Editorial Commentary: Platelet-Rich Plasma Versus Surgery for Hip Greater Trochanteric Pain Syndrome-Systematic Reviews Made Difficult by the Use of Vague Terms.

Greater trochanteric pain syndrome responds favorably to platelet-rich plasma and surgery as measured by patient-reported outcomes, with a lesser complication rate with injections. Broad and inaccurate terminology makes data synthesis impossible and systematic reviews difficult to interpret.

Editorial Commentary: Doctor, Will My Contralateral Hip Surgery Go as Well as the First One?

Patients presenting with bilateral symptomatic femoroacetabular impingement for staged bilateral hip surgery or developing pain in their nonoperated hip after hip arthroscopy are likely to have similar pathology in both hips. They have a high likelihood of similarly good outcome after their contralateral hip arthroscopy.

Editorial Commentary: Be on the Lookout for White Chalk! Hip Labrum Calcification.

Amorphous calcification of the hip labrum is a little known and relatively rare condition. Although patients with amorphous calcification have favorable post-arthroscopic surgery self-reported outcome, it is unclear how much of their improvement can be attributed to the debridement of the calcific lesion itself.

Editorial Commentary: International Society for Hip Arthroscopy Surgeons! Time for a Rethink on Rehab!

Although the majority of arthroscopic hip surgeons have active websites, only few of these provide postoperative rehabilitation protocols. The available information and instructions show considerable variability.

Editorial Commentary: Looking Past the Hip Joint-The Role of Pelvic Incidence in Femoroacetabular Impingement.

In a retrospective comparative study, pelvic incidence was significantly less in patients with symptomatic femoroacetabular impingement (FAI), with a significant difference in FAI subgroups compared with asymptomatic volunteers. This finding may help to explain the existence of asymptomatic FAI morphology and highlight the importance of thorough assessment of the patient with hip pain.

Editorial Commentary: It Is Best to Be on the Safe Side: Which Portal to Use for Safe Anchor Insertion for Hip Labral Repair.

When repairing hip labra arthroscopically, labral anchors seem to have a better trajectory and less risk of joint penetration when placed from the distal anterolateral accessory portal compared with the traditional anterolateral and midanterior portals.

Editorial Commentary: Shall We Just Get It All Done With? Simultaneous Versus Staged Bilateral Hip Arthroscopy.

Simultaneous bilateral hip arthroscopies have comparable patient-reported outcomes and little risk of complications when compared with staged bilateral hip arthroscopies in the treatment of femoroacetabular impingement. There will always be a selection bias, however: rehabilitation requiring 4-point gait will be more difficult, and some would consider that a simultaneous bilateral operation is more suited for the young, motivated, physically fit patient.

Editorial Commentary: Do Our Hip Arthroscopy Patients End Up With a Shiny New Hip?

In a cohort of over 7,000 patients, the rate of conversion to total hip arthroplasty after hip arthroscopy was 12.4%. Increased age, the presence of osteoarthritis, the presence of obesity, and low surgeon volume were all independent risk factors for a higher rate of revision.

Editorial Commentary: Workers' Compensation and Hip Arthroscopy.

Patients with active claims for workplace injuries will benefit from treatment for femoroacetabular impingement, but improvement is not as good as in the patients with sports-related injuries. Workers' Compensation patients differ from highly motivated athletes.

Editorial Commentary: Another Drop of Knowledge on Ischiofemoral Impingement.

In patients with symptomatic hip ischiofemoral impingement, mean femoral neck anteversion and the angle between the femoral neck and lesser trochanter is higher, whereas mean lesser trochanter version is not increased.

Editorial Commentary: The Demise of Randomized Controlled Trials in Hip Arthroscopy?

Hip arthroscopists asked to participate in randomized controlled trials are reluctant to offer treatment without correction of osseous deformities but may be more willing to enroll patients in studies on management of capsulolabral structures.

Bilateral ganglion cysts of the cruciate ligaments: a case report.

Symptomatic ganglion cysts of the cruciate ligaments are rare, and bilateral cases are extremely rare, with only one reported case in the literature. We report a case of bilateral cruciate ligament ganglion cysts successfully treated with arthroscopic resection, and review the literature regarding aetiology, diagnosis and management.

The long-term benefit of computer-assisted surgical navigation in unicompartmental knee arthroplasty.

We reviewed the outcomes of 30 consecutive primary unicompartmental knee arthroplasties (UKA) performed by a single surgeon for medial compartmental osteoarthritis. Fifteen Allegretto knees were implanted without computer navigation and 15 EIUS knees were implanted with navigation. We compared the survivorship, radiological and clinical outcomes of the two groups at an average of 8.9 years and 6.9 years respectively. The patients were assessed clinically using the Oxford Knee Score (OKS) and radiologically using long-leg weightbearing films and non-weightbearing computed tomography alignment measurements. The overall survivorship was 86.7% at 9 years. A higher proportion of navigated knees were well aligned with a more reproducible position and malaligned knees tended to have a less favourable OKS. However, we found no statistically significant difference in survivorship, clinical outcome and radiological alignment between the two groups.

RSA can measure ACL graft stretching and migration: development of a new method.

UNLABELLED: We describe the development of a method using radiostereometric analysis to measure fixation slippage and graft stretching after anterior cruciate ligament reconstruction. Initial development used a glass phantom object, then a series of laxity measurements of cadaveric knees. After this, we prospectively studied 14 patients after anterior cruciate ligament reconstruction using bone-patellar tendon-bone and hamstrings grafts. Tantalum markers were inserted into the femur, the tibia, and the graft. Radiostereometric analysis was used to measure sagittal laxity, graft stretching, and fixation slippage postoperatively and at intervals up to 1 year after surgery. The cadaveric knee laxity measured by RSA correlated with clinically-accepted KT2000 measurements. A steady increase in total anteroposterior laxity was found in both clinical groups during the year of followup. Migration of the bony fixations and stretching of the grafts tended to be higher in the hamstrings group. This method of anterior cruciate ligament graft analysis provides a new way to ascertain laxity changes in the reconstruction after surgery. LEVEL OF EVIDENCE: Diagnostic Level II. See Guidelines for Authors for a complete description of levels of evidence.

Septic arthritis of the elbow after chickenpox.

Musculoskeletal complications following chickenpox are rare among immunologically normal children. Septic arthritis after varicella is caused by group A Streptococcus and affects the knee most frequently. We present a case of septic arthritis of the elbow caused by Staphylococcus aureus. We review the English language literature on septic arthritis complicating chickenpox. We conclude that diagnosis and treatment should be carried out according to guidelines on de novo septic arthritis including the early use of magnetic resonance imaging.