Intraoperative Administration of Adipose Stromal Vascular Fraction Does Not Improve Functional Outcomes in Young Patients with Anterior Cruciate Ligament Reconstruction.

Adipose stromal vascular fraction (SVF) has a versatile cellular system for biologically augmented therapies. However, there have been no clinical studies investigating the benefits of the augmentation of anterior cruciate ligament reconstruction (ACLR) with SVF. We conducted a retrospective study in assessing the effects of intraoperative SVF administration on the functional outcomes in young patients with ACLR.

Tensile strength, growth factor content and proliferation activities for two platelet concentrates of platelet-rich fibrin and concentrated growth factor.

Background/purpose: Platelet-rich fibrin (PRF) can be obtained by centrifuging fresh blood in the absence of anticoagulants. Varying the centrifugation speeds may produce tougher and richer concentrated growth factors (CGF). This study examines tensile strength, growth factor content, and the potential of CGF and PRF in promoting periodontal cell proliferation.

Healing of Osteochondral Defects Implanted with Biomimetic Scaffolds of Poly(ε-Caprolactone)/Hydroxyapatite and Glycidyl-Methacrylate-Modified Hyaluronic Acid in a Minipig.

Articular cartilage is a structure lack of vascular distribution. Once the cartilage is injured or diseased, it is unable to regenerate by itself. Surgical treatments do not effectively heal defects in articular cartilage.

Osteochondral Regeneration Induced by TGF-β Loaded Photo Cross-Linked Hyaluronic Acid Hydrogel Infiltrated in Fused Deposition-Manufactured Composite Scaffold of Hydroxyapatite and Poly (Ethylene Glycol)-Block-Poly(ε-Caprolactone).

The aim of this study was to report the fabrication of porous scaffolds with pre-designed internal pores using a fused deposition modeling (FDM) method. Polycaprolactone (PCL) is a suitable material for the FDM method due to the fact it can be melted and has adequate flexural modulus and strength to be formed into a filament. In our study, the filaments of methoxy poly(ethylene glycol)-block-poly(ε-caprolactone) having terminal groups of carboxylic acid were deposited layer by layer.

Quantitative diffusion-weighted magnetic resonance imaging for the diagnosis of partial-thickness rotator cuff tears.

Background: This study investigated diffusion-weighted (DWI) magnetic resonance imaging (MRI) as an alternative to fat-suppressed T2-weighted imaging (FS-T2WI) for assessment of partial-thickness rotator cuff tears (RCTs).

Methods: Patients with arthroscopy proven partial-thickness RCTs who also received MRI (FS-T2WI and DWI) before surgery were prospectively included. Receiver operating characteristic curves were used to compare DWI vs.

Interpositional arthroplasty with palmaris longus tendon graft for osteonecrosis of the second metatarsal head: a case report.

Osteonecrosis of the second metatarsal head is often attributed to Freiberg's disease. We describe the case of a 27-year-old Taiwanese male soldier with persistent painful disability of the right forefoot of 9 months' duration, but no history of trauma. A series of radiographs suggested the diagnosis of late-stage Freiberg's disease.

Cell fusion phenomena detected after in utero transplantation of Ds-red-harboring porcine amniotic fluid stem cells into EGFP transgenic mice.

Objectives: Amniotic fluid stem cells (AFSCs) are derived from the amniotic fluid of the developing fetus and can give rise to diverse differentiated cells of ectoderm, mesoderm, and endoderm lineages. Intrauterine transplantation is an approach used to cure inherited genetic fetal defects during the gestation period of pregnant dams. Certain disease such as osteogenesis imperfecta was successfully treated in affected fetal mice using this method.

In situ gelation of PEG-PLGA-PEG hydrogels containing high loading of hydroxyapatite: in vitro and in vivo characteristics.

Thermosensitive hydrogels are renowned carriers that are used to deliver a variety of drugs with the aim of combating diseases. In this study, the injectability of thermosensitive hydrogels comprised of poly(ethylene glycol)-poly(lactic acid-co-glycolic acid)-poly(ethylene glycol) (PEG-PLGA-PEG, PELGE) and hydroxyapatite (HA) were examined for their ability to deliver bone morphological protein 2 (BMP-2). The physicochemical characteristics of PELGE, HA, and PELGE/HA hydrogel composites were investigated by (1)H NMR, GPC, FTIR, XRD, SEM, and TEM.

Solid freeform fabrication and in-vitro response of osteoblast cells of mPEG-PCL-mPEG bone scaffolds.

Bone tissue engineering is an emerging approach to provide viable substitutes for bone regeneration. Poly(ethylene glycol) (PEG) is a good candidate of bone scaffold because of several advantages such as hydrophilicity, biocompatibility, and intrinsic resistance to protein adsorption and cell adhesion. However, its low compressive strength limits application for bone regeneration.

Electrothermal treatment of thumb basal joint instability.

Purpose: This study examined whether radiofrequency electrothermal treatment of thumb basal joint instability could produce clinical improvement and result in successful functional outcomes for patients.

Methods: From August 2001 to April 2006, we treated 17 thumbs with symptomatic thumb basal joint instability using arthroscopic electrothermal shrinkage of the volar ligaments and joint capsule with a monopolar radiofrequency probe. The sample included 11 men and 6 women with a mean age of 35.

Correlation between proprioception, muscle strength, knee laxity, and dynamic standing balance in patients with chronic anterior cruciate ligament deficiency.

