Stress fractures, active component, U.S. Armed Forces, 2004-2010.

No abstract.  Lee D; Armed Forces Health Surveillance Center (AFHSC). MSMR. 2011 May;18(5):8-11. No abstract available. PMID: 21793616 PDF

Effects of different initial bundle tensioning strategies on the outcome of double-bundle ACL reconstruction: a cohort study.

The current clinical study does not recommend manual maximum of initial tension applied to the anteromedial or posterolateral bundles with graft tension imbalance at 30 degrees of flexion in double-bundle ACL reconstruction to achieve a better clinical outcome. Muneta T, Koga H, Ju YJ, Yagishita K, Sekiya I. Sports Med Arthrosc Rehabil Ther Technol. 2011 Jul 8;3(1):15. [Epub ahead of print] PMID: 21794179

Tendon phenotype should dictate tissue engineering modality in tendon repair: a review.

Advancements in the technical aspects of tendon repair have significantly improved the treatment of tendon injuries. Arthroscopic techniques, suture material, and improved rehabilitation have all been contributing factors. Biological augmentation and tissue engineering appear to have the potential to improve clinical outcomes as well. After review of the physiology of tendon repair, three critical components of tissue engineering can be discerned: the cellular component, the carrier vehicle (matrix or scaffold), and the bioactive component (growth factors, platelet rich plasma). These three components are discussed with regard to each of three tendon types: Intra-synovial (flexor tendon), extra-synovial (Achilles tendon), and extra-synovial tendon under compression (rotator cuff). Scaffolds, biologically enhanced scaffolds, growth factors, platelet rich plasma, gene therapy, mesenchymal stem cells, and local environment factors in combination or alone may contribute to tendon healing. In the future it may be beneficial to differentiate these modes of healing augmentation with regard to tendon subtype. Gott M, Ast M, Lane LB, Schwartz JA, Catanzano A, Razzano P, Grande DA. Discov Med. 2011 Jul;12(62):75-84. PMID: 21794211

Isolated scaphoid fracture with anterosuperior dislocation of the proximal fragment.

Isolated fracture of the scaphoid with an associated anterosuperior dislocation of the proximal fragment is an extremely rare injury. We present two cases where open reduction and internal fixation through a palmar and dorsal approach was performed. No instances of non-union, necrosis of the proximal fragment of the scaphoid or scapholunate dissociation were noted during a mean follow-up period of 18months. Clinical results (active motion, power grip, DASH) following such injury and intervention are presented. The aetiology of this rare injury is discussed. Durand S, Macquillan A, Delpit X. Chir Main. 2011 Jul 5. [Epub ahead of print] PMID: 21795095

Fractures during Childhood and Adolescence in Healthy Boys: Relation with Bone Mass, Microstructure, and Strength.

In a homogeneous cohort of healthy boys, fractures recorded until 15.2±05 yr of age were associated with lower femoral neck aBMD and with lower distal tibia trabecular vBMD and number, stiffness and failure load. These deficits in bone mineral mass, microstructure and strength could contribute to the occurrence of fractures during growth.  Chevalley T, Bonjour JP, van Rietbergen B, Ferrari S, Rizzoli R. J Clin Endocrinol Metab. 2011 Jul 27. [pub ahead of print] PMID: 21795454

Contrast-enhanced sonographic characterization of the vascularity of the repaired rotator cuff: utility of maximum intensity projection imaging.

The maximum intensity projection technique after contrast-enhanced sonography provides a topographic map of rotator cuff vascularity; the latter has been implicated as an important factor in promoting bone-tendon healing. Approximately 3 months after rotator cuff repair, the suture anchor and peribursal regions showed the most robust vascularity. Maximum intensity projection imaging further establishes that there is a global increase in vascular response at the repair site after exercise.  Adler RS, Johnson KM, Fealy S, Maderazo A, Gallo RA, Gamradt SC, Warren RF. J Ultrasound Med. 2011 Aug;30(8):1103-9. PMID: 21795486

Operative treatment of avascular necrosis of the femoral head after proximal femur fractures in adolescents.

