A physiotherapy dissertation literature review does one job a generic literature review does not: it has to grade the quality of the clinical evidence it cites, not just summarise what each study found. A physiotherapy examiner reads your review chapter checking whether you can tell a well-designed randomised trial apart from a weak, unblinded one — because that judgement is exactly what you will need in clinical practice. This guide walks through search, screening, critical appraisal and synthesis specifically for a BPT, MPT or M.Phil physiotherapy dissertation, with a worked synthesis example.
This is the field-scoped version of the review-writing skill; the general search-string, screening and synthesis-matrix process for a PhD-level review across any discipline is in our guide to writing a literature review for a PhD thesis in India. What follows adds the piece that discipline generically cannot: how a physiotherapy review actually grades evidence.
Step 1: Know the evidence hierarchy your review has to respect
Physiotherapy literature reviews are built on an evidence hierarchy most methodology courses teach explicitly: systematic reviews and meta-analyses of randomised controlled trials sit above individual RCTs, which sit above cohort and case-control studies, which sit above case series and expert opinion. Your review does not just describe what each study found; it weighs that finding by where the study sits on this hierarchy. A single well-designed RCT and a poorly controlled case series reporting the opposite result are not equally weighted evidence, and treating them as if they were is the single most common structural fault in a physiotherapy dissertation’s review chapter.
Step 2: Search the databases physiotherapy research actually lives in
PubMed/MEDLINE is the general biomedical starting point, but two further databases carry weight specifically for physiotherapy:
- PEDro (the Physiotherapy Evidence Database), maintained by the University of Sydney’s Institute for Musculoskeletal Health, indexes physiotherapy-relevant randomised trials, systematic reviews and clinical practice guidelines, and — critically for your appraisal step below — many of its trial records already carry a PEDro methodological-quality score you can cite directly.
- Cochrane Library, for systematic reviews at the top of the evidence hierarchy, particularly its Cochrane Rehabilitation and musculoskeletal, neurological and cardiorespiratory review groups.
- CINAHL, where your institution licenses it, for allied-health and nursing-adjacent literature that PubMed indexes less completely.
A worked Boolean search string for a low back pain and manual therapy topic: ("low back pain" OR "lumbar pain") AND ("manual therapy" OR "spinal manipulation" OR "mobilisation") AND ("randomised controlled trial" OR RCT). Run the same string across PubMed, PEDro and Cochrane, record the date of each search and the number of hits, and keep the search log — an examiner may ask how the search was actually run, and “I searched Google Scholar” is not a defensible answer for a clinical review.
Step 3: Screen with explicit inclusion and exclusion criteria
State your criteria before screening begins, not after: population (the condition and any age or severity restriction), intervention (the specific technique or programme), comparator where relevant, outcome measures, and study design (commonly restricting to RCTs and systematic reviews for an intervention-effectiveness question, or including cohort studies where the question is prognostic rather than about treatment effect). Even a narrative review benefits from a simple flow count — records identified, records screened, records excluded with reasons, studies included — because it is the fastest way to show an examiner your selection was systematic rather than convenient.
Step 4: Appraise quality with the PEDro scale
The PEDro scale is an 11-item tool for grading the methodological quality of a clinical trial, maintained by the University of Sydney’s Institute for Musculoskeletal Health. Item 1 (eligibility criteria specified) is reported but not scored; the remaining ten items — random allocation, concealed allocation, baseline comparability, blinding of subjects, blinding of therapists, blinding of assessors, over-85%-follow-up, intention-to-treat analysis, between-group statistical comparison, and point-plus-variability measures reported — each contribute one point, for a score out of 10.
Many trials indexed in PEDro already carry a published PEDro score, which you can cite directly rather than re-scoring the trial yourself; where a trial is not in PEDro, scoring it yourself against the same ten criteria is standard practice, and stating who did the scoring (you alone, or you plus a second rater with an agreement check) is worth including in your methods section for the review chapter.
Step 5: Organise the review by intervention or outcome, not by author
The same rule that applies to any discipline’s review applies here with extra force: organise by what the studies are about (the intervention, the outcome, the population subgroup), never as a list of “Author (year) found X; Author (year) found Y.” A physiotherapy review commonly organises around technique families — manual therapy versus exercise therapy versus electrotherapy modalities for the same condition — or around outcome domains (pain, function, quality of life) if the intervention itself is fixed and the question is which outcome it affects most.
Step 6: A worked synthesis paragraph
Below is a specimen synthesis paragraph in the register a physiotherapy review chapter needs, showing evidence-weighting language in practice. No real study is characterised; author names are placeholders.