Proprioception and muscle strength are both reported to influence single-limb stance balance in patients with chronic anterior cruciate ligament (ACL) injuries. However, the effects of these parameters on dynamic stance balance in such patients are currently unknown. This study was undertaken to ascertain whether proprioception, muscle strength, and knee laxity are correlated with dynamic standing balance in patients with ACL deficiency.

Stabilization of the proximal ulnar stump after the Darrach or Sauvé-Kapandji procedure by using the extensor carpi ulnaris tendon.

The Darrach and Sauvé-Kapandji procedures are considered to be useful treatment options for distal radioulnar joint disorders. Postoperative instability of the proximal ulnar stump and radioulnar convergence, however, may cause further symptoms. From October 1999 to May 2002, a total of 19 wrists in 15 men and four women, with an average age of 48.

Surgical outcome of volar plate arthroplasty of the proximal interphalangeal joint using the Mitek micro GII suture anchor.

Background: The mechanism of injury in dorsal dislocation is usually a hyperextensive stress simultaneous with some degree of longitudinal compression. Operative treatment is indicated for those unstable and reduction is not achieved. We report the surgical outcome of volar plate arthroplasty of the proximal interphalangeal (PIP) joint using the Mitek Micro GII suture anchor.

Extensor-tendons reconstruction using autogenous palmaris longus tendon grafting for rheumatoid arthritis patients.

Background: The purpose of the study is to retrospectively review the clinical outcome of our study population of middle-aged RA patients who had suffered extensor-tendon rupture. We reported the outcome of autogenous palmaris tendon grafting of multiple extensor tendons at wrist level in 14 middle-aged rheumatoid patients.

Methods: Between Feb.

Combined extraforaminal and intradiscal cement leakage following percutaneous vertebroplasty.

Study Design: A case report and review of the literature are presented.

Objective: To describe an extremely rare case of combined extraforaminal and intradiscal cement leakage in different vertebral levels following percutaneous vertebroplasty.

Summary Of Background Data: Cement leaks in vertebroplasty are relatively common but generally not clinically significant.

Monopolar radiofrequency electrothermal shrinkage of the scapholunate ligament.

Purpose: This study examined whether radiofrequency electrothermal shrinkage has a role in the treatment of patients with symptomatic dynamic and predynamic scapholunate (SL) instability without advanced degenerative changes.

Methods: From January 1999 to July 2001, 19 wrists with laxity of the SL ligament, but with symptomatic instability, were treated with arthroscopic electrothermal shrinkage of the SL ligament using a monopolar radiofrequency probe. Before surgery, all patients underwent wrist arthroscopy to confirm the diagnosis and exclude arthritis.

Functional results post-triangular fibrocartilage complex reconstruction with extensor carpi ulnaris with or without ulnar shortening in chronic distal radioulnar joint instability.

From September 1996 to September 2001, 37 adult patients were diagnosed with chronic triangular fibrocartilage complex (TFCC) tears with distal radioulnar joint (DRUJ) instability in our clinic. They had all received the procedure of TFCC reconstruction with partial extensor carpi ulnaris (ECU) combined with or without ulnar shortening. There were 36 males and one female in the study with a mean age of 22.

Results of arthroscopic reduction and percutaneous fixation for acute displaced scaphoid fractures.

Purpose: This study used percutaneous techniques augmented by simultaneous wrist arthroscopy to visualize the fracture and thus confirm the fracture alignment and reduction and also to assesses the concurrent associated ligament injuries.

Type Of Study: Retrospective study.

Methods: Arthroscopy was used to help to reduce scaphoid fractures and assess soft-tissue injuries in 15 acute cases (13 male and 2 female patients).

Dorsal capsulodesis and ligamentoplasty for chronic pre-dynamic and dynamic scapholunate dissociation.

Scapholunate (SL) instability is the most common cause of carpal instability. Pre-dynamic and dynamic type SL instability is difficult to diagnose and treat. This series reviews 17 soldiers with pre-dynamic or dynamic SL instability diagnosed by midcarpal arthroscopy and treated with dorsal capsulodesis and augmentation ligamentoplasty with partial dorsal radiocarpal (DRC) ligament procedure between 1997 and 2000.

Treatment of tibial pilon fractures using the Link May Anatomic Bone Plate.

Background: The tibial pilon fracture is a relatively uncommon but a most difficult fracture to manage. Most orthopedic surgeons agree that the goal of treating such kind of fracture should be anatomic restoration of the articular surface, rigid and stable fixation, early restoration of joint motion, and finally, good functional recovery. We report our experience in managing the fracture and evaluate the operative results for patients who were treated with the Link May Anatomic Bone Plate.

Chronic triangular fibrocartilage complex tears with distal radioulna joint instability: A new method of triangular fibrocartilage complex reconstruction.

From September 1996 to September 1997, 27 adult patients were diagnosed with chronic triangular fibrocartilage complex (TFCC) tears with distal radioulna joint (DRUJ) instability in our clinic. They all received the procedure of TFCC reconstruction with partial extensor carpi ulnaris (ECU) tendon combined with or without ulnar shortening. There were 26 males and one female in the study with a mean age of 22.

Early isolated triangular fibrocartilage complex tears: management by arthroscopic repair.

Background: Tears in the traumatic triangular fibrocartilage complex (TFCC) are generally caused by falling accidents with pronated, hyperextended wrists, or by distraction injuries that pull the ulnar side of the wrist out of place. Tears in the triangular fibrocartilage complex often appear in association with ulnar wrist pain and limited wrist function in work or sport. This study addressed the arthroscopic repair of peripheral tears in the TFCC, in a sample of 37 patients who were undergoing TFCC repair by wrist arthroscopy.