Aims. The evidence base within trauma and orthopaedics has traditionally favoured quantitative research methodologies. Qualitative research can provide unique insights which illuminate patient experiences and perceptions of care.
Introduction. Patient reported outcome measures (PROMs) are used to understand the impact of lower limb reconstruction on patient's quality of life (QOL). Existing measures have not been developed to specifically capture patient experiences amongst adults with lower limb conditions that require reconstruction surgery. This systematic review of qualitative studies (qualitative evidence synthesis) aimed to identify what is important to these patients. Materials and Methods. MEDLINE, Embase, PsychINFO and Cinahl were searched from inception until November 2020. Studies were included if they employed
INTRODUCTION. Important surgical requirements for optimal function are accurate bone cut alignments and soft tissue balancing. From an unbalanced state, balancing can be achieved by Surgical Corrections including soft tissue releases, bone cut modifications, and changing tibial insert thickness. Surgical balancing can now be quantified using an instrumented tibial trial, but the procedures and results need further investigation. Our major purpose was to determine the initial balancing after making the bone cuts, and the final accuracy of balancing after Surgical Corrections. A related purpose was to determine the number and effectiveness of different Corrections in achieving balancing. METHODS. During 101 surgeries of a PCL-retaining TKA, screen capture software recorded the video feed of surgery, angular data from the navigation system, and lateral and medial contact forces from the instrumented tibial trial. Initial bone cuts were made using navigation based on measured resection. The instrumented tibial trial measured the magnitudes and locations of the contact forces on the lateral and medial sides throughout flexion. The Heel Push Test (Walker 2014) determined the initial balancing, defined as a ratio of the medial/total force at 0, 30, 60 and 90 degrees flexion. A balanced knee with equal lateral and medial forces would show a value of 0.5. Surgical Corrections were then performed with the goal of achieving balancing. The most common Corrections were soft tissue releases (total 63 incidences), including MCL, postero-lateral corner, postero-medial corner; and increasing/decreasing tibial insert thicknesses (34 incidences). RESULTS. After the bone cuts and inserting the trials, the average medial/total force ratio was 0.49 +/− 0.27. After final balancing, the ratio was 0.52 +/− 0.14 (Figure 1). The initial data was scattered between 0.0 (lateral force only) and 1.0 (medial force only). The final data showed a clear narrowing of the range of imbalance. The different Surgical Corrections achieved an improvement of the medial/total ratio between 0.11–0.18. A 2mm insert increase increased the total force by 106 Newtons. A final medial/total ratio between 0.35–0.65 was achieved in 80% of cases from 0–30 degrees; 77% from 0–90 degrees. In 84% of the cases, 0–2 Corrections were required. The average total force on the condyles from 0–90 degrees was 290.5+/−166.8 Newtons initially and 215.3+/−86.3 Newtons after balancing, the large range due to patient variations in ligament stiffness. DISCUSSION. Acceptable balancing was achieved in the majority of cases with only 0–2 Surgical Corrections. The sensitivity of the balancing values to the Surgical Corrections was consistent with a previous study showing that changes of 2mm or 2 degrees could correct most imbalanced states (Walker 2014), related to collateral stiffness being in the region of 50N/mm (Wilson 2012, Robinson 2005). With only 2 Surgical Corrections needed in the majority of cases, no additional time was needed compared with
Introduction. The anterior cruciate ligament (ACL) is one of the most common ligament injuries. Several ACL reconstructions exist and are consequently performed. An accurate and comprehensive description of knee motion is essential for an adequate assessment of these surgeries, in terms of restoring knee motion. Methods. We propose to compare these reconstructions thanks to an index of articular coherence. This index measures the instantaneous state surface configurations during a motion. More specifically, this refers to the position between two articular surfaces facing each other. First of all, the index has to refer to a position known to be physiological. This initial position of the bones, named reference, directly results from the segmentation of CT scans. First we compute all distances between the two surfaces and then we compute the Cumulative Distribution Function (CDF). We process this way for each iteration of the motion. Then we obtain a batch of CDF curves which provide us qualitative information relative to the motion such as potential collisions or dislocations. The graph of all CDF curves is called Figure of Articular Coherence (FoAC). A good articular coherence is characterised by CDF which are close to the reference. This
COVID-19 has compounded a growing waiting list problem, with over 4.5 million patients now waiting for planned elective care in the UK. Views of patients on waiting lists are rarely considered in prioritization. Our primary aim was to understand how to support patients on waiting lists by hearing their experiences, concerns, and expectations. The secondary aim was to capture objective change in disability and coping mechanisms. A minimum representative sample of 824 patients was required for quantitative analysis to provide a 3% margin of error. Sampling was stratified by body region (upper/lower limb, spine) and duration on the waiting list. Questionnaires were sent to a random sample of elective orthopaedic waiting list patients with their planned intervention paused due to COVID-19. Analyzed parameters included baseline health, change in physical/mental health status, challenges and coping strategies, preferences/concerns regarding treatment, and objective quality of life (EuroQol five-dimension questionnaire (EQ-5D), Generalized Anxiety Disorder 2-item scale (GAD-2)). Qualitative analysis was performed via the Normalization Process Theory.Aims
Methods