Manual therapy combined with exercise has been compared against exercise alone for chronic non-specific low back pain in several trials of varying methodological quality. [Author, year], a high-quality trial (PEDro 8/10) with concealed allocation and blinded assessors, found a statistically significant but modest reduction in pain intensity favouring the combined intervention at 12 weeks. [Author, year], a lower-quality trial (PEDro 4/10) lacking assessor blinding and reporting per-protocol rather than intention-to-treat analysis, reported a larger effect, which its own limitations make difficult to weigh against the better-controlled trial. A systematic review by [Author, year] pooling six RCTs found a small-to-moderate pooled effect size favouring combined treatment, consistent with the higher-quality individual trial rather than the lower-quality one. Taken together, the evidence supports a modest benefit for combined manual therapy and exercise over exercise alone, with the strength of that claim resting on the higher-quality trials rather than the full unweighted set of findings.
Notice what carries the argument: the PEDro scores are named inline, the lower-quality trial’s larger effect is explicitly discounted rather than averaged in as if it were equally trustworthy, and the systematic review’s pooled estimate is used to adjudicate between the two conflicting individual trials. That is the register a physiotherapy review chapter is expected to write in throughout, not only in one example paragraph.
Step 7: State the gap your dissertation actually fills
Close the review with a paragraph naming precisely what the appraised literature has not yet established for your population, setting or outcome — not a generic “more research is needed” line. If the manual-therapy-plus-exercise trials above were all conducted outside India, on working-age adults, in tertiary hospital settings, your gap sentence names exactly that: no trial of this combination has been conducted among a named Indian population in a named setting, which is precisely the study your methodology chapter is about to propose.
Five faults that weaken a physiotherapy review chapter
- No quality appraisal at all. Summarising ten trials without ever weighing which are more trustworthy reads as a list, not a review.
- Treating every finding as equally weighted. A PEDro 3/10 trial and a PEDro 9/10 trial reporting opposite results are not a “mixed evidence” wash; state which one the field should trust more, and why.
- Organising by author instead of by intervention or outcome. The commonest structural fault across every discipline’s reviews, and physiotherapy is no exception.
- Citing a review’s abstract without reading the full trial. An abstract can misstate or oversimplify a trial’s actual finding; read the full text of any trial your synthesis paragraph leans on.
- A generic gap statement. “Further research is needed” with no population, setting or outcome named does not earn the dissertation that follows it.
Once your gap is stated precisely, the outcome-measure scale your own study will use to close that gap is compared in our guide to which outcome-measure scale for a physiotherapy dissertation, and the population-and-sample paragraph that follows the gap statement is worked through in our guide to population and sample, with the paragraph you have to write.
How the review chapter feeds the methodology chapter
The gap statement at the end of your review is not just a closing paragraph; it is the sentence your methodology chapter’s opening has to answer directly. If your review concludes that no trial has tested a combined intervention among a named Indian population, your methodology chapter’s first paragraph should say, in effect, “this study addresses that gap by testing exactly that, in exactly that population.” Where the rest of your methodology chapter is built out — design, population and sample, tools, procedure — is set out in full in our written-out methodology chapter example, which the review chapter above should read as a direct hand-off into.
Frequently asked questions
Do I need to PEDro-score every single study in my review?
At minimum, score or cite the published score for every intervention-effectiveness trial your synthesis paragraphs actually weigh against each other. Background or contextual references (prevalence figures, anatomy, general condition descriptions) do not need a methodological quality score.
Is a systematic review or a narrative review expected for a BPT/MPT dissertation?
Most undergraduate and master’s physiotherapy dissertations in India use a narrative or scoping review to set up an original primary study, rather than a full systematic review as the dissertation’s own contribution. Confirm which your department expects, since the two differ in required rigour and reporting (a true systematic review typically follows PRISMA reporting in full).
Can I use PEDro scores that the database itself has already calculated?
Yes, and it is standard practice to cite the database’s own published score for a trial rather than re-scoring it, provided you state that you used PEDro’s published score rather than scoring it yourself.
What if a trial relevant to my topic is not indexed in PEDro?
Score it yourself against the same ten criteria and state clearly in your methods that this is an investigator-applied score rather than a PEDro-published one; a second rater and an agreement check strengthen this considerably if your timeline allows it.
How many studies should a physiotherapy dissertation’s review chapter include?
There is no fixed number; it depends on how much directly relevant literature exists for your specific condition, intervention and population. Ten to twenty-five closely relevant, well-appraised studies is a more defensible review than fifty loosely related ones with no quality weighting applied.
Should case reports and case series be included?
Only where higher-quality evidence (RCTs, cohort studies) is genuinely scarce for your specific question, and where included, they should be clearly labelled as lower-tier evidence in the hierarchy rather than blended in as equivalent to trial-level findings.
Do I need to include studies that found no effect, not just positive findings?
Yes. Omitting null or negative findings misrepresents the evidence base and is exactly the kind of selective citation an examiner familiar with the literature will notice; a review that only cites supportive studies reads as an argument, not a review.
Write your review chapter with the appraisal built in
The hardest part of this chapter is not finding studies, it is holding the quality-weighting discipline consistently across every paragraph. Tesify structures your review by intervention or outcome domain and keeps the appraisal language — PEDro scores, evidence-hierarchy position — attached to each study as you write, so the synthesis stays disciplined from the first paragraph to the last.