A new minimal-invasive approach for total hip replacement in sheep.

Background: Over the last 50 years arthroplasty became the gold-standard treatment for disabling conditions of the coxofemoral joint. Variations of anterior, lateral, and dorsal incision have been applied, but as each approach requires the incision and reflection of various muscles to gain adequate exposure of the joint results are still controversial.

Objective: The purpose of this study was to develop a minimal-invasive, tissue-sparing approach in sheep with reduced risks in animal testing.

Lumbar spinal stenosis - surgical outcome and the odds of revision-surgery: Is it all due to the surgeon?

Background: Surgical decompression is the intervention of choice for lumbar spinal stenosis (LSS) when non-operative treatment has failed. Apart from acute complications such as hematoma and infections, same-level recurrent lumbar stenosis and adjacent-segment disease (ASD) are factors that can occur after index lumbar spine surgery.

Objective: The aim of this retrospective case series was to evaluate the outcome of surgery and the odds of necessary revisions.

Primary stability of the Activ L® intervertebral disc prosthesis in cadaver bone and comparison of the keel and spike anchoring concept.

Background: High primary stability is the key prerequisite for safe osseointegration of cementless intervertebral disc prostheses. The aim of our study was to determine the primary stability of intervertebral disc prostheses with two different anchoring concepts - keel and spike anchoring.

Methods: Ten ActivL intervertebral disc prostheses (5 x keel anchoring, 5 x spike anchoring) implanted in human cadaver lumbar spine specimens were tested in a spine movement simulator.

The Nomenclature, Definition and Distinction of Types of Shock.

Background: A severe mismatch between the supply and demand of oxygen is the common feature of all types of shock. We present a newly developed, clinically oriented classification of the various types of shock and their therapeutic implications.

Methods: This review is based on pertinent publications (1990-2018) retrieved by a selective search in PubMed, and on the relevant guidelines and meta-analyses.

Cartilage Surgery in Overweight Patients: Clinical and MRI Results after the Autologous Matrix-Induced Chondrogenesis Procedure.

Modern orthopaedic surgery provides a variety of techniques for cartilage repair. The Autologous Matrix-Induced Chondrogenesis (AMIC) procedure is a single-step technique with a collagen I/III scaffold for the treatment of full-thickness cartilage lesions. The aim of the study was to analyze the outcome of the AMIC procedure in overweight patients with knee cartilage defects.

Intrathecal volume changes in lumbar spinal canal stenosis following extension and flexion: An experimental cadaver study.

Background: The spinal canal stenosis is a common disease in elderly. The thecal sac narrowing is considered as the anatomical cause for the disease. There is evidence that the anatomical proportions of the lumbar spinal canal are influenced by postural changes.

Anatomical study of preganglionic spinal nerve and disc relation at different lumbar levels: Special aspect for microscopic spine surgery.

Background: Lumbar microdiscectomy is a widespread popular method of treatment. One major challenge is the spine level dependent different anatomy and the limited sight on the nerve root during the surgical procedure.

Objective: The aim was to analyze the specific anatomic relation of nerve root, intervertebral disc and intervertebral ganglion under determination of the specific nerve distances.

Age dependent changes of the facet joint alignment for cervical disc replacement: A radiographic evaluation.

Background: Artificial cervical disc implants are meant to last for several decades and therefore it is of interest, how the cervical facet joints undergo physiological changes over the course of years.

Objective: The primary purpose of this study is to investigate an age dependent deformation in human cervical facet joints.

Material And Methods: The motion segments C2 to Th1 were measured in the cervical X-rays of 131 patients, aged between 14 and 88 years.

Does osteoporosis reduce the primary tilting stability of cementless acetabular cups?

Background: Cementless hip cups need sufficient primary tilting stability to achieve osseointegration. The aim of the study was to assess differences of the primary implant stability in osteoporotic bone and in bone with normal bone density. To assess the influence of different cup designs, two types of threaded and two types of press-fit cups were tested.

Anatomy of the infrapatellar branch in relation to skin incisions and as the basis to treat neuropathic pain by cryodenervation.

Background: Neuropathic knee pain, particularly of the infrapatellar branch, is an important complication of knee replacement surgery, with an incidence as high as 70%. The increasing number of elderly patients requiring knee surgery, including total knee arthroplasty (TKA), has contributed to an increase in the number of patients with this pathology. Treatment includes neurectomy, infiltration therapy, and cryodenervation.

The role of arthroscopy in patients with persistent hip pain after total hip arthroplasty.

Background: Total hip arthroplasty (THA) is a safe and successful procedure for the treatment of osteoarthritis. One of the most common postoperative problems remains persistent hip pain. The arthroscopic evaluation of persistent hip pain following THA can be a valuable diagnostic tool in a select number of patients when carried out by experts in this technique.

