Ankle Sprain Return: What Actually Detrained Over Six Weeks
A 26-year-old male rugby forward (112 kg, back squat 1RM 185 kg, countermovement jump 58 cm, 10 m sprint 1.72 s) sustained a grade II lateral ankle sprain six weeks ago. Since week 2 he has lifted upper body twice weekly but has done no lower-body loading, plyometrics, or running. Swelling has resolved, but he reports morning stiffness, and knee-to-wall dorsiflexion is 6 cm on the injured side versus 10 cm on the uninjured side. He walks without a limp and has no resting pain. His coach wants to test a 1RM squat in the first session back and restart the pre-injury block at 85% intensity. A preseason friendly is three weeks away.
1. Which physical qualities are likely to have declined most and least over these six weeks, and why does that ordering matter for how you re-enter loading?
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The limb was unloaded but not immobilized, so the pattern is predictable:
- Least affected: maximal strength and muscle mass. Strength is retained relatively well over 4–8 weeks when the limb is unloaded rather than casted; a 185 kg squat will not have fallen to 140 kg.
- Moderately affected: single-leg strength and calf/posterior-chain capacity on the injured side, plus balance and proprioception (joint position sense and reactive stabilization are blunted after ligament injury).
- Most affected: rate of force development, reactive power, and sprint acceleration - qualities that depend on high-velocity, high-impact exposure. Expect the 58 cm countermovement jump and 1.72 s 10 m to be the slowest to recover and the most sensitive to residual deficits.
Practical implication: a max-strength test will look reassuringly normal and will not clear him, while the qualities that decide whether he re-injures the ankle are exactly the ones you cannot see on a 1RM. Re-entry should be sequenced strength → unilateral strength → hopping/landing → sprinting, with decisions made on asymmetry, not on the squat number.
2. What must be measured before any maximal lower-body testing, and what criteria would you require before removing restrictions?
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Measure first (session 1, no max effort):
- Weight-bearing dorsiflexion vs. the other side - currently a 4 cm deficit, which is a residual restriction, not a strength issue. Target ≤2 cm asymmetry.
- Single-leg heel-raise endurance and single-leg hop for distance, both sides; also a side-hop or triple-hop if pain-free.
- Pain provocation with hopping and with a deep squat, plus 24-hour response.
- Balance/star-reach asymmetry as a proprioception proxy.
Criteria before maximal loading: pain-free full-ROM squatting, dorsiflexion within 2 cm, hop symmetry ≥90% on two hop tests, heel-raise count within 10% of the other side, and no swelling or stiffness increase the day after a loading session. Until then, estimate strength from a 3–5RM or a submaximal load-velocity profile rather than a true 1RM.
A 1RM attempt in week 1 fails on two counts: the ankle cannot yet tolerate the dorsiflexion and shear of a near-maximal squat, and the result would not be interpretable as a baseline.
3. Sketch weeks 1–2 and explain how you would adjust the coach's plan to restart at 85%.
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Week 1 (two sessions, non-consecutive):
- Bilateral squat pattern at RPE 6–7, 3×5, depth limited to what is pain-free and symmetrical; unilateral split squat and step-down 2–3×8/side.
- Calf work: seated and standing 3×10–12, plus balance drills.
- Upper body as before. No plyometrics, no sprinting beyond a build-up warm-up.
- Re-test hop/heel-raise at the end of the week.
Week 2 (if criteria met):
- Squat 3×5 at ~70–75%, with one top set at 80% only if week 1 produced no 24-hour reaction.
- Introduce low-level plyometrics: pogo hops, snap-downs, lateral bounds - 2×5, low volume, high quality.
- Begin linear acceleration at 60–70% effort.
Adjusting the 85% restart: 85% of a stale 185 kg 1RM is a number derived from a quality that (a) has not been verified and (b) is not the limiting factor. Hold the block at 70–80% with full effort intent for two weeks, keep volume modest, and let the 3-week friendly be the first genuine high-intensity exposure. Preserve intensity relative to the load used - do not let the reduced percentage become reduced intent, or the power quality you actually need will keep sliding.