subjects were classified as functional copers, adapters, or non-copers on the basis of which of their preinjury activities they had resumed. To determine the pattern of recovery, repeated measurements were analysed using a least squares fit of the data. RESULTS: 17% of ACLD subjects were classified as functional copers, 45% as adapters, and 38% as non-copers. Only 5% of those who participated in high demand activities before injury returned to them. ACLD copers had recovered above the control mean for all gait variables by 40 days after the injury. Hopping distance did not recover to the control mean. Non-copers struggled to recover to control limits and remained borderline for all the gait variables. CONCLUSIONS: Distinctive patterns of functional recovery for three subgroups of ACLD subjects have been identified. Gait variables and activity level before injury were the most useful variables for distinguishing between the subgroups. If potential for recovery is identified early after injury, then appropriate treatment can be given.

PMID: 16920772 [PubMed - as supplied by publisher]

2: Knee. (http://javascript%3Cb%3E%3C/b%3E:AL_get%28this,%20%27jour%27,%20%27Knee.%27%29;) 2006 Oct;13(5):353-8. Epub 2006 Aug 28. Related Articles, (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=pubmed_Abstract&db=pubmed&cmd=Display&dopt=pubmed_pubmed&from_uid=16935515) Links (http://javascript%3Cb%3E%3C/b%3E:PopUpMenu2_Set%28Menu16935515%29;) http://www.ncbi.nlm.nih.gov/entrez/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif (http://www.ncbi.nlm.nih.gov/entrez/utils/fref.fcgi?itool=Abstract-def&PrId=3048&uid=16935515&db=pubmed&url=http://linkinghub.elsevier.com/retrieve/pii/S0968-0160%2806%2900040-8)
The evolution of osteoarthritis in 103 patients with ACL reconstruction at 17 years follow-up.

Ait Si Selmi T (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Ait+Si+Selmi+T%22%5BAuthor%5D), Fithian D (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Fithian+D%22%5BAuthor%5D), Neyret P (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Neyret+P%22%5BAuthor%5D).

Centre Livet of Orthopaedics Surgery and Traumatology, Hopital de la Croix Rousse, Centre Livet 69300Caluire, France.

AIM: To evaluate the functional and radiological outcome of a bone-tendon-bone anterior cruciate ligament reconstruction, at long-term follow-up. METHODS: A retrospective study of 148 patients, of which 103 were available for long-term follow-up. Complete functional and radiological evaluation (International Knee Documentation Committee scale) were performed in 89 out of the 103 patients [Anderson AF. Rating scales. In: Fu FH, Harner CD, Vince KG, (Eds.). Knee Surgery, Baltimore, Williams and Wilkins vol. 1, 1994; 12, pp. 275-296]. RESULTS: The mean follow-up time was 17.4 years. Subjectively, 88% of the patients were very satisfied or satisfied. According to the IKDC score 55% had type A symptoms, 29% type B, 12% type C, and 4% type D. The IKDC ligament evaluation showed 14.9% type A, 44.8% type B, 35.8% type C, and 4.5% type D. At the review 22.7% had a narrowing <50% (C) and 4.7% a narrowing >50% (D). Onset of osteoarthritis showed an association with the status of the medial meniscus. Knees with a preserved (healthy or sutured) medial meniscus had a significantly (p<0.05) better radiological outcome. Among these, 9% had a joint space narrowing <50% (C) and 2% had a narrowing >50% (D). Medial meniscectomy, residual laxity, and femoral chondral defects were associated with osteoarthritis. CONCLUSION: The outcome of anterior cruciate ligament reconstruction plus extra-articular tenodesis is good in the very long term, particularly in knees with a preserved medial meniscus.

PMID: 16935515 [PubMed - in process]

3: Am J Sports Med. (http://javascript%3Cb%3E%3C/b%3E:AL_get%28this,%20%27jour%27,%20%27Am%20J%20Sports%20Med.%27%29;) 2006 Sep;34(9):1512-32. Related Articles, (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=pubmed_Abstract&db=pubmed&cmd=Display&dopt=pubmed_pubmed&from_uid=16905673) Links (http://javascript%3Cb%3E%3C/b%3E:PopUpMenu2_Set%28Menu16905673%29;) http://www.ncbi.nlm.nih.gov/entrez/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-notfree-sagepub-entrez.gif (http://www.ncbi.nlm.nih.gov/entrez/utils/fref.fcgi?itool=Abstract-def&PrId=3051&uid=16905673&db=pubmed&url=http://ajs.sagepub.com/cgi/pmidlookup?view=long&pmid=16905673)
Understanding and preventing noncontact anterior cruciate ligament injuries: a review of the Hunt Valley II meeting, January 2005.