The deviation of the mechanical leg axis correlates with an increased hip alpha angle and could be a predictor of femoroacetabular impingement.

Purpose: This study was designed to evaluate whether the mechanical axis deviation (MAD) of the leg correlates with an increased hip alpha angle as described by Nötzli, which is associated with femoroacetabular impingement (FAI).

Methods: In a retrospective analysis, standing full-length anteroposterior radiographs were analysed in patients who suffered from symptomatic leg alignment. The study included 85 radiographs of 80 patients with an average age of 43.

Refractory adhesive capsulitis under acitretin therapy.

Background: Adhesive capsulitis (AC) is characterized by a limited active and passive motion. Although the exact pathology remains unknown, a number of contributing factors are discussed.

Objective: AC has probably been caused by the Re-PUVA therapy (PUVA irradiation plus acitretin) of a cutaneous T-cell lymphoma, type mycosis fungoides.

[Effectiveness and safety of a homeopathic drug combination in the treatment of chronic low back pain. A double-blind, randomized, placebo-controlled clinical trial].

Background: The homeopathic drug combination Lymphdiaral Basistropfen is established in the treatment of edema and swellings. This is the first time the effectiveness and safety was investigated in the treatment of chronic low back pain.

Methods: The study is a randomized, double-blind, placebo-controlled trial.

Primary stability of cementless threaded acetabular cups at first implantation and in the case of revision regarding micromotions as indicators.

The primary stability of cementless total hip endoprosthesis is of vital importance for proximate, long-term osteointegration. The extent of micromotions between implant and acetabulum is an indicator of primary stability. Based on this hypothesis, different cementless hip joint endoprosthesis were studied with regard to their micromotions.

Analysis of the sensory innervations of the greater trochanter for improving the treatment of greater trochanteric pain syndrome.

In medical practice, greater trochanteric pain syndrome has an incidence of 5.6 per 1,000 adults per year, and affects up to 25% of patients with knee osteoarthritis and low back pain in industrialized nations. It also occurs as a complication after total hip arthroplasty.

A morphometric cadaver study of the anterior lumbar epidural space.

Introduction: Free disc fragments end often up in the concavity of the anterior epidural space. This space consists of two compartments. The discrepancy between the impressive magnetic resonance imaging findings, clinical symptoms in patients and the problem of treatment options led us to the anatomical determination of anterior epidural space volumes.

Late Periprosthetic Joint Infection due to Staphylococcus lugdunensis Identified by Matrix-Assisted Laser Desorption/Ionisation Time of Flight Mass Spectrometry: A Case Report and Review of the Literature.

Staphylococcus lugdunensis, member to the group of coagulase-negative staphylococci, is previously thought to be rarely isolated. Recently other staphylococci have been described, which were supposedly related to S. lugdunensis, such as Staphylococcus pseudolugdunensis and Staphylococcus pettenkoferi.

[Naturopathic and orthopaedic in-patient treatment of chronic back pain--a comparison study].

Background: This study compares orthopaedic and naturopathic inpatient treatment concepts for back pain with regards to therapeutic efficacy.

Patients And Methods: A controlled prospective cohort study is presented. 187 conservatively treated patients of an orthopaedic clinic and 161 patients of a clinic for naturopathy were recruited for the study, if they needed inpatient treatment because of chronic back pain.

An international expert survey on acupuncture in randomized controlled trials for low back pain and a validation of the low back pain acupuncture score.

Background: Acupuncture is a promising treatment approach in patients with chronic low back pain (cLBP) but little is known about the quality of acupuncture in randomized controlled trials (RCT) of acupuncture cLBP. -

Objective: To determine how international experts (IES) rate the quality of acupuncture in RCTs of cLBP; independent international validation of the Low Back Pain Acupuncture Score (LBPAS).

Methodology: Fifteen experts from 9 different countries outside China were surveyed (IES).

[Does osteoporosis lead to reduction the primary stability of cementless hip cups?].

Background: Cementless hip cups require adequate primary stability in order to achieve osseointegration. Depending on implant design, a different biomechanical behavior in osteoporotic bone and in bone with normal bone mineral density might be expected.

Material And Methods: The micromovement between bone and implant was determined in macerated human hip acetabula with reduced and with normal bone density for two different cementless screwed cups and two different cementless press-fit cups.

[Rupture of the anterior cruciate ligament. Diagnostics and therapy].

Rupture of the anterior cruciate ligament (ACL) is the most common ligamentous knee injury. The knee is stabilized by the cruciate ligaments and the collateral ligaments. The ACL originates from the inner surface of the lateral condyle of the femur, runs in an anterior medial direction and inserts at the tibial plateau in the intercondyle area.