Patients treated for ANFH had good medium-term outcomes after THR for total necrosis and also after VITO for partial necrosis.  Bartoníček J, Vávra J, Bartoška R, Havránek P. Int Orthop. 2011 Jul 28. [Epub ahead of print] PMID: 21796335

Development and Validation of a Computational Model for Investigation of Wrist Biomechanics.

The computational model was able to accurately predict flexion, extension, radial deviation, and ulnar deviation motions in four states: normal (intact), RSL fusion, RSL fusion with the scaphoid distal pole excised, and RSL fusion with both the scaphoid distal pole and triquetrum excised. The model was also able to calculate other parameters of interest that are not easily obtainable experimentally, such as midcarpal forces. This model and modeling approach are anticipated to have value as a predictive clinical tool including effect of injuries or anatomical variations and initial outcome of surgical procedures for patient specific planning and custom implant design.  Majors BJ, Wayne JS. Ann Biomed Eng. 2011 Jul 28. [Epub ahead of print] PMID:  21796501]

Learning of musculoskeletal ligament stress testing in a gross anatomy laboratory.

Human anatomy in physical therapy programs is a basic science course serving as a foundation for subsequent clinical courses. Integration of anatomy with a clinical emphasis throughout a curriculum provides opportunities for reinforcement of previously learned material. Considering the human cadaver laboratory as a fixed cost to our program, we sought opportunities to add value to the resource via vertical integration into a clinical skills course taught later in the curriculum. Krause DA, Youdas JW, Hollman JH. Anat Sci Educ. 2011 Jul 27. doi: 10.1002/ase.248. [Epub ahead of print] PMID: 21796799

Heterotopic ossification in complex orthopaedic combat wounds: quantification and characterization of osteogenic precursor cell activity in traumatized muscle.

Heterotopic ossification frequently develops following high-energy blast injuries sustained in modern warfare. We hypothesized that differences in the population of progenitor cells present in a wound would correlate with the subsequent formation of heterotopic ossification.   Davis TA, O'Brien FP, Anam K, Grijalva S, Potter BK, Elster EA. J Bone Joint Surg Am. 2011 Jun 15;93(12):1122-31. PMID: 21776549

 

Risk factors for fractured clavicle in the newborn.

We could not identify significant risk factors that could be dealt with in order to avoid a fractured clavicle being sustained during birth. Most fractured clavicles occur in normal newborns following normal labor and delivery.  Lurie S, Wand S, Golan A, Sadan O. J Obstet Gynaecol Res. 2011 Jul 25. doi: 10.1111/j.1447-0756.2011.01576.x. [Epub ahead of print] PMID: 21790882

A brachialis muscle rupture diagnosed by ultrasound; case report.

Trauma to the elbow caused by lifting heavy objects frequently involves rupture of the tendon of the biceps brachii muscle. Less frequently a rupture of the brachialis muscle occurs. To our knowledge, only five cases involving traumatic rupture of the brachialis muscle were described in the past 20 years. We will briefly report these cases. To demonstrate and evaluate muscle injuries, magnetic resonance imaging (MRI) is considered the most sensitive and specific method of choice. We report an isolated brachialis muscle rupture caused by resisted flexion and pronation of the lower arm. Physical examination combined with ultrasound evaluation confirmed the diagnosis of ruptured brachialis muscle. Treatment was non-operative with full restoration of function.  Schonberger TJ, Ernst MF. Int J Emerg Med. 2011 Jul 26;4(1):46. [Epub ahead of print] PMID: 21791098

Effectiveness of intra-articular hyaluronan (Synvisc, hylan G-F 20) for the treatment of first metatarsophalangeal joint osteoarthritis: a randomised placebo-controlled trial.