Griffin LY (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Griffin+LY%22%5BAuthor%5D), Albohm MJ (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Albohm+MJ%22%5BAuthor%5D), Arendt EA (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Arendt+EA%22%5BAuthor%5D), Bahr R (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Bahr+R%22%5BAuthor%5D), Beynnon BD (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Beynnon+BD%22%5BAuthor%5D), Demaio M (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Demaio+M%22%5BAuthor%5D), Dick RW (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Dick+RW%22%5BAuthor%5D), Engebretsen L (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Engebretsen+L%22%5BAuthor%5D), Garrett WE Jr (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Garrett+WE+Jr%22%5BAuthor%5D), Hannafin JA (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Hannafin+JA%22%5BAuthor%5D), Hewett TE (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Hewett+TE%22%5BAuthor%5D), Huston LJ (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Huston+LJ%22%5BAuthor%5D), Ireland ML (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Ireland+ML%22%5BAuthor%5D), Johnson RJ (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Johnson+RJ%22%5BAuthor%5D), Lephart S (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Lephart+S%22%5BAuthor%5D), Mandelbaum BR (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Mandelbaum+BR%22%5BAuthor%5D), Mann BJ (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Mann+BJ%22%5BAuthor%5D), Marks PH (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Marks+PH%22%5BAuthor%5D), Marshall SW (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Marshall+SW%22%5BAuthor%5D), Myklebust G (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Myklebust+G%22%5BAuthor%5D), Noyes FR (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Noyes+FR%22%5BAuthor%5D), Powers C (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Powers+C%22%5BAuthor%5D), Shields C Jr (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Shields+C+Jr%22%5BAuthor%5D), Shultz SJ (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Shultz+SJ%22%5BAuthor%5D), Silvers H (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Silvers+H%22%5BAuthor%5D), Slauterbeck J (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Slauterbeck+J%22%5BAuthor%5D), Taylor DC (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Taylor+DC%22%5BAuthor%5D), Teitz CC (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Teitz+CC%22%5BAuthor%5D), Wojtys EM (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Wojtys+EM%22%5BAuthor%5D), Yu B (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Yu+B%22%5BAuthor%5D).

Peachtree Orthopaedic Clinic, Atlanta, GA 30309, USA. lethagriff@aol.com

The incidence of noncontact anterior cruciate ligament injuries in young to middle-aged athletes remains high. Despite early diagnosis and appropriate operative and nonoperative treatments, posttraumatic degenerative arthritis may develop. In a meeting in Atlanta, Georgia (January 2005), sponsored by the American Orthopaedic Society for Sports Medicine, a group of physicians, physical therapists, athletic trainers, biomechanists, epidemiologists, and other scientists interested in this area of research met to review current knowledge on risk factors associated with noncontact anterior cruciate ligament injuries, anterior cruciate ligament injury biomechanics, and existing anterior cruciate ligament prevention programs. This article reports on the presentations, discussions, and recommendations of this group.

PMID: 16905673 [PubMed - in process]

4: Arthroscopy. (http://javascript%3Cb%3E%3C/b%3E:AL_get%28this,%20%27jour%27,%20%27Arthroscopy.%27%29;) 2006 Aug;22(8):894-9. Related Articles, (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=pubmed_Abstract&db=pubmed&cmd=Display&dopt=pubmed_pubmed&from_uid=16904590) Links (http://javascript%3Cb%3E%3C/b%3E:PopUpMenu2_Set%28Menu16904590%29;) http://www.ncbi.nlm.nih.gov/entrez/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif (http://www.ncbi.nlm.nih.gov/entrez/utils/fref.fcgi?itool=Abstract-def&PrId=3048&uid=16904590&db=pubmed&url=http://linkinghub.elsevier.com/retrieve/pii/S0749-8063%2806%2900608-6)
The association between posterior-inferior tibial slope and anterior cruciate ligament insufficiency.

Brandon ML (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Brandon+ML%22%5BAuthor%5D), Haynes PT (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Haynes+PT%22%5BAuthor%5D), Bonamo JR (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Bonamo+JR%22%5BAuthor%5D), Flynn MI (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Flynn+MI%22%5BAuthor%5D), Barrett GR (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Barrett+GR%22%5BAuthor%5D), Sherman MF (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Sherman+MF%22%5BAuthor%5D).

