Validating the Cambridge Protocol: Reliability of Hip Muscle Strength Measurements Using a Motorized Dynamometer and Electromyography.

BACKGROUND: Muscle weakness is common after injury in athletes and in the presence of hip pathology. It will cause abnormal hip biomechanics and can predict future injury. However, objective measurement of hip muscle strength is difficult to perform accurately and reliably. Therefore, it is challenging to determine when an athlete has returned to preinjury levels of strength. In addition, there is currently no standardized method of obtaining measurements, which prevents the data being compared or shared between research centers. PURPOSE: The purpose of this study is to comprehensively assess the inter- and intraobserver reliability of our standardized muscle strength measurement protocol. STUDY DESIGN: Descriptive laboratory study. LEVEL OF EVIDENCE: Level 3, inception cohort study. METHODS: A total of 16 healthy male volunteers (age = 28.3 ± 7.9 years) were recruited. Those with a previous history of hip injuries or disorders were excluded. These volunteers underwent strength testing according to the Cambridge Protocol on 4 separate occasions, performed by 2 independent assessors. Maximal voluntary contractions, fatigue torque fluctuations, and electromyography measurements were recorded. Intra- and interobserver reliability was assessed using intraclass correlation coefficient (ICC). RESULTS: Good-to-excellent correlation was seen for both intra- and interobserver reliability across almost all hip movements for maximal contractions: ICC ranged 0.78 to 0.93 and 0.78 to 0.96, respectively. The standard error of the mean for all hip movements was also extremely low at 2% to 3%. CONCLUSION: The Cambridge Protocol is a highly reliable method for objective measurement of hip muscle strength. We recommend future studies use this protocol, or the principles underpinning it, to enable data sharing and comparison across different studies. CLINICAL RELEVANCE: This is a description and analysis of hip muscle strength measurement. If widely used, it will allow for accurate and objective strength assessment and closer monitoring of hip injuries and pathology.

Reducing the Hypertensive Effects of the Prolonged Surgical Tourniquet Using a Dual-Cuff Strategy: A Prospective Randomized Controlled Trial.

We evaluated whether moving the "line of crush" from thigh to the calf before onset of tourniquet-mediated hypertension would prevent or diminish it. We also evaluated any change in pain or functional outcome. Twenty adult patients were recruited and randomly assigned to either control or intervention groups. Inclusion criteria: any willing participant >18 years old with foot and/or ankle pathology requiring an operation lasting >90 minutes. Exclusion criteria included contraindication to general anesthesia, peripheral neuropathy affecting lower limbs of any etiology, or chronic pain requiring regular opiate analgesia. The intervention group received a thigh tourniquet for 60 minutes, after which a calf tourniquet was inflated and the thigh tourniquet was deflated. The control group received only a thigh tourniquet throughout surgery. At 90 minutes, the control group had mean arterial pressure of 86.8 mmHg, compared with the intervention group at 76.3 mmHg (p ≤ .014). At end of surgery, the difference had increased further (control 98.1 mmHg, intervention 78.3 mmHg (p ≤ .001). Moving the line of crush during limb tourniquet application prevents development of the hypertensive response. For cases in which a prolonged tourniquet application is required, a dual-tourniquet technique will prevent intraoperative hypertension and may influence long-term pain and function.

Open lower limb fractures in Major Trauma Centers - A loss leader?

PURPOSE: Open lower limb fractures are resource intensive injuries. Regardless of the financing model, the cost of treatment is an important consideration for any healthcare provider. METHODS: Open lower limb fractures treated at our centre were identified over a six-month period. Isolated open femur or tibia fractures were included as well as cases with multiple fractures. Direct inpatient care costs were calculated and income was reviewed for each case according to 'Healthcare Resource Group' (HRG) cost codes. RESULTS: A total of 41 open lower limb fractures (32 patients) were identified. There were isolated open fractures in twenty-five and multiple lower limb open fractures in seven patients. Twenty-three patients (72%) were male and nine were female (28%) with an average age of 40 years (range 10-89 years). The fractures were classified according to Gustilo and Anderson (GA) and divided into two main groups; there were 13 mild and 28 severe open fractures. The median direct cost of inpatient treatment for open lower limb fractures was £19,189 per patient. There was a net gain of £6,288 per fracture in the mild group and a loss of £7,582 in the severe group. The total deficit was £149,545 over the six-month period for this cohort of 41 fractures. CONCLUSION: Open lower limb fractures are expensive to treat at a cost of approximately £19,200 per patient and associated with a significant loss of income in our MTC. Cost codes should reflect the complex and more expensive treatment of these patients to avoid the inadvertent financial 'penalties' of treating such patients. This study is the first to calculate the direct inpatient treatment costs of open lower limb fractures in a major trauma centre. It highlights the need for cost saving strategies and for appropriate remuneration in MTCs.

Semimembranosus tenosynovitis: Diagnosis and management of a commonly missed cause of posteromedial knee pain.

BACKGROUND: In orthopedic and sports medicine literature there is minimal information regarding accurate diagnosis and the treatment options for tenosynovitis of the distal semimembranosus tendon. After reviewing the literature, the authors question both the etiology and treatment of this condition. Previous descriptions have associated the condition primarily with the endurance athlete but we have noted multiple cases in which this is a condition common to the 'sprinter' as well. There has been very little mention of this condition in recent literature but the most recent complete description of operative treatment for this condition recommends both tendon transfer and concomitant arthroscopy. We propose this condition is akin to De Quervain's tenosynovitis of the knee, with sensitive and specific signs on physical examination. METHODS: We describe a case series of six cases (five patients), that underwent open surgical release for semimembranosus tenosynovitis. The anatomy and the treatment options for the condition are also discussed. RESULTS: At a follow-up period of 18-64months, all cases showed improvement in the Tegner activity score following surgical release. CONCLUSION: Diagnostic confusion can be decreased with more modern diagnostic imaging modalities than those described in the literature. The authors outline an alternative operative approach significantly decreasing surgical complexity and therefore post-operative morbidity. What is known about this subject: This is a rare condition and the surgical treatment is seldom performed. What this study adds to existing knowledge: We describe the technique for surgical decompression and reveal positive results at medium term follow-up.

Isolated tuberculous osteomyelitis of the talonavicular joint without pulmonary involvement-a rare case report.

Tuberculosis is one of the leading causes of death worldwide amongst curable diseases. It is estimated that one-third of the world's population has been diagnosed with tuberculosis infection [1]. The prevalence is on the rise with an estimated 9.4 million new cases per year worldwide [1]. Tuberculosis most commonly presents with pulmonary involvement. However, approximately 23-30% of patients found to be infected with tuberculosis have extrapulmonary symptoms [2]. Of those, only 1-3% have been found to have osseous disease. Skeletal involvement with a primary focus of tuberculosis usually affects major weight-bearing joints such as the hip and knee. Tuberculosis infections of the foot and ankle are very rare, accounting for 1% of all tuberculosis infections [2-4]. Difficulties arise in the timing of diagnosis, patient compliance of therapy and awareness of the less obvious presenting symptoms. Musculoskeletal tuberculosis, although rare, can be a problem. Its uncommon site, non-specific presenting symptoms and its ability to mimic numerous disorders make it more difficult to formulate a definitive diagnosis and, in turn, leads to therapeutic delays [5-7]. It is for this reason that we report this case in an effort to promote awareness.