An intra-articular injection of hylan G-F 20 is no more effective than a placebo in reducing symptoms in people with symptomatic first MTPJ OA  Munteanu SE, Zammit GV, Menz HB, Landorf KB, Handley CJ, Elzarka A, Deluca J. Ann Rheum Dis. 2011 Jul 25. [Epub ahead of print] PMID: 21791454

Comparison of Clinical Results of Anatomic Posterolateral Corner Reconstruction for Posterolateral Rotatory Instability of the Knee With or Without Popliteal Tendon Reconstruction.

 It is unknown whether popliteal tendon reconstruction is necessary in anatomic posterolateral corner reconstruction, although the tendon has function in the varus and rotatory stability of the knee joint. Hypothesis: Anatomic reconstructions of the posterolateral corner with the popliteal tendon reconstructed will present better clinical and radiographic results than cases with the popliteal tendon not reconstructed.  Yoon KH, Lee JH, Bae DK, Song SJ, Chung KY, Park YW. Am J Sports Med. 2011 Jul 26. [Epub ahead of print] PMID: 21791626 PDF

Retention treatment after periprosthetic total hip arthroplasty infection.

Retention treatment can be considered an initial treatment option in selected cases of primary THA, with a single organism, non-S. aureus infection with 50% chance of infection control and no disadvantages in terms of additional procedure, hospital stay, and treatment duration.  Choi HR, von Knoch F, Kandil AO, Zurakowski D, Moore S, Malchau H. Int Orthop. 2011 Jul 27. [Epub ahead of print] PMID: 21792609

A practical guide to research: design, execution, and publication

No abstract available. Karlsson J, Marx RG, Nakamura N, Bhandari M. Arthroscopy. 2011 Apr;27(4 Suppl):S1-S112. PMID: 21749939  PDF

Inflammatory phase of bone healing initiates the regenerative healing cascade.

Results from this study suggest that there are unfavorable immune cells and factors participating in the initial healing phase. In conclusion, identifying beneficial aspects may lead to promising therapeutical approaches that might benefit further by eliminating the unfavorable factors. Schmidt-Bleek K, Schell H, Schulz N, Hoff P, Perka C, Buttgereit F, Volk HD, Lienau J, Duda GN. Cell Tissue Res. 2011 Jul 26. [Epub ahead of print] PMID: 21789579

Sensate composite calcaneal flap in leg amputation: a full terminal weight-bearing surface-experience in eight adult patients.

Despite modern reconstruction techniques and replantation, the preservation of a severely traumatised limb, or even a limb affected by a congenital malformation, usually gives poorer functional results compared with amputation and prosthetisation. The aim of this study was to describe a hind foot (including the calcaneum and fat pad) sensate flap with a surface that allows full terminal weight bearing in transtibial amputations in adults.  Livani B, Castro G, Filho JR, Morgatho TR, Mongon ML, Belangero WD, Davitt M, Carvalho JA. Strategies Trauma Limb Reconstr. 2011 Jul 26. [Epub ahead of print] PMID: 21789589

Do Patients With Traumatic Recurrent Anterior Shoulder Instability Have Generalized Joint Laxity?

A number of studies suggest a relationship between generalized joint laxity (GJL) and increased risk of some musculoskeletal injuries. However, there are conflicting data on the association between GJL and traumatic recurrent shoulder instability (RSI). Ranalletta M, Bongiovanni S, Suarez F, Ovenza JM, Maignon G. Clin Orthop Relat Res. 2011 Jul 26. [Epub ahead of print] PMID: 21789709

Clinical experience with a reverse-flow anterolateral thigh perforator flap for the reconstruction of soft-tissue defects of the knee and proximal lower leg.

Despite a variable vascular anatomy that can be challenging for the surgeon, reverse-flow anterolateral thigh perforator flap is a safe and reliable method for reconstruction of the defects around the knee and even the upper third of the leg. Demirseren ME, Efendioglu K, Demiralp CO, Kilicarslan K, Akkaya H. J Plast Reconstr Aesthet Surg. 2011 Jul 22. [Epub ahead of print] PMID: 21784720  PDF