New York Medical College-Brooklyn and Queens Program, Saint Vincent Catholic Medical Centers of New York, Jamaica, New York, USA.

PURPOSE: The purpose of this study was to determine whether an increased posterior-inferior tibial slope (PITS) is associated with anterior cruciate ligament (ACL) rupture and whether an increased PITS results in worse pivot-shift grades in ACL-insufficient patients. This study also examined the difference in PITS between men and women. METHODS: We radiographically measured the PITS angle of 100 ACL-insufficient patients and 100 patients with patellofemoral pain (control patients). The mean PITS of male and female cases and control patients was compared to determine whether sex had an influence on the mean PITS angle. The measured PITS was compared with the pivot-shift grade with patients under anesthesia in a subgroup of 87 isolated ACL-insufficient patients with no other knee injury. RESULTS: Female ACL-insufficient patients had a significantly greater PITS (12.0 degrees +/- 3.5 degrees ) than their negative controls (8.6 degrees +/- 2.7 degrees ) (P < .001). Male ACL-insufficient patients had a significantly greater PITS (10.8 degrees +/- 3.9 degrees ) than their negative controls (8.4 degrees +/- 3.4 degrees ) (P < .001). In the isolated ACL-insufficient patients, the high-grade pivot-shift patient group had a statistically significantly greater PITS (11.10 degrees +/- 3.85 degrees ) than the low-grade pivot-shift patient group (9.19 degrees +/- 3.58 degrees ) (P = .03). CONCLUSIONS: An increased PITS is associated with ACL rupture. A higher pivot-shift grade is associated with an increased degree of PITS. Female patients did not have a significantly greater mean PITS angle than male patients. LEVEL OF EVIDENCE: Level III, prognostic case-control study.

PMID: 16904590 [PubMed - indexed for MEDLINE]

5: J Bone Joint Surg Am. (http://javascript%3Cb%3E%3C/b%3E:AL_get%28this,%20%27jour%27,%20%27J%20Bone%20Joint%20Surg%20Am.%27%29; ) 2006 Aug;88(8):1826-34. Related Articles, (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=pubmed_Abstract&db=pubmed&cmd=Display&dopt=pubmed_pubmed&from_uid=16882908) Links (http://javascript%3Cb%3E%3C/b%3E:PopUpMenu2_Set%28Menu16882908%29;) http://www.ncbi.nlm.nih.gov/entrez/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-notfree-jobojos-entrez.gif (http://www.ncbi.nlm.nih.gov/entrez/utils/fref.fcgi?itool=Abstract-def&PrId=3051&uid=16882908&db=pubmed&url=http://www.ejbjs.org/cgi/pmidlookup?view=long&pmid=16882908)
Anterior cruciate ligament deficiency alters the in vivo motion of the tibiofemoral cartilage contact points in both the anteroposterior and mediolateral directions.

Li G (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Li+G%22%5BAuthor%5D), Moses JM (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Moses+JM%22%5BAuthor%5D), Papannagari R (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Papannagari+R%22%5BAuthor%5D), Pathare NP (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Pathare+NP%22%5BAuthor%5D), DeFrate LE (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22DeFrate+LE%22%5BAuthor%5D), Gill TJ (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Gill+TJ%22%5BAuthor%5D).

Bioengineering Laboratory, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, GRJ 1215, Boston, MA 02114, USA. gli1@partners.org

BACKGROUND: Quantifying the effects of anterior cruciate ligament deficiency on joint biomechanics is critical in order to better understand the mechanisms of joint degeneration in anterior cruciate ligament-deficient knees and to improve the surgical treatment of anterior cruciate ligament injuries. We investigated the changes in position of the in vivo tibiofemoral articular cartilage contact points in anterior cruciate ligament-deficient and intact contralateral knees with use of a newly developed dual orthogonal fluoroscopic and magnetic resonance imaging technique. METHODS: Nine patients with an anterior cruciate ligament rupture in one knee and a normal contralateral knee were recruited. Magnetic resonance images were acquired for both the intact and anterior cruciate ligament-deficient knees to construct computer knee models of the surfaces of the bone and cartilage. Each patient performed a single-leg weight-bearing lunge as images were recorded with use of a dual fluoroscopic system at full extension and at 15 degrees , 30 degrees , 60 degrees , and 90 degrees of flexion. The in vivo knee position at each flexion angle was then reproduced with use of the knee models and fluoroscopic images. The contact points were defined as the centroids of the areas of intersection of the tibial and femoral articular cartilage surfaces. RESULTS: The contact points moved not only in the anteroposterior direction but also in the mediolateral direction in both the anterior cruciate ligament-deficient and intact knees. In the anteroposterior direction, the contact points in the medial compartment of the tibia were more posterior in the anterior cruciate ligament-deficient knees than in the intact knees at full extension and 15 degrees of flexion (p < 0.05). No significant differences were observed with regard to the anteroposterior motion of the contact points in the lateral compartment of the tibia. In the mediolateral direction, there was a significant lateral shift of the contact points in the medial compartment of the tibia toward the medial tibial spine between full extension and 60 degrees of flexion (p < 0.05). The contact points in the lateral compartment of the tibia shifted laterally, away from the lateral tibial spine, at 15 degrees and 30 degrees of flexion (p < 0.05). CONCLUSIONS: In the presence of anterior cruciate ligament injury, the contact points shift both posteriorly and laterally on the surface of the tibial plateau. In the medial compartment, the contact points shift toward the medial tibial spine, a region where degeneration is observed in patients with chronic anterior cruciate ligament injuries.

PMID: 16882908 [PubMed - indexed for MEDLINE]

6: J Oral Rehabil. (http://javascript%3Cb%3E%3C/b%3E:AL_get%28this,%20%27jour%27,%20%27J%20Oral%20Rehabil.%27%29;) 2006 Aug;33(8):576-87. Related Articles, (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?itool=pubmed_Abstract&db=pubmed&cmd=Display&dopt=pubmed_pubmed&from_uid=16856955) Links (http://javascript%3Cb%3E%3C/b%3E:PopUpMenu2_Set%28Menu16856955%29;) http://www.ncbi.nlm.nih.gov/entrez/query/egifs/http:--www.blackwell-synergy.com-templates-jsp-_synergy-images-synergy_linkout.gif (http://www.ncbi.nlm.nih.gov/entrez/utils/fref.fcgi?itool=Abstract-def&PrId=3046&uid=16856955&db=pubmed&url=http://www.blackwell-synergy.com/openurl?genre=article&sid=nlm:pubmed&issn=0305-182X&date=2006&volume=33&issue=8&spage=576)
Effects of anterior cruciate ligament (ACL) injury on postural control and muscle activity of head, neck and trunk muscles.

Tecco S (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Tecco+S%22%5BAuthor%5D), Salini V (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Salini+V%22%5BAuthor%5D), Calvisi V (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Calvisi+V%22%5BAuthor%5D), Colucci C (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Colucci+C%22%5BAuthor%5D), Orso CA (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Orso+CA%22%5BAuthor%5D), Festa F (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22Festa+F%22%5BAuthor%5D), D'Attilio M (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Search&itool=pubmed_Abstract&term=%22D%27Attilio+M%22%5BAuthor%5D).

Department of Oral Sciences, University G.d'Annunzio, Chieti/Pescara, Italy. simtecc@tin.it

The aim of the study was to evaluate the effects that an anterior cruciate ligament injury of the knee has on postural control and activity of neck, head and trunk muscles to investigate the existence of connections between the masticatory system and body posture. Surface electromyographic activity of the muscles at mandibular rest position, and during maximal voluntary clenching and posturometric and stabilometric measurements of 25 adult patients having pathology on the left knee were compared with a control non-pathological group. At rest, the patients showed a higher muscular activity of anterior temporalis, masseter, sternocleidomastoid and lower trapezius, compared with the control subjects (P < 0.05). At maximal voluntary clenching, the patients showed a lower muscular activity of the right anterior temporalis and masseter and a higher muscular activity of the lower trapezius, compared with the control subjects. For the stabilometric measurements, all the subjects showed a significant reduction in the postural centre of pressure path length during the test with eyes open and cotton rolls, compared with the test with eyes closed and mandibular rest position (P < 0.05). In addition, the patients showed a significant displacement of the postural centre of pressure in a forward direction (P < 0.05) and into the right side (P < 0.05), compared with the control subjects. Anterior cruciate ligament injury appears to be associated to a change in the activity of head, neck and trunk muscles and to a change in the position of the postural centre of pressure. Cotton rolls seem to improve the stability of the subject.

PMID: 16856955 [PubMed - in process]